Pub Date : 2023-10-27DOI: 10.1080/10584587.2023.2234605
Aekasit Suthapintu, Aurawan Rittidech
AbstractThe composite ceramics between Al2O3 (6 mol%MgO) and ZrO2 (4 mol%Y2O3) were prepared in the Al2O3 (6 mol%MgO added: ZrO2 (4 mol%Y2O3 added) ratios of 20:80, 35:65, 50:50, 65:35 and 80:20. All of samples were sintered using two stage sintering routes with the first temperature (T1) at 1600 °C for 30 min and the second temperature (T2) at 1450 °C for 5 h. The physical properties were characterized from percentage of shrinkage and bulk density. It can be found their tend to decrease with Al2O3 (6 mol%MgO) content increase. XRD patterns were showed combination main phase of rhombohedral of Al2O3 and monoclinic, cubic, tetragonal of ZrO2. Rietveld refinement were used to calculate the percentage of phase composition. All of samples were revealed weight percentage of main composition as m-ZrO2 c-ZrO2 t-ZrO2 and r- Al2O3 in different ratios. It can be found, sample with more content of ZrO2 was showed higher weight percentage of c-ZrO2. The high intensity of Al2O3 peak was appeared from sample with high Al2O3 concentration. SEM micrographs reveal morphology of grain such as grain shape and size of grains. The average grain size value is between 0.81 and 1.07 µm and the size of grain tend to increase with high Al2O3 content. EDX technique were analyzed element compositions of Al2O3 (6 mol%MgO): ZrO2 (4 mol%Y2O3) and EDX spectra were showed wt.% element of Al, Zr, O Y and Mg which is confirmed molecular formular. Moreover, EDX method is identified square shape of Al2O3 (6 mol%MgO) and round shape of ZrO2 (4 mol%Y2O3). The mechanical properties were measured by Vickers and Knoop hardness that were used for calculating the fracture toughness value. It can be found that the optimum mechanical properties were obtained from composite ceramic of 0.35Al2O3 (6 mol%MgO): 0.65ZrO2 (4 mol%Y2O3) which is showed the highest of fracture toughness value about 0.38 GPa.m1/2.Keywords: ZrO2Y2O3MgOAl2O3mechanical propertiesRietveld refinement Disclosure StatementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis research project was financially supported by Thailand Science Research and Innovation (TSRI) and Mahasarakham University, Thailand.
{"title":"Preparation and Characterization of Alumina Zirconia Composite Ceramics","authors":"Aekasit Suthapintu, Aurawan Rittidech","doi":"10.1080/10584587.2023.2234605","DOIUrl":"https://doi.org/10.1080/10584587.2023.2234605","url":null,"abstract":"AbstractThe composite ceramics between Al2O3 (6 mol%MgO) and ZrO2 (4 mol%Y2O3) were prepared in the Al2O3 (6 mol%MgO added: ZrO2 (4 mol%Y2O3 added) ratios of 20:80, 35:65, 50:50, 65:35 and 80:20. All of samples were sintered using two stage sintering routes with the first temperature (T1) at 1600 °C for 30 min and the second temperature (T2) at 1450 °C for 5 h. The physical properties were characterized from percentage of shrinkage and bulk density. It can be found their tend to decrease with Al2O3 (6 mol%MgO) content increase. XRD patterns were showed combination main phase of rhombohedral of Al2O3 and monoclinic, cubic, tetragonal of ZrO2. Rietveld refinement were used to calculate the percentage of phase composition. All of samples were revealed weight percentage of main composition as m-ZrO2 c-ZrO2 t-ZrO2 and r- Al2O3 in different ratios. It can be found, sample with more content of ZrO2 was showed higher weight percentage of c-ZrO2. The high intensity of Al2O3 peak was appeared from sample with high Al2O3 concentration. SEM micrographs reveal morphology of grain such as grain shape and size of grains. The average grain size value is between 0.81 and 1.07 µm and the size of grain tend to increase with high Al2O3 content. EDX technique were analyzed element compositions of Al2O3 (6 mol%MgO): ZrO2 (4 mol%Y2O3) and EDX spectra were showed wt.% element of Al, Zr, O Y and Mg which is confirmed molecular formular. Moreover, EDX method is identified square shape of Al2O3 (6 mol%MgO) and round shape of ZrO2 (4 mol%Y2O3). The mechanical properties were measured by Vickers and Knoop hardness that were used for calculating the fracture toughness value. It can be found that the optimum mechanical properties were obtained from composite ceramic of 0.35Al2O3 (6 mol%MgO): 0.65ZrO2 (4 mol%Y2O3) which is showed the highest of fracture toughness value about 0.38 GPa.m1/2.Keywords: ZrO2Y2O3MgOAl2O3mechanical propertiesRietveld refinement Disclosure StatementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis research project was financially supported by Thailand Science Research and Innovation (TSRI) and Mahasarakham University, Thailand.","PeriodicalId":13686,"journal":{"name":"Integrated Ferroelectrics","volume":"123 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136263402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
