Pub Date : 2022-09-25DOI: 10.15251/jor.2022.185.649
L. Shoukat, M. Butt, S. Saleem, Z. M. Elqahtani, S. Aldaghfag, M. Ishfaq, M. Yaseen, E. Yousef, H. H. Hegazy
Physical features of transition metal (TM) doped lead selenide, Pb1-xCrxSe, Pb1-xCoxSe and Pb1-xNixSe (x=0% and 25%) have been investigated by ab-inito method. The exchange correlation energy is computed by generalized gradient approximation (GGA). A direct band gap (Eg) of 0.35 eV has been observed for PbSe. The analysis of spin-resolved electronic band structure (BS) and density of states (DOS) reveal the half-metallic ferromagnetic (HMF) character of doped compounds. In addition, the calculated magnetic moments (μB) of Pb1-xCrxSe, Pb1-xCoxSe and Pb1-xNixSe compounds are found to arise due to doped transition metals and confirmed by 3D spin-polaized iso-surface density plots. The optical features including optical conductivity (), absorption coefficient, extinction coefficient k, refractivity R, dielectric function and refractive index n() have been calculated to envisage the optical response of given materials. Further, the BoltzTrap code has been implemented to probe the thermoelectric characteristics in term of power factor (PF), Seebeck coefficient (S), thermal and electrical conductivity. The outcomes of calculations divulge that Pb1-xXxSe (X=Cr, Co, Ni) would be suitable candidates for both optoelectronics and thermoelectric applications.
{"title":"Tuned physical characteristics of PbSe binary compound: a DFT study","authors":"L. Shoukat, M. Butt, S. Saleem, Z. M. Elqahtani, S. Aldaghfag, M. Ishfaq, M. Yaseen, E. Yousef, H. H. Hegazy","doi":"10.15251/jor.2022.185.649","DOIUrl":"https://doi.org/10.15251/jor.2022.185.649","url":null,"abstract":"Physical features of transition metal (TM) doped lead selenide, Pb1-xCrxSe, Pb1-xCoxSe and Pb1-xNixSe (x=0% and 25%) have been investigated by ab-inito method. The exchange correlation energy is computed by generalized gradient approximation (GGA). A direct band gap (Eg) of 0.35 eV has been observed for PbSe. The analysis of spin-resolved electronic band structure (BS) and density of states (DOS) reveal the half-metallic ferromagnetic (HMF) character of doped compounds. In addition, the calculated magnetic moments (μB) of Pb1-xCrxSe, Pb1-xCoxSe and Pb1-xNixSe compounds are found to arise due to doped transition metals and confirmed by 3D spin-polaized iso-surface density plots. The optical features including optical conductivity (), absorption coefficient, extinction coefficient k, refractivity R, dielectric function and refractive index n() have been calculated to envisage the optical response of given materials. Further, the BoltzTrap code has been implemented to probe the thermoelectric characteristics in term of power factor (PF), Seebeck coefficient (S), thermal and electrical conductivity. The outcomes of calculations divulge that Pb1-xXxSe (X=Cr, Co, Ni) would be suitable candidates for both optoelectronics and thermoelectric applications.","PeriodicalId":54394,"journal":{"name":"Journal of Ovonic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44700065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-25DOI: 10.15251/jor.2022.185.661
F. Rahal, A. Kamarchou, A. Berchi, D. Abdi, I. Kemerchou
Cathodic electrodeposition of aqueous peroxo-titanium complex solution on fluorine doped tin dioxide (FTO) covered glass produced nanocrystalline amorphous and crystalline titanium dioxide. X-rays were used to examine the surface structures, which shows that heat treatment made a gradual crystallization of the deposits to the anatase form meanwhile the non-heated deposits present amorphous phase. Atomic force microscopy (AFM) and scanning electron microscopy (SEM) and atomic force microscopy (AFM) permit to investigate the morphological aspect of the deposits, which display a good adherence and a nanoparticulate grain size. The UV-Visible spectroscopic investigation technique reveals the better transparency aspect of the annealed films than the non-heated deposits. Ac impedance spectroscopy confirms the electrical conductivity of both deposits with more important activity for the non-heated deposits.
