High-pressure structural and electrical properties of pyrochlore: Enhanced octahedral distortions and electrical resistance of La2Sn2O7
The effect of high pressure on the structural and electrical properties of La2Sn2O7 have been studied using Raman spectroscopy, in situ angle dispersive X-ray diffraction (ADXRD) and alternating current (AC) impedance spectroscopy. High-pressure Raman spectroscopy illustrates the enhanced distortion...
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Elsevier
2025-01-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424028060 |
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| author | Shufan Jia H. Saqib Daniel Errandonea Yuxin Hu Bin Zeng Xiangyu Chen Alfonso Munoz Silvana Radescu Andres Mujica Yongsheng Zhao S. Rahman Ning Dai |
| author_facet | Shufan Jia H. Saqib Daniel Errandonea Yuxin Hu Bin Zeng Xiangyu Chen Alfonso Munoz Silvana Radescu Andres Mujica Yongsheng Zhao S. Rahman Ning Dai |
| author_sort | Shufan Jia |
| collection | DOAJ |
| description | The effect of high pressure on the structural and electrical properties of La2Sn2O7 have been studied using Raman spectroscopy, in situ angle dispersive X-ray diffraction (ADXRD) and alternating current (AC) impedance spectroscopy. High-pressure Raman spectroscopy illustrates the enhanced distortions of SnO6 octahedron with pressure. ADXRD patterns, up to the highest pressure (30.2 GPa) have been refined using the Rietveld method. Furthermore, AC impedance spectroscopy measurements revealed that the resistance of La2Sn2O7 increases continuously with pressure. On the other hand, first-principles calculations were also employed to investigate the electronic properties and structural evolution of pyrochlore La2Sn2O7, providing a theoretical basis for the interpretation of the experimental observation that pyrochlore La2Sn2O7 becomes more insulating under compression. The combined experimental and theoretical results suggest that the cubic phase of La2Sn2O7 remains stable under high pressure. Pyrochlore La2Sn2O7 is an important material due to its potential applications in various fields, including solid oxide fuel cells and nuclear waste immobilization, owing to its structural stability and electronic properties. Understanding its behaviour under high pressure is crucial for optimizing its performance in these applications. |
| format | Article |
| id | doaj-art-9581f455543e49df987e48669e983d03 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-9581f455543e49df987e48669e983d032025-01-19T06:25:06ZengElsevierJournal of Materials Research and Technology2238-78542025-01-0134175183High-pressure structural and electrical properties of pyrochlore: Enhanced octahedral distortions and electrical resistance of La2Sn2O7Shufan Jia0H. Saqib1Daniel Errandonea2Yuxin Hu3Bin Zeng4Xiangyu Chen5Alfonso Munoz6Silvana Radescu7Andres Mujica8Yongsheng Zhao9S. Rahman10Ning Dai11School of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, UCAS, China; Research Center for Frontier Fundamental Studies, Zhejiang Laboratory, Hangzhou, 311100, ChinaCenter for High Pressure Science and Technology Advanced Research, Shanghai, 201203, China; Department of Physics, Govt. Graduate College Satellite Town, Rawalpindi, 5300, PakistanDepartamento de Física Aplicada-ICMUV, MALTA Consolider Team, Universidad de Valencia, Edificio de Investigación, C/Dr. Moliner 50, Burjassot, 46100, Valencia, SpainSchool of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, UCAS, ChinaResearch Center for Frontier Fundamental Studies, Zhejiang Laboratory, Hangzhou, 311100, ChinaSchool of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, UCAS, ChinaDepartamento de Física, MALTA Consolider Team, Universidad de La Laguna, San Cristóbal de La Laguna, Tenerife, E-38200, SpainDepartamento de Física, MALTA Consolider Team, Universidad de La Laguna, San Cristóbal de La Laguna, Tenerife, E-38200, SpainDepartamento de Física, MALTA Consolider Team, Universidad de La Laguna, San Cristóbal de La Laguna, Tenerife, E-38200, SpainCenter for High Pressure Science and Technology Advanced Research, Shanghai, 201203, ChinaSchool of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, UCAS, China; Corresponding author.School of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, UCAS, China; State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai, 200083, China; Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou, 213164, China; Corresponding author. School of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, UCAS, China.The effect of high pressure on the structural and electrical properties of La2Sn2O7 have been studied using Raman spectroscopy, in situ angle dispersive X-ray diffraction (ADXRD) and alternating current (AC) impedance spectroscopy. High-pressure Raman spectroscopy illustrates the enhanced distortions of SnO6 octahedron with pressure. ADXRD patterns, up to the highest pressure (30.2 GPa) have been refined using the Rietveld method. Furthermore, AC impedance spectroscopy measurements revealed that the resistance of La2Sn2O7 increases continuously with pressure. On the other hand, first-principles calculations were also employed to investigate the electronic properties and structural evolution of pyrochlore La2Sn2O7, providing a theoretical basis for the interpretation of the experimental observation that pyrochlore La2Sn2O7 becomes more insulating under compression. The combined experimental and theoretical results suggest that the cubic phase of La2Sn2O7 remains stable under high pressure. Pyrochlore La2Sn2O7 is an important material due to its potential applications in various fields, including solid oxide fuel cells and nuclear waste immobilization, owing to its structural stability and electronic properties. Understanding its behaviour under high pressure is crucial for optimizing its performance in these applications.http://www.sciencedirect.com/science/article/pii/S2238785424028060High-pressureRamanImpedanceFirst-principlesPhase stability |
| spellingShingle | Shufan Jia H. Saqib Daniel Errandonea Yuxin Hu Bin Zeng Xiangyu Chen Alfonso Munoz Silvana Radescu Andres Mujica Yongsheng Zhao S. Rahman Ning Dai High-pressure structural and electrical properties of pyrochlore: Enhanced octahedral distortions and electrical resistance of La2Sn2O7 Journal of Materials Research and Technology High-pressure Raman Impedance First-principles Phase stability |
| title | High-pressure structural and electrical properties of pyrochlore: Enhanced octahedral distortions and electrical resistance of La2Sn2O7 |
| title_full | High-pressure structural and electrical properties of pyrochlore: Enhanced octahedral distortions and electrical resistance of La2Sn2O7 |
| title_fullStr | High-pressure structural and electrical properties of pyrochlore: Enhanced octahedral distortions and electrical resistance of La2Sn2O7 |
| title_full_unstemmed | High-pressure structural and electrical properties of pyrochlore: Enhanced octahedral distortions and electrical resistance of La2Sn2O7 |
| title_short | High-pressure structural and electrical properties of pyrochlore: Enhanced octahedral distortions and electrical resistance of La2Sn2O7 |
| title_sort | high pressure structural and electrical properties of pyrochlore enhanced octahedral distortions and electrical resistance of la2sn2o7 |
| topic | High-pressure Raman Impedance First-principles Phase stability |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424028060 |
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