AbstractThe intermediate-dimensional hybrid mixed-organic perovskite active layers PEA2(CH3NH3)n−1(PbI2)n and Dodec2(CH3NH3)n−1(PbI2)n with various n values were successfully fabricated. Their characteristics were compared to find out a promising candidate for solar cell applications. The appropriate layer thickness of the films was tuned by a variation of n values based on stoichiometry. The physical appearance, crystal structure, surface morphology, chemical bonding, optical properties, stability to the heat and humidity, and power conversion efficiency of all films were examined thoroughly to determine their potential. For low n values of both film types, they showed the quasi-2D characteristic improving the film stability and conversion efficiency. The absorption edge of both types of materials shifted to a higher energy side and the electronic band gap increased with the decrease of n values. The mixed phase and MAPbI3 perovskite diffraction peaks were still observable even after time has passed for 72 h. Under the 60% humidity condition, the PEA-doped MAPbI3 films decomposed slower than the Dodec-doped MAPbI3 films.Keywords: PerovskiteMAPbI3hybridPEADodec Disclosure StatementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was financially supported by Silpakorn University Research, Innovation and Creative Fund (Fiscal Year 2018).
{"title":"Comparative Properties Investigations of Organic Doped Hybrid-Perovskite Solar Cells","authors":"Natthapong Wongdamnern, Sakchai Laksee, Thanapong Sareein, Cheewita Suwanchawalit, Nutchapon Chotigkrai, Supakij Suttiruengwong, Narit Triamnak","doi":"10.1080/10584587.2023.2234602","DOIUrl":"https://doi.org/10.1080/10584587.2023.2234602","url":null,"abstract":"AbstractThe intermediate-dimensional hybrid mixed-organic perovskite active layers PEA2(CH3NH3)n−1(PbI2)n and Dodec2(CH3NH3)n−1(PbI2)n with various n values were successfully fabricated. Their characteristics were compared to find out a promising candidate for solar cell applications. The appropriate layer thickness of the films was tuned by a variation of n values based on stoichiometry. The physical appearance, crystal structure, surface morphology, chemical bonding, optical properties, stability to the heat and humidity, and power conversion efficiency of all films were examined thoroughly to determine their potential. For low n values of both film types, they showed the quasi-2D characteristic improving the film stability and conversion efficiency. The absorption edge of both types of materials shifted to a higher energy side and the electronic band gap increased with the decrease of n values. The mixed phase and MAPbI3 perovskite diffraction peaks were still observable even after time has passed for 72 h. Under the 60% humidity condition, the PEA-doped MAPbI3 films decomposed slower than the Dodec-doped MAPbI3 films.Keywords: PerovskiteMAPbI3hybridPEADodec Disclosure StatementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was financially supported by Silpakorn University Research, Innovation and Creative Fund (Fiscal Year 2018).","PeriodicalId":13686,"journal":{"name":"Integrated Ferroelectrics","volume":"237 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136261498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
AbstractLead-free 0.85Bi0.5Na0.475Li0.025TiO3-0.11Bi0.5K0.5TiO3-0.04BaTiO3 (BNBKL) ceramics were prepared by the solid-state combustion technique. The BNBKL powders and ceramics were calcined and sintered between 650 to 850 °C for 1–5 h and 1100 to 1140 °C for 2 h, respectively. The effect of firing temperatures on the phase structure, microstructure, and electrical properties of BNBKL ceramics was investigated. X-ray diffraction patterns of BNBKL powders showed a pure perovskite phase structure at a calcination temperature of 800 °C for 3 h. The BNBKL ceramics sintered at different temperatures possessed coexisting rhombohedral (R) and tetragonal (T) phases. The ceramic grains showed a polyhedral shape with directionless growth. The average grain size of the BNBKL ceramics increased from 0.80 to 1.26 µm when the sintering temperature increased from 1100 to 1140 °C. The density of the BNBKL ceramics increased as the sintering temperature increased up to 1120 °C, after that it decreased. The highest density (6.05 g/cm3) and dielectric constant (5855), were obtained at the sintering temperature of 1120 °C. As the sintering temperature increased, the polarization hysteresis loops (P-E loops) of the BNBKL ceramics exhibited less saturation and were more pinched, indicating more relaxor behavior.Keywords: BNBKLsolid-state combustiondielectric and ferroelectric AcknowledgmentsThe authors thank the Department of Physics, Faculty of Science, Naresuan University for their supporting facilities. Thanks are also given to Asst. Prof. Dr. Kyle V. Lopin for his help in editing the manuscript.Disclosure StatementNo potential conflict of interest was reported by the author(s).