{"title":"Electrochemical preparation method of titanium dioxide on FTO","authors":"F. Rahal, A. Kamarchou, A. Berchi, D. Abdi, I. Kemerchou","doi":"10.15251/jor.2022.185.661","DOIUrl":"https://doi.org/10.15251/jor.2022.185.661","url":null,"abstract":"Cathodic electrodeposition of aqueous peroxo-titanium complex solution on fluorine doped tin dioxide (FTO) covered glass produced nanocrystalline amorphous and crystalline titanium dioxide. X-rays were used to examine the surface structures, which shows that heat treatment made a gradual crystallization of the deposits to the anatase form meanwhile the non-heated deposits present amorphous phase. Atomic force microscopy (AFM) and scanning electron microscopy (SEM) and atomic force microscopy (AFM) permit to investigate the morphological aspect of the deposits, which display a good adherence and a nanoparticulate grain size. The UV-Visible spectroscopic investigation technique reveals the better transparency aspect of the annealed films than the non-heated deposits. Ac impedance spectroscopy confirms the electrical conductivity of both deposits with more important activity for the non-heated deposits.","PeriodicalId":54394,"journal":{"name":"Journal of Ovonic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41924309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-09DOI: 10.15251/jor.2022.184.591
D. B. basha, E. Veena, M. Sekhar, A. Mallikarjuna, B. V. S. Reddy
{"title":"High saturation magnetization in Ni0.2Mn0.8Fe2O4 nanoparticles","authors":"D. B. basha, E. Veena, M. Sekhar, A. Mallikarjuna, B. V. S. Reddy","doi":"10.15251/jor.2022.184.591","DOIUrl":"https://doi.org/10.15251/jor.2022.184.591","url":null,"abstract":"","PeriodicalId":54394,"journal":{"name":"Journal of Ovonic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48525535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-09DOI: 10.15251/jor.2022.184.565
M. Nazar, U. Mishal, M. Khalid, P. Fazil, M. Rahim
In this study, the optical and structural properties of Magnesium doped Zinc Oxide (Zn1-xMgxO) nanoparticles (x = 1%, 3%, and 5%) were examined. The synthesis was carried out at 300 oC by using a simple co-precipitation method. The structural samples were used to characterize the synthesized nanoparticles by using Scanning Electron Microscopy (SEM) and X-Ray Diffraction (XRD). Energy Dispersive X-Ray spectroscopy (EDX) was used to determine the chemical composition of the samples. Furthermore, UV-Vis spectroscopy was conducted to study our samples’ optical characteristics. As per XRD analysis, both pure and Mg doped ZnO samples possess wurtzite structure. The particle size was revealed to decrease significantly with Mg concentration, from 36 nm for pure sample to 23.87 nm with 5% Mg. In comparison to ZnO, the XRD pattern of Mg-doped ZnO shows a peak shift towards lower 2θ values. As a result of deformation of crystal structure caused by integrated Mg+2 ions onto Zn+2 sites. SEM images of synthesized samples reveal that the nanoparticles possess sheet, spherical and rod like morphologies for different values of x. The EDX analysis verifies the purity of samples within the detection limits. According to optical absorption spectra obtained from UV-Visible spectroscopy in the 200nm to 1000nm range affirmed that as Mg concentration increased, the band gap increased from 3.37 eV for pure sample to 3.74 eV with 5% Mg. The UV-Visible spectra of pure ZnO and Mg-doped ZnO samples also exhibit distinct peaks in the UV region at 335 nm, 311 nm, 310.6 nm, and 310 nm. Across the spectra of pure and Mg-doped ZnO samples, the UV peak is attributed to free exciton transitions, whereas, in the spectra of Mg-doped ZnO UV absorbance peak in the visible region is attributed to the radiative transitions of electrons captured at oxygen vacant sites with holes trapped at singly ionized oxygen vacancies.
