Pub Date : 2023-01-31DOI: 10.1051/epjap/2023220225
Xingguo Wang, Lan Wang, Y. Xu, Haisheng Shu
Abstract: A semi-analytical vibration analyzing process is presented for a kind of finite composite elastic metamaterial plate by combining the equivalent medium theory and the first-order shear deformation sandwich plate theory, and the natural and steady-state vibration characteristics of such complex composite structure are investigated by means of equivalent analysis. The effectiveness of the semi-analytical analyzing process is demonstrated and some extraordinary vibration behaviors of such composite structure are revealed, such as there is no natural frequency in the bandgap, the modal density consistently increases around the bandgap's starting frequency, and the modes of the appropriate orders before and after the bandgap are consistent at the macroscopic level. The semi-analytical analyzing process and the special vibration behaviors may provide useful reference for relevant investigation and design of composite elastic metamaterial plate structures in the field of vibration control and isolation.
{"title":"Vibration analysis of a composite elastic metamaterial plate based on semi-analytical method","authors":"Xingguo Wang, Lan Wang, Y. Xu, Haisheng Shu","doi":"10.1051/epjap/2023220225","DOIUrl":"https://doi.org/10.1051/epjap/2023220225","url":null,"abstract":"Abstract: A semi-analytical vibration analyzing process is presented for a kind of finite composite elastic metamaterial plate by combining the equivalent medium theory and the first-order shear deformation sandwich plate theory, and the natural and steady-state vibration characteristics of such complex composite structure are investigated by means of equivalent analysis. The effectiveness of the semi-analytical analyzing process is demonstrated and some extraordinary vibration behaviors of such composite structure are revealed, such as there is no natural frequency in the bandgap, the modal density consistently increases around the bandgap's starting frequency, and the modes of the appropriate orders before and after the bandgap are consistent at the macroscopic level. The semi-analytical analyzing process and the special vibration behaviors may provide useful reference for relevant investigation and design of composite elastic metamaterial plate structures in the field of vibration control and isolation.","PeriodicalId":301303,"journal":{"name":"The European Physical Journal Applied Physics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132348356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Perovskites have attracted growing interest in recent era due to their unique properties and potential applications. Barium cerate (BC) proton-conducting perovskites have been examined over decades for various applications such as hydrogen sensors, fuel cells, proton separation membranes, etc. when compared with oxide ion conductors under the same circumstances, ceramic proton conducting barium cerate can diminish the working temperature of solid oxide fuel cells to an intermediate temperature range, 673 – 873 K because of their higher ionic conduction. The present review carefully analyses and summarizes different synthesis approaches with optimization conditions to prepare BC-derived perovskites and the reported data have been carefully analyzed. A range of synthesis methods such as solid-state reaction method and wet chemical processes like coprecipitation, combustion, pechini method, etc., have been systematically investigated. Even though the solid-state method has considerable disadvantages, most researchers avoid its incompetence due to the easiness of processing. Applications of the material have been briefly deliberated to exemplify its technological importance. The present review concluded with the recent signs of progress and innovative techniques employed to overcome the processing complications in these materials.
{"title":"Barium Cerate and its composite perovskites – synthesis techniques: a comprehensive review","authors":"Seere Valappil Jasira, Vannadil Puthiyaveetil Veena, Cherlan Kottianmadathil Shilpa, Kavukuzhi Meerasahib Nissamudeen","doi":"10.1051/epjap/2023220259","DOIUrl":"https://doi.org/10.1051/epjap/2023220259","url":null,"abstract":"Perovskites have attracted growing interest in recent era due to their unique properties and potential applications. Barium cerate (BC) proton-conducting perovskites have been examined over decades for various applications such as hydrogen sensors, fuel cells, proton separation membranes, etc. when compared with oxide ion conductors under the same circumstances, ceramic proton conducting barium cerate can diminish the working temperature of solid oxide fuel cells to an intermediate temperature range, 673 – 873 K because of their higher ionic conduction. The present review carefully analyses and summarizes different synthesis approaches with optimization conditions to prepare BC-derived perovskites and the reported data have been carefully analyzed. A range of synthesis methods such as solid-state reaction method and wet chemical processes like coprecipitation, combustion, pechini method, etc., have been systematically investigated. Even though the solid-state method has considerable disadvantages, most researchers avoid its incompetence due to the easiness of processing. Applications of the material have been briefly deliberated to exemplify its technological importance. The present review concluded with the recent signs of progress and innovative techniques employed to overcome the processing complications in these materials.","PeriodicalId":301303,"journal":{"name":"The European Physical Journal Applied Physics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130217614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The role of Stannum was investigated in formation and transformation of Vanadium-Dioxide phase in a deep perspective through characterization methods including Raman spectra, XRD, OM, SEM, UV-vis and Electrochemical Workstation. The result showed supersaturated Stannum atoms could exist in SnxV2-xO5 as amorphous solid solution from non-equilibrium sputtering method, by which the unitary phase Sn-doped VO2 could be obtained under either thermal de-oxidation or thermal de-composition mechanism. Furthermore, the cooperation stannum atoms with oxygen vacancies could regulate the formation of vanadium dioxide M1 or M2 phase, in turn engineer the phase transformation (M-R) temperature of VO2.
