Structural and electronic phase transitions in Sr1-xCe xMnO3 perovskites
The structures of eight members of the series Sr1-xCe xMnO3 with 0.075≤x≤0.4 have been established using synchrotron X-ray powder diffraction. These exhibit the sequence of structures cubic/Pm3̄m x≈0.08/→ tetragonal/14/mcm x≈0.35/rarr; orthorhombic/Imma with increasing Ce content. Unusual peak broad...
| Main Authors: | , , , , , |
|---|---|
| Format: | Journal article |
| Language: | English |
| Published: |
2008
|
| _version_ | 1826275014866894848 |
|---|---|
| author | Kennedy, B Saines, P Zhou, Q Zhang, Z Matsuda, M Miyake, M |
| author_facet | Kennedy, B Saines, P Zhou, Q Zhang, Z Matsuda, M Miyake, M |
| author_sort | Kennedy, B |
| collection | OXFORD |
| description | The structures of eight members of the series Sr1-xCe xMnO3 with 0.075≤x≤0.4 have been established using synchrotron X-ray powder diffraction. These exhibit the sequence of structures cubic/Pm3̄m x≈0.08/→ tetragonal/14/mcm x≈0.35/rarr; orthorhombic/Imma with increasing Ce content. Unusual peak broadening due to domainwall scattering is observed near the composition-induced first-order cubic-tetragonal transition. The temperature dependence of the structures for three examples x = 0.1, 0.2 and 0.35 is described. For the x = 0.1 and 0.35 samples evidence for a first-order loss of the orbital ordering associated with a cooperative Jahn-Teller distortion is presented. The onset of the orbitally disordered state is accompanied by a discontinuous reduction in cell volume. © 2008 Elsevier Inc. All rights reserved. |
| first_indexed | 2024-03-06T22:52:15Z |
| format | Journal article |
| id | oxford-uuid:5f2f526b-8d5d-4800-908c-1c02b4cc52a6 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T22:52:15Z |
| publishDate | 2008 |
| record_format | dspace |
| spelling | oxford-uuid:5f2f526b-8d5d-4800-908c-1c02b4cc52a62022-03-26T17:45:18ZStructural and electronic phase transitions in Sr1-xCe xMnO3 perovskitesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:5f2f526b-8d5d-4800-908c-1c02b4cc52a6EnglishSymplectic Elements at Oxford2008Kennedy, BSaines, PZhou, QZhang, ZMatsuda, MMiyake, MThe structures of eight members of the series Sr1-xCe xMnO3 with 0.075≤x≤0.4 have been established using synchrotron X-ray powder diffraction. These exhibit the sequence of structures cubic/Pm3̄m x≈0.08/→ tetragonal/14/mcm x≈0.35/rarr; orthorhombic/Imma with increasing Ce content. Unusual peak broadening due to domainwall scattering is observed near the composition-induced first-order cubic-tetragonal transition. The temperature dependence of the structures for three examples x = 0.1, 0.2 and 0.35 is described. For the x = 0.1 and 0.35 samples evidence for a first-order loss of the orbital ordering associated with a cooperative Jahn-Teller distortion is presented. The onset of the orbitally disordered state is accompanied by a discontinuous reduction in cell volume. © 2008 Elsevier Inc. All rights reserved. |
| spellingShingle | Kennedy, B Saines, P Zhou, Q Zhang, Z Matsuda, M Miyake, M Structural and electronic phase transitions in Sr1-xCe xMnO3 perovskites |
| title | Structural and electronic phase transitions in Sr1-xCe xMnO3 perovskites |
| title_full | Structural and electronic phase transitions in Sr1-xCe xMnO3 perovskites |
| title_fullStr | Structural and electronic phase transitions in Sr1-xCe xMnO3 perovskites |
| title_full_unstemmed | Structural and electronic phase transitions in Sr1-xCe xMnO3 perovskites |
| title_short | Structural and electronic phase transitions in Sr1-xCe xMnO3 perovskites |
| title_sort | structural and electronic phase transitions in sr1 xce xmno3 perovskites |
| work_keys_str_mv | AT kennedyb structuralandelectronicphasetransitionsinsr1xcexmno3perovskites AT sainesp structuralandelectronicphasetransitionsinsr1xcexmno3perovskites AT zhouq structuralandelectronicphasetransitionsinsr1xcexmno3perovskites AT zhangz structuralandelectronicphasetransitionsinsr1xcexmno3perovskites AT matsudam structuralandelectronicphasetransitionsinsr1xcexmno3perovskites AT miyakem structuralandelectronicphasetransitionsinsr1xcexmno3perovskites |