{"title":"The effect of magnesium doping concentration on the structural and optical properties of zinc oxide nanoparticles","authors":"M. Nazar, U. Mishal, M. Khalid, P. Fazil, M. Rahim","doi":"10.15251/jor.2022.184.565","DOIUrl":"https://doi.org/10.15251/jor.2022.184.565","url":null,"abstract":"In this study, the optical and structural properties of Magnesium doped Zinc Oxide (Zn1-xMgxO) nanoparticles (x = 1%, 3%, and 5%) were examined. The synthesis was carried out at 300 oC by using a simple co-precipitation method. The structural samples were used to characterize the synthesized nanoparticles by using Scanning Electron Microscopy (SEM) and X-Ray Diffraction (XRD). Energy Dispersive X-Ray spectroscopy (EDX) was used to determine the chemical composition of the samples. Furthermore, UV-Vis spectroscopy was conducted to study our samples’ optical characteristics. As per XRD analysis, both pure and Mg doped ZnO samples possess wurtzite structure. The particle size was revealed to decrease significantly with Mg concentration, from 36 nm for pure sample to 23.87 nm with 5% Mg. In comparison to ZnO, the XRD pattern of Mg-doped ZnO shows a peak shift towards lower 2θ values. As a result of deformation of crystal structure caused by integrated Mg+2 ions onto Zn+2 sites. SEM images of synthesized samples reveal that the nanoparticles possess sheet, spherical and rod like morphologies for different values of x. The EDX analysis verifies the purity of samples within the detection limits. According to optical absorption spectra obtained from UV-Visible spectroscopy in the 200nm to 1000nm range affirmed that as Mg concentration increased, the band gap increased from 3.37 eV for pure sample to 3.74 eV with 5% Mg. The UV-Visible spectra of pure ZnO and Mg-doped ZnO samples also exhibit distinct peaks in the UV region at 335 nm, 311 nm, 310.6 nm, and 310 nm. Across the spectra of pure and Mg-doped ZnO samples, the UV peak is attributed to free exciton transitions, whereas, in the spectra of Mg-doped ZnO UV absorbance peak in the visible region is attributed to the radiative transitions of electrons captured at oxygen vacant sites with holes trapped at singly ionized oxygen vacancies.","PeriodicalId":54394,"journal":{"name":"Journal of Ovonic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41972539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-09DOI: 10.15251/jor.2022.184.609
M. S. Kumar, G. Sakthivel, R. Thiyagarajan, M. Vanmathi, R. V. Mangalaraja, M. Ismail, A. Elayaperumal
A wide recognition for cordierite ceramic due to its superior mechanical and electrical properties made cordierite a candidate for study. A simple approach of synthesis of cordierite and cordierite zirconia (5-15 wt %) was tried at the stoichiometric composition with standard raw material of high purity. The binder, lubricant and flux such as polyvinyl alcohol, ethylene glycol and sodium hydroxide respectively were added with 1 wt%. The powders were mixed, wet milled, dried at 100°C for 12 h, compacted and sintered at different temperatures between 600-1400°C for 3 h. The studies on XRD, FTIR and TG/DTA were carried out and the results from the studies confirmed the presence of cordierite phase alone for pure cordierite and cordierite along with zircon for cordieritezirconia compositions.
