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http://hdl.handle.net/10773/19556
Título: | Jahn-Teller distortion relaxation across the LaMnO3+Delta phase diagram |
Autor: | Lopes, A. M. L. Amaral, V. S. Correia, J. G. Araujo, J. P. |
Palavras-chave: | ORDER-DISORDER TRANSITION OXYGEN-CONTENT FUEL-CELLS PEROVSKITE CATALYSTS LOCALIZATION LA1-XSRXMNO3 TEMPERATURE DIFFRACTION DEFECTS |
Data: | 2013 |
Editora: | IOP PUBLISHING LTD |
Resumo: | The evolution of the local Jahn-Teller distortion across the LaMnO3+Delta phase diagram was obtained using the perturbed angular correlation local probe technique. We found that upon doping, the local distortion decreases continuously with increasing doping and that no fully Jahn-Teller distorted Mn3+O6 octahedra are observed within the orthorhombic insulating phase. A local single-phase scenario is established for the orbital disordered orthorhombic crystallographic structure. We also show that the continuous weakening of the Jahn-Teller distortions is not limited to a single-phase environment and occurs in a similar manner within an undistorted rhombohedric matrix upon lowering the temperature. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/19556 |
DOI: | 10.1088/0953-8984/25/38/385602 |
ISSN: | 0953-8984 |
Versão do Editor: | 10.1088/0953-8984/25/38/385602 |
Aparece nas coleções: | CICECO - Artigos |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Jahn-Teller distortion relaxation across the LaMnO3+Delta phase diagram_10.10880953-89842538385602.pdf | 685.14 kB | Adobe PDF |
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