{"title":"Firing Temperatures Effect on Phase Formation, Microstructure and Electrical Properties of BNBKL Ceramics Fabricated via the Solid-State Combustion Technique","authors":"Metarsit Klinbanmor, Naratip Vittayakorn, Aurawan Rittidech, Theerachai Bongkarn","doi":"10.1080/10584587.2023.2234603","DOIUrl":"https://doi.org/10.1080/10584587.2023.2234603","url":null,"abstract":"AbstractLead-free 0.85Bi0.5Na0.475Li0.025TiO3-0.11Bi0.5K0.5TiO3-0.04BaTiO3 (BNBKL) ceramics were prepared by the solid-state combustion technique. The BNBKL powders and ceramics were calcined and sintered between 650 to 850 °C for 1–5 h and 1100 to 1140 °C for 2 h, respectively. The effect of firing temperatures on the phase structure, microstructure, and electrical properties of BNBKL ceramics was investigated. X-ray diffraction patterns of BNBKL powders showed a pure perovskite phase structure at a calcination temperature of 800 °C for 3 h. The BNBKL ceramics sintered at different temperatures possessed coexisting rhombohedral (R) and tetragonal (T) phases. The ceramic grains showed a polyhedral shape with directionless growth. The average grain size of the BNBKL ceramics increased from 0.80 to 1.26 µm when the sintering temperature increased from 1100 to 1140 °C. The density of the BNBKL ceramics increased as the sintering temperature increased up to 1120 °C, after that it decreased. The highest density (6.05 g/cm3) and dielectric constant (5855), were obtained at the sintering temperature of 1120 °C. As the sintering temperature increased, the polarization hysteresis loops (P-E loops) of the BNBKL ceramics exhibited less saturation and were more pinched, indicating more relaxor behavior.Keywords: BNBKLsolid-state combustiondielectric and ferroelectric AcknowledgmentsThe authors thank the Department of Physics, Faculty of Science, Naresuan University for their supporting facilities. Thanks are also given to Asst. Prof. Dr. Kyle V. Lopin for his help in editing the manuscript.Disclosure StatementNo potential conflict of interest was reported by the author(s).","PeriodicalId":13686,"journal":{"name":"Integrated Ferroelectrics","volume":"8 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136262157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-27DOI: 10.1080/10584587.2023.2234621
Donna Helen Rajagukguk, Juniastel Rajagukguk, Rita Juliani, Chayani Sarumaha, Jakrapong Kaewkhao
AbstractThe borophosphate glasses compositions based on (64-x)P2O5-5B2O3-15ZnO-15Li2O-xX-1Sm2O3 (x = 0 & 15; X = CaF2) are prepared by melting and quenched technique. The optical and photoluminescence were obtained from the UV-Vis-NIR spectrophotometer and spectrofluorophotometer. The ground state 6H5/2 as the start transition in the absorption spectrum and the Judd-Ofelt intensity parameters (Ω2, Ω4, and Ω6) were determined. The emission spectra of borophosphate glass with CaF2 were recorded at an excitation of 401 nm which gave four peaks namely 6H5/2, 6H7/2, 6H9/2, and 6H11/2. The results of radiative properties for the 4G5/2 → 6H7/2 transition were found to be higher in the zinc borophosphate glass without fluoride. Based on these results, zinc borophosphate glass can be used as a candidate for the orange laser application.Keywords: Zinc borophosphateabsorptionphotouminescenceradiative AcknowledgmentsThe authors would like to thank the Directorate general of higher education, Ministry of Education, Culture, Research and Technology of the Republic of Indonesia for the funding grand Penelitian Tesis Magister No. 124/E5/PG.02.00.PT/2022.Disclosure StatementNo potential conflict of interest was reported by the author(s).