{"title":"Synthesis and characterization of cordierite and cordierite-zirconia by conventional approach","authors":"M. S. Kumar, G. Sakthivel, R. Thiyagarajan, M. Vanmathi, R. V. Mangalaraja, M. Ismail, A. Elayaperumal","doi":"10.15251/jor.2022.184.609","DOIUrl":"https://doi.org/10.15251/jor.2022.184.609","url":null,"abstract":"A wide recognition for cordierite ceramic due to its superior mechanical and electrical properties made cordierite a candidate for study. A simple approach of synthesis of cordierite and cordierite zirconia (5-15 wt %) was tried at the stoichiometric composition with standard raw material of high purity. The binder, lubricant and flux such as polyvinyl alcohol, ethylene glycol and sodium hydroxide respectively were added with 1 wt%. The powders were mixed, wet milled, dried at 100°C for 12 h, compacted and sintered at different temperatures between 600-1400°C for 3 h. The studies on XRD, FTIR and TG/DTA were carried out and the results from the studies confirmed the presence of cordierite phase alone for pure cordierite and cordierite along with zircon for cordieritezirconia compositions.","PeriodicalId":54394,"journal":{"name":"Journal of Ovonic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44602396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-09DOI: 10.15251/jor.2022.184.617
E. M. Salman, M. Jobayr, H. K. Hassun
Low-dimensional materials have attracted significant attention in developing and enhancing the performance of quantum well lasers due to their extraordinary unique properties. The optical confinement factor is one of the most effective parameters for evaluating the optimal performance of a semiconductor laser diode when used to measure the optical gain and current threshold. The optical confinement factor and the radiative recombination of single quantum wells (SQW) and multi-quantum wells (MQW) for InGaAsP/InP have been theoretically studied using both radiative and Auger coefficients. Quantum well width, barrier width, and number of quantum wells were all looked at to see how these things changed the optical confinement factor and radiative and non-radiative recombination coefficients for multi-quantum well structures. It was found that the optical confinement factor increases with an increase in the number of wells. The largest value of the optical confinement factor was determined when the number of wells was five at any width. The optical confinement coefficient was 0.23, 0.216, and 0.203 for the number of wells (3, 4, and 5) and well width (27, 19.5, and 15) nm, respectively. In addition, the radiative recombination coefficient increases with the width of the quantum well after 5 nm, and it is much bigger than that of its bulk counterparts.
{"title":"Confinement factor and carrier recombination of InGaAsP/InP quantum well lasers","authors":"E. M. Salman, M. Jobayr, H. K. Hassun","doi":"10.15251/jor.2022.184.617","DOIUrl":"https://doi.org/10.15251/jor.2022.184.617","url":null,"abstract":"Low-dimensional materials have attracted significant attention in developing and enhancing the performance of quantum well lasers due to their extraordinary unique properties. The optical confinement factor is one of the most effective parameters for evaluating the optimal performance of a semiconductor laser diode when used to measure the optical gain and current threshold. The optical confinement factor and the radiative recombination of single quantum wells (SQW) and multi-quantum wells (MQW) for InGaAsP/InP have been theoretically studied using both radiative and Auger coefficients. Quantum well width, barrier width, and number of quantum wells were all looked at to see how these things changed the optical confinement factor and radiative and non-radiative recombination coefficients for multi-quantum well structures. It was found that the optical confinement factor increases with an increase in the number of wells. The largest value of the optical confinement factor was determined when the number of wells was five at any width. The optical confinement coefficient was 0.23, 0.216, and 0.203 for the number of wells (3, 4, and 5) and well width (27, 19.5, and 15) nm, respectively. In addition, the radiative recombination coefficient increases with the width of the quantum well after 5 nm, and it is much bigger than that of its bulk counterparts.","PeriodicalId":54394,"journal":{"name":"Journal of Ovonic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42609621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-09DOI: 10.15251/jor.2022.184.579
S. M. A. Al-dujayli, N. Ali
Thin films of (CdO)x (CuO)1-x (where x = 0.0, 0.2, 0.3, 0.4 and 0.5) were prepared by the pulsed laser deposition. The CuO addition caused an increase in diffraction peaks intensity at (111) and a decrease in diffraction peaks intensity at (200). As CuO content increases, the band gap increases to a maximum of 3.51 eV, maximum resistivity of 8.251x 104 Ω.cm with mobility of 199.5 cm2 / V.s, when x= 0.5. The results show that the conductivity is ntype when x value was changed in the range (0 to 0.4) but further addition of CuO converted the samples to p-type.