{"title":"Effect of Sn on formation and transformation of VO2 phase","authors":"Hao. Dong, Dechen Shang, Yanxue Lu, Yu-tong Li, Fanxin Wu, Jun-wei Zhang","doi":"10.1051/epjap/2023220267","DOIUrl":"https://doi.org/10.1051/epjap/2023220267","url":null,"abstract":"The role of Stannum was investigated in formation and transformation of Vanadium-Dioxide phase in a deep perspective through characterization methods including Raman spectra, XRD, OM, SEM, UV-vis and Electrochemical Workstation. The result showed supersaturated Stannum atoms could exist in SnxV2-xO5 as amorphous solid solution from non-equilibrium sputtering method, by which the unitary phase Sn-doped VO2 could be obtained under either thermal de-oxidation or thermal de-composition mechanism. Furthermore, the cooperation stannum atoms with oxygen vacancies could regulate the formation of vanadium dioxide M1 or M2 phase, in turn engineer the phase transformation (M-R) temperature of VO2.","PeriodicalId":301303,"journal":{"name":"The European Physical Journal Applied Physics","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134591259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-23DOI: 10.1051/epjap/2023220260
B. Hatimi, M. Bensemlali, H. Hafdi, J. Mouldar, A. Loudiki, Meriam Joudi, A. Aarfane, Moulay Abderrahim El Mhammedi, M. Bakasse
An Ultrafiltration (UF) inorganic membrane was synthesized based on Pyrrhotite Ash solid waste resulting from mining activity and naturel clay. The α-Fe2O3 UF-Membrane was prepared by spearing out metal-organic complex on microfiltration (MF) ceramic support, while the MF-support was prepared by mixture of pyrrhotite ash and a natural clay. The Pyrrhotite Ash was also deployed in the preparation of the metal-organic complex. The membrane composition, structure, morphology and operating parameters was studied. The MF support show a water permeability of 2.37 10-6 m3/s.m².kPa while the UF membrane exhibits a permeability of 2.49 10-7 m3/s.m².kPa. Other ways, the elaborated MF support and UF membrane was test on the elimination the treatment of tow textile wastewaters of reactive and disperse nature. The results show that the cascade filtration of support and UF membrane lead to the elimination of more 99 and 94% of turbidity and DCO in the case of the tow wastewaters.
{"title":"HEMATITE BASED ULTRAFILTRATION MEMBRANE PREPARED FROM PYRRHOTITE ASH WASTE FOR TEXTILE WASTEWATER TREATMENT","authors":"B. Hatimi, M. Bensemlali, H. Hafdi, J. Mouldar, A. Loudiki, Meriam Joudi, A. Aarfane, Moulay Abderrahim El Mhammedi, M. Bakasse","doi":"10.1051/epjap/2023220260","DOIUrl":"https://doi.org/10.1051/epjap/2023220260","url":null,"abstract":"An Ultrafiltration (UF) inorganic membrane was synthesized based on Pyrrhotite Ash solid waste resulting from mining activity and naturel clay. The α-Fe2O3 UF-Membrane was prepared by spearing out metal-organic complex on microfiltration (MF) ceramic support, while the MF-support was prepared by mixture of pyrrhotite ash and a natural clay. The Pyrrhotite Ash was also deployed in the preparation of the metal-organic complex. The membrane composition, structure, morphology and operating parameters was studied. The MF support show a water permeability of 2.37 10-6 m3/s.m².kPa while the UF membrane exhibits a permeability of 2.49 10-7 m3/s.m².kPa. Other ways, the elaborated MF support and UF membrane was test on the elimination the treatment of tow textile wastewaters of reactive and disperse nature. The results show that the cascade filtration of support and UF membrane lead to the elimination of more 99 and 94% of turbidity and DCO in the case of the tow wastewaters.","PeriodicalId":301303,"journal":{"name":"The European Physical Journal Applied Physics","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133871068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-11DOI: 10.1051/epjap/2023220270
Yurong Gao, Y. Tong, L. Song, Jiacheng Liu, B. Zang, Mingliang Xiang, Meng Gao, Yan Zhang, J. Huo, Jun-Qiang Wang
Stress relief can improve the soft magnetic properties of Fe-based metallic glasses (MGs) and is vital for industrial applications. In this work, we investigated the evolution of soft magnetic properties, relaxation dynamics, and mechanical properties of Fe-based MGs under different applied tensile strains and stress relaxation times. We found that stress relaxation can significantly reduce coercivity Hc compared with stress-free annealing and the as-cast state. Furthermore, the coercivity Hc, apparent activation volume Vact and time constant tr all show analogous two-stage variation with annealing time, accompanied by approximate crossovers. This suggests that the microstructure change emerges, further verified by the domain wall motion and the transition from elastic to plastic. These results are helpful in preparing Fe-based MGs with excellent soft magnetic and mechanical properties by controlling the stress relaxation condition.