{"title":"Influence of Calcium Fluoride on the Radiative Properties of Sm <sup>3+</sup> Doped Zinc Borophosphate Glasses","authors":"Donna Helen Rajagukguk, Juniastel Rajagukguk, Rita Juliani, Chayani Sarumaha, Jakrapong Kaewkhao","doi":"10.1080/10584587.2023.2234621","DOIUrl":"https://doi.org/10.1080/10584587.2023.2234621","url":null,"abstract":"AbstractThe borophosphate glasses compositions based on (64-x)P2O5-5B2O3-15ZnO-15Li2O-xX-1Sm2O3 (x = 0 & 15; X = CaF2) are prepared by melting and quenched technique. The optical and photoluminescence were obtained from the UV-Vis-NIR spectrophotometer and spectrofluorophotometer. The ground state 6H5/2 as the start transition in the absorption spectrum and the Judd-Ofelt intensity parameters (Ω2, Ω4, and Ω6) were determined. The emission spectra of borophosphate glass with CaF2 were recorded at an excitation of 401 nm which gave four peaks namely 6H5/2, 6H7/2, 6H9/2, and 6H11/2. The results of radiative properties for the 4G5/2 → 6H7/2 transition were found to be higher in the zinc borophosphate glass without fluoride. Based on these results, zinc borophosphate glass can be used as a candidate for the orange laser application.Keywords: Zinc borophosphateabsorptionphotouminescenceradiative AcknowledgmentsThe authors would like to thank the Directorate general of higher education, Ministry of Education, Culture, Research and Technology of the Republic of Indonesia for the funding grand Penelitian Tesis Magister No. 124/E5/PG.02.00.PT/2022.Disclosure StatementNo potential conflict of interest was reported by the author(s).","PeriodicalId":13686,"journal":{"name":"Integrated Ferroelectrics","volume":"13 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136262520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
AbstractThis study reports on the synthesis and characterizations of copper cadmium sulfide (CuCdS) thin films prepared using the vacuum thermal evaporation technique with copper sulfide and CdS as precursors in a 1:1 molar ratio. The structural properties of the thin films were analyzed using X-ray diffraction (XRD) which revealed that the main composition of the thin film was CdS with the preferred orientation of the (101) plane. The optical properties were examined using UV–Vis spectrophotometry. The photosensitivity of the films was determined using I–V measurements performed with a two-probe technique. The prepared CuCdS thin films have high optical transmittance of 92%.Keywords: CuCdSthermal evaporation techniqueoptical propertiesthin film AcknowledgmentsM. Hankoy would like to thank and appreciate Assoc. Prof. Dr. Thitinai Gaewdang and Assoc. Prof. Ngamnit Wongcharoen for imparting not only tremendous scientific knowledge but also genuine care and affection to the author.Disclosure StatementNo potential conflict of interest was reported by the author(s).
