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https://hdl.handle.net/2445/10635
Title: | Charge and Zener polaron order in Bi0.75Sr0.25MnO3 |
Author: | Frontera Beccaria, Carlos García Muñoz, José Luis Aranda, Miguel A. G. Hervieu, Maryvonne Ritter, Clemens Mañosa, Lluís Garcia Capdevila, Xavier Calleja Lázaro, Alberto |
Keywords: | Estructura electrònica Química quàntica Electrònica quàntica Electronic structure of bulk materials Quantum electronics |
Issue Date: | 2003 |
Publisher: | The American Physical Society |
Abstract: | We have characterized the RT structure of Bi0.75Sr0.25MnO3 by means of electron diffraction, synchrotron x-ray, and neutron powder diffraction. These data evidence that a;b;A2ap and c;2ap average structure presents a modulation that doubles the a and c lattice parameters. The temperature evolution of this compound above RT has been investigated using magnetization, calorimetry measurements, and neutron powder diffraction. These data reveal that the superstructure disappears above ;575 K where a structural transition takes place. Susceptibility data show that, concomitant to the formation of the superstructure ~on cooling!, there is an enhancement of the effective paramagnetic moment as has also been found in other Bi-(Sr,Ca)MnO3 bismuth manganites. The observed features and cell evolution signals that a new type of charge and polaron ordering occurs at this composition. |
Note: | Reproducció digital del document publicat en format paper, proporcionada per PROLA i https://doi.org/10.1103/PhysRevB.68.134408 |
It is part of: | Physical Review B, 2003, vol. 68, núm. 13, p. 134408-1-134408-9 |
URI: | https://hdl.handle.net/2445/10635 |
Related resource: | https://doi.org/10.1103/PhysRevB.68.134408 |
ISSN: | 0163-1829 |
Appears in Collections: | Articles publicats en revistes (Ciència dels Materials i Química Física) |
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