{"title":"Effect of stress relaxation on soft magnetic properties of Fe76Si9B10P5 metallic glass","authors":"Yurong Gao, Y. Tong, L. Song, Jiacheng Liu, B. Zang, Mingliang Xiang, Meng Gao, Yan Zhang, J. Huo, Jun-Qiang Wang","doi":"10.1051/epjap/2023220270","DOIUrl":"https://doi.org/10.1051/epjap/2023220270","url":null,"abstract":"Stress relief can improve the soft magnetic properties of Fe-based metallic glasses (MGs) and is vital for industrial applications. In this work, we investigated the evolution of soft magnetic properties, relaxation dynamics, and mechanical properties of Fe-based MGs under different applied tensile strains and stress relaxation times. We found that stress relaxation can significantly reduce coercivity Hc compared with stress-free annealing and the as-cast state. Furthermore, the coercivity Hc, apparent activation volume Vact and time constant tr all show analogous two-stage variation with annealing time, accompanied by approximate crossovers. This suggests that the microstructure change emerges, further verified by the domain wall motion and the transition from elastic to plastic. These results are helpful in preparing Fe-based MGs with excellent soft magnetic and mechanical properties by controlling the stress relaxation condition.","PeriodicalId":301303,"journal":{"name":"The European Physical Journal Applied Physics","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125406126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-09DOI: 10.1051/epjap/2023220307
S. Zhang, Wenqiang Li, Chengfu Han, S. Wu, Chen Chen, Ran Wei, Tan Wang, Fushan Li
Influences of surface state on thermal stability and magnetic properties for Fe82Si1B12C5 completely amorphous alloys and Fe83Si1B12C4 amorphous alloys with partial crystallization at their surface have been investigated by layer polished-removal method. The crystallization enthalpy of α-Fe phase for the two amorphous alloys decreases obviously with polishing removal of surface layer with the thickness of removal, due to the alteration of internal stress state. An increase of only 1.2% in Fe content causes an increase of 8.4 % in crystallization enthalpy of α-Fe phase for the alloy system with an initial casting thickness, indicating that the thermal stability is stress-sensitive for Fe-based amorphous alloys with high Fe content close to amorphous forming boundary are easier to crystallize. It was found that in the as-quenched state the coercivity for both of them increases linearly with the thickness of removal, which is caused by an increase in internal stress. And it was confirmed by experiment that adequate annealing can greatly improve the soft magnetic properties and alter thermal stability.
{"title":"Influences of surface state on thermal stability and magnetic properties of Fe-Si-B-C amorphous alloy","authors":"S. Zhang, Wenqiang Li, Chengfu Han, S. Wu, Chen Chen, Ran Wei, Tan Wang, Fushan Li","doi":"10.1051/epjap/2023220307","DOIUrl":"https://doi.org/10.1051/epjap/2023220307","url":null,"abstract":"Influences of surface state on thermal stability and magnetic properties for Fe82Si1B12C5 completely amorphous alloys and Fe83Si1B12C4 amorphous alloys with partial crystallization at their surface have been investigated by layer polished-removal method. The crystallization enthalpy of α-Fe phase for the two amorphous alloys decreases obviously with polishing removal of surface layer with the thickness of removal, due to the alteration of internal stress state. An increase of only 1.2% in Fe content causes an increase of 8.4 % in crystallization enthalpy of α-Fe phase for the alloy system with an initial casting thickness, indicating that the thermal stability is stress-sensitive for Fe-based amorphous alloys with high Fe content close to amorphous forming boundary are easier to crystallize. It was found that in the as-quenched state the coercivity for both of them increases linearly with the thickness of removal, which is caused by an increase in internal stress. And it was confirmed by experiment that adequate annealing can greatly improve the soft magnetic properties and alter thermal stability.","PeriodicalId":301303,"journal":{"name":"The European Physical Journal Applied Physics","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124318828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-05DOI: 10.1051/epjap/2023220283
A. Aboulouard, Dilara Altunkum, Emine Babur Sas, M. Bensemlali, M. Can, H. Nasrellah, M. El idrissi
We investigate a new family of the triphenylamine with D-π-A dyes by the help of quantum physics computations relaying on density functional theory (DFT) including time dependent-density functional theory (TD-DFT) calculations. We examine the distributions of molecular orbitals, the light collection efficiency, the absorption properties, the oscillator forces, the electronic excitation energy, and the injection driving forces. Among others, we reveal that the organic dyes involve a narrow band gap and good optical behaviors. Moreover, we approach the photovoltaic features of such novel materials. We find that they exhibit the capacity to inject the electrons into the conduction band. We expect that the obtained results could support the applications of such materials in solar energy productions.