{"title":"Optical Properties of CuCdS Thin Film Prepared by Vacuum Thermal Evaporation Technique","authors":"Montree Hankoy, Paramapat Treetornkeerati, Natasia Fungfuang, S. Tipawan Khlayboonme, Mettaya Kitiwan, Phacharaphon Tunthawiroon","doi":"10.1080/10584587.2023.2234609","DOIUrl":"https://doi.org/10.1080/10584587.2023.2234609","url":null,"abstract":"AbstractThis study reports on the synthesis and characterizations of copper cadmium sulfide (CuCdS) thin films prepared using the vacuum thermal evaporation technique with copper sulfide and CdS as precursors in a 1:1 molar ratio. The structural properties of the thin films were analyzed using X-ray diffraction (XRD) which revealed that the main composition of the thin film was CdS with the preferred orientation of the (101) plane. The optical properties were examined using UV–Vis spectrophotometry. The photosensitivity of the films was determined using I–V measurements performed with a two-probe technique. The prepared CuCdS thin films have high optical transmittance of 92%.Keywords: CuCdSthermal evaporation techniqueoptical propertiesthin film AcknowledgmentsM. Hankoy would like to thank and appreciate Assoc. Prof. Dr. Thitinai Gaewdang and Assoc. Prof. Ngamnit Wongcharoen for imparting not only tremendous scientific knowledge but also genuine care and affection to the author.Disclosure StatementNo potential conflict of interest was reported by the author(s).","PeriodicalId":13686,"journal":{"name":"Integrated Ferroelectrics","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136262701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-27DOI: 10.1080/10584587.2023.2234620
C.S. Sarumaha, J. Rajagukguk, N. Chanthima, R. Rajaramakrishna, J. Kaewkhao
Abstract One mol% of europium (Eu3+) with the addition of potassium fluoride in Li2O-AlF3-NaF-P2O5 glass has been prepared using a melt-quenching technique. The fluorescence properties of present glasses were studied by the physical properties, FTIR (Fourier transform infrared spectroscopy), absorption spectra, photoluminescence properties, radiative properties and photometric analysis. The physical properties were measured to know the compactness of the glasses. The structural behavior of groups PO4 and OH of the glasses was discussed through the FTIR spectra. From the FTIR spectra, the OH group of adding KF into the glass showed a low %T intensity due to the hydroxyl group that was consumed by the fluoride content, which confirms the low phonon energy. Using absorption spectra and Judd–Ofelt’s (J–O) theory, the J–O intensity parameters (Ω2, Ω4, and Ω6) and radiative emission properties of excited states of Eu3+ ions are calculated to confirm potential laser applications. Photoluminescence properties generated excitation, emission, and lifetime for the glasses. It is observed that the enhancement of the Eu3+ emission at 613 nm is because of the addition of potassium fluoride. It proved the lifetime associated with the transition from the 5D0 state to be a single exponential. The CIE (Commission International de I’Eclairage) chromaticity diagram estimated the CIE color coordinates and color purity of the prepared glasses. The UV lamp under wavelength at 365 nm achieved reddish-orange emissions, which is suitable for reddish-orange laser applications.
{"title":"Improvement of Luminescence Performance by the Addition of KF in the Eu <sub>2</sub> O <sub>3</sub> Doped Li <sub>2</sub> O-AlF <sub>3</sub> -NaF-P <sub>2</sub> O <sub>5</sub> Glass for Highly Efficient Reddish-Orange Laser Application","authors":"C.S. Sarumaha, J. Rajagukguk, N. Chanthima, R. Rajaramakrishna, J. Kaewkhao","doi":"10.1080/10584587.2023.2234620","DOIUrl":"https://doi.org/10.1080/10584587.2023.2234620","url":null,"abstract":"Abstract One mol% of europium (Eu3+) with the addition of potassium fluoride in Li2O-AlF3-NaF-P2O5 glass has been prepared using a melt-quenching technique. The fluorescence properties of present glasses were studied by the physical properties, FTIR (Fourier transform infrared spectroscopy), absorption spectra, photoluminescence properties, radiative properties and photometric analysis. The physical properties were measured to know the compactness of the glasses. The structural behavior of groups PO4 and OH of the glasses was discussed through the FTIR spectra. From the FTIR spectra, the OH group of adding KF into the glass showed a low %T intensity due to the hydroxyl group that was consumed by the fluoride content, which confirms the low phonon energy. Using absorption spectra and Judd–Ofelt’s (J–O) theory, the J–O intensity parameters (Ω2, Ω4, and Ω6) and radiative emission properties of excited states of Eu3+ ions are calculated to confirm potential laser applications. Photoluminescence properties generated excitation, emission, and lifetime for the glasses. It is observed that the enhancement of the Eu3+ emission at 613 nm is because of the addition of potassium fluoride. It proved the lifetime associated with the transition from the 5D0 state to be a single exponential. The CIE (Commission International de I’Eclairage) chromaticity diagram estimated the CIE color coordinates and color purity of the prepared glasses. The UV lamp under wavelength at 365 nm achieved reddish-orange emissions, which is suitable for reddish-orange laser applications.","PeriodicalId":13686,"journal":{"name":"Integrated Ferroelectrics","volume":"3 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136318953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-27DOI: 10.1080/10584587.2023.2234616
N. Luewarasirikul, S. Sarachai, J. Rajagukguk, J. Kaewkhao
Abstract In this work, Eu3+-doped barium sodium borate oxide and oxyfluoride glasses were fabricated by melt-quenching technique for investigated their physical, optical, photoluminescence and radiative properties. The emission spectra, observed under the 394 nm, show the emission band corresponding to the transitions of 5D0→7F1 (590 nm), 7F2 (613 nm), 7F3 (652 nm) and 7F4 (701 nm). The most intense emission band is the 5D0→7F2 transition at 613 nm. The emission light is shown the reddish-orange color according to the framework of CIE 1931 color space. The Judd-Ofelt analysis confirmed the potential for using the glass samples in this work for use as photonic applications. The results from the emission spectra and radiative properties show that the oxyfluoride glass sample has more lasing potential than the oxide glass sample.