{"title":"The effects of CuO doping on structural, electrical and optical properties of CdO thin films deposited by pulsed laser deposition technique","authors":"S. M. A. Al-dujayli, N. Ali","doi":"10.15251/jor.2022.184.579","DOIUrl":"https://doi.org/10.15251/jor.2022.184.579","url":null,"abstract":"Thin films of (CdO)x (CuO)1-x (where x = 0.0, 0.2, 0.3, 0.4 and 0.5) were prepared by the pulsed laser deposition. The CuO addition caused an increase in diffraction peaks intensity at (111) and a decrease in diffraction peaks intensity at (200). As CuO content increases, the band gap increases to a maximum of 3.51 eV, maximum resistivity of 8.251x 104 Ω.cm with mobility of 199.5 cm2 / V.s, when x= 0.5. The results show that the conductivity is ntype when x value was changed in the range (0 to 0.4) but further addition of CuO converted the samples to p-type.","PeriodicalId":54394,"journal":{"name":"Journal of Ovonic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49369374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-09DOI: 10.15251/jor.2022.184.601
H. K. Hassun, M. H. Mustafa, R. H. Athab, B. K. Al-Maiyaly, B. H. Hussein
The (NiTsPc) thin films operating by vacuum evaporation technique are high recital and good desirable for number of applications, were dumped on glass substrates at room temperature with (200±20nm) thickness and doped with Al at different percentage (0.01,0.03) besides annealing the sample with 200˚C for 1 hours . The stimuluses of aluminum dopant percentage on characterization of the dropped (Ni Ts Pc) thin films were studied through X-ray diffraction in addition from the attained results, were all the films have polycrystalline in nature, as well the fallouts of XRD aimed at film illustrations polycrystalline, depending on the Al ratio doping, the results, SEM exposed the surface is regularly homogeneous. Utilizing first-ideologies calculations, we demonstration that appropriate band gaps and optical properties adjacent to that of direct energy gap intended for wholly samples.
{"title":"Effect of dopant of aluminum on the structural and optical properties of NiTsPc thin films","authors":"H. K. Hassun, M. H. Mustafa, R. H. Athab, B. K. Al-Maiyaly, B. H. Hussein","doi":"10.15251/jor.2022.184.601","DOIUrl":"https://doi.org/10.15251/jor.2022.184.601","url":null,"abstract":"The (NiTsPc) thin films operating by vacuum evaporation technique are high recital and good desirable for number of applications, were dumped on glass substrates at room temperature with (200±20nm) thickness and doped with Al at different percentage (0.01,0.03) besides annealing the sample with 200˚C for 1 hours . The stimuluses of aluminum dopant percentage on characterization of the dropped (Ni Ts Pc) thin films were studied through X-ray diffraction in addition from the attained results, were all the films have polycrystalline in nature, as well the fallouts of XRD aimed at film illustrations polycrystalline, depending on the Al ratio doping, the results, SEM exposed the surface is regularly homogeneous. Utilizing first-ideologies calculations, we demonstration that appropriate band gaps and optical properties adjacent to that of direct energy gap intended for wholly samples.","PeriodicalId":54394,"journal":{"name":"Journal of Ovonic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48001115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-09DOI: 10.15251/jor.2022.184.627
Z. Latif, A. U. Rehman, M. Yusuf, N. Amin, M. Arshad
The sol-gel auto combustion route was used to synthesis Mn-Cu-Cd-Gd ferritegraphene nanoplatelets composites having chemical formula Mn0.5Cu0.25Cd0.25Fe1.97Gd0.03O4/Graphene nanoplatelets (MCCFG/GNPs composites) (where GNPs wt% = 0.0wt%, 1.25wt%, 2.5wt%, 3.75wt%, 5wt%). The incorporation of GNPs in the MCCFG sample enhanced the crystallite size from 35.89 nm to 58.92 nm. Raman modes of vibration also confirmed the spinel structure. The resistivity was reduced and optical bandgap energy was increased with increasing content of GNPs. Moreover, both dielectric constant and saturation magnetization was reduced with the insertion of GNPs in the MCCGF spinel lattice.