{"title":"Experimental and Computational Study of Triphenylamine Dyes for Photovoltaic Cell Applications","authors":"A. Aboulouard, Dilara Altunkum, Emine Babur Sas, M. Bensemlali, M. Can, H. Nasrellah, M. El idrissi","doi":"10.1051/epjap/2023220283","DOIUrl":"https://doi.org/10.1051/epjap/2023220283","url":null,"abstract":"We investigate a new family of the triphenylamine with D-π-A dyes by the help of quantum physics computations relaying on density functional theory (DFT) including time dependent-density functional theory (TD-DFT) calculations. We examine the distributions of molecular orbitals, the light collection efficiency, the absorption properties, the oscillator forces, the electronic excitation energy, and the injection driving forces. Among others, we reveal that the organic dyes involve a narrow band gap and good optical behaviors. Moreover, we approach the photovoltaic features of such novel materials. We find that they exhibit the capacity to inject the electrons into the conduction band. We expect that the obtained results could support the applications of such materials in solar energy productions.","PeriodicalId":301303,"journal":{"name":"The European Physical Journal Applied Physics","volume":"391 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131586720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-03DOI: 10.1051/epjap/2023220245
M. He, Yongzheng Zhu, Ke Ma, Zhihua Zhang
Electronic structure and microstructure of ternary selenide superconductor K0.7Fe1.7Se2 have been investigated by transmission electric microscopy (TEM) and band structure calculations using ab initio method. Electron energy-loss spectroscopy (EELS) were performed to study K0.7Fe1.7Se2 experimentally. The individual inter-bands transitions were identified through the comparison between the transition energy with the partial density of states (PDOS) obtained by first principle calculation. The electron energy-loss near-edge fine structure (ELNES) were analyzed, the core-hole effect was found to play a key role in the simulating of ELNES. The results can present some insight on the interaction between superconductivity and electronic structure in this group of iron-related superconductor.
{"title":"Electron energy loss spectroscopy of K0.7Fe1.7Se2 superconductor","authors":"M. He, Yongzheng Zhu, Ke Ma, Zhihua Zhang","doi":"10.1051/epjap/2023220245","DOIUrl":"https://doi.org/10.1051/epjap/2023220245","url":null,"abstract":"Electronic structure and microstructure of ternary selenide superconductor K0.7Fe1.7Se2 have been investigated by transmission electric microscopy (TEM) and band structure calculations using ab initio method. Electron energy-loss spectroscopy (EELS) were performed to study K0.7Fe1.7Se2 experimentally. The individual inter-bands transitions were identified through the comparison between the transition energy with the partial density of states (PDOS) obtained by first principle calculation. The electron energy-loss near-edge fine structure (ELNES) were analyzed, the core-hole effect was found to play a key role in the simulating of ELNES. The results can present some insight on the interaction between superconductivity and electronic structure in this group of iron-related superconductor.","PeriodicalId":301303,"journal":{"name":"The European Physical Journal Applied Physics","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116943296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-23DOI: 10.1051/epjap/2022220212
A. Karthikeyan, R. Mariappan, G. Gowrisankar, E. Krishnamoorthy
The transition metal oxides are emerging materials in solving existing environmental problems of removal of organic dye from the industrial wastes. Out of many transition metal oxides, cobalt oxide is one such potential material of low cost, eco-friendly and easily separable. Herein a facile synthesis route has been adopted for the preparation of Co3O4 nanoparticles which exhibited a best photocatalytic degradation activity. The structure, morphology and optical behaviours were studied using XRD, SEM, UV–Vis and Raman spectra. The photo-degradation of methylene blue on Co3O4 nanoparticles was carried out in the presence of ultra violet light irradiation. The examined results showed the best photocatalytic degradation activity of methylene blue with degradation efficiency of 99.33% in 90 min and rate constant of 0.064. This might be attributed due to enhanced charge separation - transfer and the creation of OH radicals under uv radiation. In addition the Co3O4 nanoparticles are easily separated by using an external magnetic field.