{"title":"Development of Eu <sup>3+</sup> -Doped Oxyfluoride Glass for Active Laser Medium","authors":"N. Luewarasirikul, S. Sarachai, J. Rajagukguk, J. Kaewkhao","doi":"10.1080/10584587.2023.2234616","DOIUrl":"https://doi.org/10.1080/10584587.2023.2234616","url":null,"abstract":"Abstract In this work, Eu3+-doped barium sodium borate oxide and oxyfluoride glasses were fabricated by melt-quenching technique for investigated their physical, optical, photoluminescence and radiative properties. The emission spectra, observed under the 394 nm, show the emission band corresponding to the transitions of 5D0→7F1 (590 nm), 7F2 (613 nm), 7F3 (652 nm) and 7F4 (701 nm). The most intense emission band is the 5D0→7F2 transition at 613 nm. The emission light is shown the reddish-orange color according to the framework of CIE 1931 color space. The Judd-Ofelt analysis confirmed the potential for using the glass samples in this work for use as photonic applications. The results from the emission spectra and radiative properties show that the oxyfluoride glass sample has more lasing potential than the oxide glass sample.","PeriodicalId":13686,"journal":{"name":"Integrated Ferroelectrics","volume":"8 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136316435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract The purpose of this research is to examine the effect of strontium aluminate (SrAl2O4) in copper samples on phosphorescence and tarnish resistance properties. The samples were fabricated by powder metallurgy using the compression moulding technique and then sintered in argon atmosphere. Phosphorescence, hardness, microstructure and tarnish resistance were studied. In the process of the compression moulding, the samples contain 100, 90, 80 and 70 percent of copper powder, by weight, with the addition of 0, 10, 20 and 30 percent of strontium aluminate, by weight, respectively. Polyvinyl alcohol (PVA) was used as a binder and mixed with copper and strontium aluminate powder to produce the green specimens using a hydraulic machine. Then, the green samples were sintered at 900 °C for one hour. After sintering, PVA was eliminated and the samples became denser. It was found that the hardness of the sample without strontium aluminate (30.5 HV) is higher than that of the sample with 10% of strontium aluminate addition (12.84 HV). Furthermore, copper samples containing strontium aluminate were fluorescent under ultraviolet at 517 nm. The sample with the largest amount of strontium aluminate (70Cu-30SrAl2O4) has higher phosphorescence than 90Cu-10SrAl2O4. In sulphur atmosphere, the tarnish resistance was found to be improved when strontium aluminate was added into copper. The colour difference (DE*) of 100Cu, which has no strontium aluminate, was 6.42 and higher than that of 90Cu-10SrAl2O4 (DE*= 3.5), 80Cu-20SrAl2O4 (DE*= 1.37), and 70Cu-30SrAl2O4 (DE*= 0.49), when testing in sulphur atmosphere for 30 min. 70Cu-30SrAl2O4, containing the highest amount of strontium aluminate, has the least colour changing on its surface resulting in the resistance in tarnishing.