{"title":"Estimation of the spectral, electrical, and dielectric properties of Mn-Cu-Cd-Gd ferritegraphene nanoplatelets composites","authors":"Z. Latif, A. U. Rehman, M. Yusuf, N. Amin, M. Arshad","doi":"10.15251/jor.2022.184.627","DOIUrl":"https://doi.org/10.15251/jor.2022.184.627","url":null,"abstract":"The sol-gel auto combustion route was used to synthesis Mn-Cu-Cd-Gd ferritegraphene nanoplatelets composites having chemical formula Mn0.5Cu0.25Cd0.25Fe1.97Gd0.03O4/Graphene nanoplatelets (MCCFG/GNPs composites) (where GNPs wt% = 0.0wt%, 1.25wt%, 2.5wt%, 3.75wt%, 5wt%). The incorporation of GNPs in the MCCFG sample enhanced the crystallite size from 35.89 nm to 58.92 nm. Raman modes of vibration also confirmed the spinel structure. The resistivity was reduced and optical bandgap energy was increased with increasing content of GNPs. Moreover, both dielectric constant and saturation magnetization was reduced with the insertion of GNPs in the MCCGF spinel lattice.","PeriodicalId":54394,"journal":{"name":"Journal of Ovonic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43934258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-09DOI: 10.15251/jor.2022.185.637
P. Pachamuthu, A. jeyakumari, N. Srinivasan
Depending upon their origin and synthesis methods, nanoparticles possess unique physicochemical, structural and morphological characteristics, which are important in a wide variety of applications concomitant to various fields. In the present work, Magnesium doped zinc oxide nanoparticles with different concentrations (5 atomic % and 10 atomic %) are prepared and the prepared samples are annealed at 200 ⸰C for 2 h in a muffle furnace. The structure, surface morphology, chemical composition, optical properties and photoluminescence properties were analyzed using standard procedures. The antioxidant potential and cytotoxicity against the breast cancer MDAMB231 cancer cell line of prepared nanoparticles were explored. A simple, economical soft chemical method was used. The XRD analysis confirmed the presence of hexagonal wurtzite phase with a space group P63mc all the prepared samples. The estimated average grain size for the sample MZ2 (18.16 nm) was smaller than the other samples. The SEM micrograph showed that the morphology of the samples were exhibited the rod shape (MZ1, MZ2 and MZ4) and flower shape (MZ3). The purity of the samples was confirmed by EDAX data. The estimated band gap energy of sample MZ1 and sample MZ3 were 3.41e V and 3.38 e V from the UV-vis analysis. The FT-IR spectra of the samples predicted the presence of functional groups for Zn-O and Mg-O bonds. The PL analysis displayed a strong UV emission peak at 387 nm and a green emission peak at 557 nm. The results of the prepared samples prove the potential toxicity against MDAMB231 breast cancer cell line.
{"title":"Microstructure, surface morphology and anticancer activity of magnesium doped zinc oxide nanoparticles","authors":"P. Pachamuthu, A. jeyakumari, N. Srinivasan","doi":"10.15251/jor.2022.185.637","DOIUrl":"https://doi.org/10.15251/jor.2022.185.637","url":null,"abstract":"Depending upon their origin and synthesis methods, nanoparticles possess unique physicochemical, structural and morphological characteristics, which are important in a wide variety of applications concomitant to various fields. In the present work, Magnesium doped zinc oxide nanoparticles with different concentrations (5 atomic % and 10 atomic %) are prepared and the prepared samples are annealed at 200 ⸰C for 2 h in a muffle furnace. The structure, surface morphology, chemical composition, optical properties and photoluminescence properties were analyzed using standard procedures. The antioxidant potential and cytotoxicity against the breast cancer MDAMB231 cancer cell line of prepared nanoparticles were explored. A simple, economical soft chemical method was used. The XRD analysis confirmed the presence of hexagonal wurtzite phase with a space group P63mc all the prepared samples. The estimated average grain size for the sample MZ2 (18.16 nm) was smaller than the other samples. The SEM micrograph showed that the morphology of the samples were exhibited the rod shape (MZ1, MZ2 and MZ4) and flower shape (MZ3). The purity of the samples was confirmed by EDAX data. The estimated band gap energy of sample MZ1 and sample MZ3 were 3.41e V and 3.38 e V from the UV-vis analysis. The FT-IR spectra of the samples predicted the presence of functional groups for Zn-O and Mg-O bonds. The PL analysis displayed a strong UV emission peak at 387 nm and a green emission peak at 557 nm. The results of the prepared samples prove the potential toxicity against MDAMB231 breast cancer cell line.","PeriodicalId":54394,"journal":{"name":"Journal of Ovonic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49355246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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