{"title":"Enhanced photocatalytic degradation property of surfactant-free cobalt oxide nanocapsules on methylene blue dye","authors":"A. Karthikeyan, R. Mariappan, G. Gowrisankar, E. Krishnamoorthy","doi":"10.1051/epjap/2022220212","DOIUrl":"https://doi.org/10.1051/epjap/2022220212","url":null,"abstract":"The transition metal oxides are emerging materials in solving existing environmental problems of removal of organic dye from the industrial wastes. Out of many transition metal oxides, cobalt oxide is one such potential material of low cost, eco-friendly and easily separable. Herein a facile synthesis route has been adopted for the preparation of Co3O4 nanoparticles which exhibited a best photocatalytic degradation activity. The structure, morphology and optical behaviours were studied using XRD, SEM, UV–Vis and Raman spectra. The photo-degradation of methylene blue on Co3O4 nanoparticles was carried out in the presence of ultra violet light irradiation. The examined results showed the best photocatalytic degradation activity of methylene blue with degradation efficiency of 99.33% in 90 min and rate constant of 0.064. This might be attributed due to enhanced charge separation - transfer and the creation of OH radicals under uv radiation. In addition the Co3O4 nanoparticles are easily separated by using an external magnetic field.","PeriodicalId":301303,"journal":{"name":"The European Physical Journal Applied Physics","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127637015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-21DOI: 10.1051/epjap/2022220234
Santosh Kumar Parida, Shashwati Meher
In this communication, a monoclinic BaCaZrMnO6 double perovskite was synthesized by a solid-state reaction technique. The Williamson-Hall method was used to calculate mean crystallite size of 53.1 nm and micro-lattice strains of 0.0256% respectively. The study of the microstructural properties of the sample was completed using a scanning electron microscope (SEM) where compositional purity was checked by using energy dispersive x-ray spectroscopy (EDAX). Raman spectrum shows all atomic modes of vibrations; which gives information about phase, polymorphic crystallinity & molecular interaction and confirms the presence of all constituent elements. The UV visible spectrum analysis suggests the bandgap energy of 1.68 eV, suitable for some optoelectronic devices. The presence of the Maxwell-Wanger type of dispersion was confirmed from the analysis of the dielectric study. The analysis of the impedance spectroscopy suggests that the sample has a negative temperature coefficient of resistance (NTCR) while the study of the modulus confirms a non-Debye type of relaxation process. The results of the ac conductivity study confirm a thermally activated relaxation process. The semiconductor character of the sample was confirmed from the depressed semi-circular arcs in both Nyquist and Cole-Cole plots; which may find some applications related to sensors and energy storage devices.
{"title":"A double perovskite BaCaZrMnO6: Synthesis, microstructural dielectric, transport and optical properties","authors":"Santosh Kumar Parida, Shashwati Meher","doi":"10.1051/epjap/2022220234","DOIUrl":"https://doi.org/10.1051/epjap/2022220234","url":null,"abstract":"In this communication, a monoclinic BaCaZrMnO6 double perovskite was synthesized by a solid-state reaction technique. The Williamson-Hall method was used to calculate mean crystallite size of 53.1 nm and micro-lattice strains of 0.0256% respectively. The study of the microstructural properties of the sample was completed using a scanning electron microscope (SEM) where compositional purity was checked by using energy dispersive x-ray spectroscopy (EDAX). Raman spectrum shows all atomic modes of vibrations; which gives information about phase, polymorphic crystallinity & molecular interaction and confirms the presence of all constituent elements. The UV visible spectrum analysis suggests the bandgap energy of 1.68 eV, suitable for some optoelectronic devices. The presence of the Maxwell-Wanger type of dispersion was confirmed from the analysis of the dielectric study. The analysis of the impedance spectroscopy suggests that the sample has a negative temperature coefficient of resistance (NTCR) while the study of the modulus confirms a non-Debye type of relaxation process. The results of the ac conductivity study confirm a thermally activated relaxation process. The semiconductor character of the sample was confirmed from the depressed semi-circular arcs in both Nyquist and Cole-Cole plots; which may find some applications related to sensors and energy storage devices.","PeriodicalId":301303,"journal":{"name":"The European Physical Journal Applied Physics","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128420148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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