{"title":"Phosphorescence and Tarnish Resistance Properties of Copper with Strontium Aluminate Addition","authors":"Hassawat Kankaew, Ratchanon Kaewpanma, Supinya Wongsriruksa, Nutthita Chuankrerkkul","doi":"10.1080/10584587.2023.2234608","DOIUrl":"https://doi.org/10.1080/10584587.2023.2234608","url":null,"abstract":"Abstract The purpose of this research is to examine the effect of strontium aluminate (SrAl2O4) in copper samples on phosphorescence and tarnish resistance properties. The samples were fabricated by powder metallurgy using the compression moulding technique and then sintered in argon atmosphere. Phosphorescence, hardness, microstructure and tarnish resistance were studied. In the process of the compression moulding, the samples contain 100, 90, 80 and 70 percent of copper powder, by weight, with the addition of 0, 10, 20 and 30 percent of strontium aluminate, by weight, respectively. Polyvinyl alcohol (PVA) was used as a binder and mixed with copper and strontium aluminate powder to produce the green specimens using a hydraulic machine. Then, the green samples were sintered at 900 °C for one hour. After sintering, PVA was eliminated and the samples became denser. It was found that the hardness of the sample without strontium aluminate (30.5 HV) is higher than that of the sample with 10% of strontium aluminate addition (12.84 HV). Furthermore, copper samples containing strontium aluminate were fluorescent under ultraviolet at 517 nm. The sample with the largest amount of strontium aluminate (70Cu-30SrAl2O4) has higher phosphorescence than 90Cu-10SrAl2O4. In sulphur atmosphere, the tarnish resistance was found to be improved when strontium aluminate was added into copper. The colour difference (DE*) of 100Cu, which has no strontium aluminate, was 6.42 and higher than that of 90Cu-10SrAl2O4 (DE*= 3.5), 80Cu-20SrAl2O4 (DE*= 1.37), and 70Cu-30SrAl2O4 (DE*= 0.49), when testing in sulphur atmosphere for 30 min. 70Cu-30SrAl2O4, containing the highest amount of strontium aluminate, has the least colour changing on its surface resulting in the resistance in tarnishing.","PeriodicalId":13686,"journal":{"name":"Integrated Ferroelectrics","volume":"35 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136316827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-27DOI: 10.1080/10584587.2023.2234612
Pattarasuda Wannarumon, Pichet Limsuwan, Pisan Sukwisute, Nuttakrit Somdock
AbstractIn this work, poly(vinylidene fluoride-hexafluoropropylene)/reduced graphene oxide films were prepared by the solution casting method with N,N-dimethylformamide (DMF) and DMF/acetone mixed solvents. The effects of reduced graphene oxide and solvent type on the morphology and crystal structure of the composite films were investigated by using scanning electron microscopy, Fourier-transform infrared spectroscopy, and Raman spectroscopy, respectively. The morphology study showed that the addition of acetone in the film process resulted in the occurrence of tiny pores on the film surfaces. The reduced graphene oxide incorporated into the PVDF-HFP was able to promote the formation of β- phase in the composites. The maximum power of 15.58 µW was obtained from the films using DMF/acetone mixture as solvent.Keywords: Triboelectric nanogeneratoracetoneN,N-dimethylformamidepoly(vinylidene fluoride-hexafluoropropylene)reduced graphene oxide Disclosure StatementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was financially supported by the School of Science, King Mongkut’s Institute of Technology Ladkrabang under grant number RA/TA-2562-M-023), Thailand. The authors also acknowledge the Scientific Instruments Centre, School of Science, King Mongkut’s Institute of Technology Ladkrabang for Scientific Instrument Support.
摘要以N,N-二甲基甲酰胺(DMF)和DMF/丙酮为混合溶剂，采用溶液浇铸法制备了聚偏氟乙烯-六氟丙烯/还原氧化石墨烯薄膜。利用扫描电镜、傅里叶变换红外光谱和拉曼光谱研究了还原氧化石墨烯和溶剂类型对复合膜形貌和晶体结构的影响。形貌研究表明，在成膜过程中丙酮的加入使膜表面出现了细小的孔隙。将还原氧化石墨烯加入到PVDF-HFP中，可以促进复合材料中β相的形成。以DMF/丙酮混合物为溶剂，膜的最大功率为15.58µW。关键词:摩擦电纳米发电机，丙酮烯，n -二甲基甲酰胺聚(偏氟乙烯-六氟丙烯)还原氧化石墨烯披露声明作者未报告潜在的利益冲突。本研究由泰国Ladkrabang蒙库特国王理工学院科学学院资助，资助号为RA/TA-2562-M-023。作者还对科学仪器中心、科学学院、King Mongkut’s Technology Institute of Ladkrabang的科学仪器支持表示感谢。
{"title":"Triboelectric Nanogenerator Prepared from Poly(vinylidene Fluoride-Hexafluoropropylene) Polymer Composite","authors":"Pattarasuda Wannarumon, Pichet Limsuwan, Pisan Sukwisute, Nuttakrit Somdock","doi":"10.1080/10584587.2023.2234612","DOIUrl":"https://doi.org/10.1080/10584587.2023.2234612","url":null,"abstract":"AbstractIn this work, poly(vinylidene fluoride-hexafluoropropylene)/reduced graphene oxide films were prepared by the solution casting method with N,N-dimethylformamide (DMF) and DMF/acetone mixed solvents. The effects of reduced graphene oxide and solvent type on the morphology and crystal structure of the composite films were investigated by using scanning electron microscopy, Fourier-transform infrared spectroscopy, and Raman spectroscopy, respectively. The morphology study showed that the addition of acetone in the film process resulted in the occurrence of tiny pores on the film surfaces. The reduced graphene oxide incorporated into the PVDF-HFP was able to promote the formation of β- phase in the composites. The maximum power of 15.58 µW was obtained from the films using DMF/acetone mixture as solvent.Keywords: Triboelectric nanogeneratoracetoneN,N-dimethylformamidepoly(vinylidene fluoride-hexafluoropropylene)reduced graphene oxide Disclosure StatementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was financially supported by the School of Science, King Mongkut’s Institute of Technology Ladkrabang under grant number RA/TA-2562-M-023), Thailand. The authors also acknowledge the Scientific Instruments Centre, School of Science, King Mongkut’s Institute of Technology Ladkrabang for Scientific Instrument Support.","PeriodicalId":13686,"journal":{"name":"Integrated Ferroelectrics","volume":"29 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136262169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-27DOI: 10.1080/10584587.2023.2234601
F. Khrongchaiyaphum, N. Wantana, P. Kanthang, J. Tharajak, T. Sareein, J. Kaewkhao
Abstract The melt-quenching process synthesized gadolinium oxide and fluoride in borophosphate glasses doped with terbium ions (Tb3+). The effect of fluoride compounds and their impacts on physical, optical, and luminescent properties have been investigated. The glasses absorbed near-infrared, visible light, and ultraviolet photons. The bright green emission circa 542 nm via the 5D4 → 7F5 radiative state of Tb3+ originated. Depending on the excitation, there are several sorts of ultraviolet, visible light, and X-ray. The values of decay time are in the order of milliseconds (ms). The Gd3+-Tb3+ energy transfer is vital in green emission under 275 nm excitation. According to the results obtained in this work, the developed glasses can be suitable candidates for green emission medium.
{"title":"Effect of Gadolinium Oxide and Gadolinium Fluoride in Borophosphate Glasses Doped with Tb <sub>2</sub> O <sub>3</sub> Content","authors":"F. Khrongchaiyaphum, N. Wantana, P. Kanthang, J. Tharajak, T. Sareein, J. Kaewkhao","doi":"10.1080/10584587.2023.2234601","DOIUrl":"https://doi.org/10.1080/10584587.2023.2234601","url":null,"abstract":"Abstract The melt-quenching process synthesized gadolinium oxide and fluoride in borophosphate glasses doped with terbium ions (Tb3+). The effect of fluoride compounds and their impacts on physical, optical, and luminescent properties have been investigated. The glasses absorbed near-infrared, visible light, and ultraviolet photons. The bright green emission circa 542 nm via the 5D4 → 7F5 radiative state of Tb3+ originated. Depending on the excitation, there are several sorts of ultraviolet, visible light, and X-ray. The values of decay time are in the order of milliseconds (ms). The Gd3+-Tb3+ energy transfer is vital in green emission under 275 nm excitation. According to the results obtained in this work, the developed glasses can be suitable candidates for green emission medium.","PeriodicalId":13686,"journal":{"name":"Integrated Ferroelectrics","volume":"263 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136263749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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