Título:
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Growth and magnetic properties of multiferroic LaxBi1-xMnO3 thin films
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Autor/a:
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Gajek, M.; Bibes, Manuel; Wyczisk, F.; Varela Fernández, Manuel, 1956-; Fontcuberta i Griñó, Josep; Barthélémy, Agnès
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Otros autores:
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Universitat de Barcelona |
Abstract:
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A comparative study of LaxBi1-xMnO3 thin films grown on SrTiO3 substrates is reported. It is shown that these films grow epitaxially in a narrow pressure-temperature range. A detailed structural and compositional characterization of the films is performed within the growth window. The structure and the magnetization of this system are investigated. We find a clear correlation between the magnetization and the unit-cell volume that we ascribe to Bi deficiency and the resultant introduction of a mixed valence on the Mn ions. On these grounds, we show that the reduced magnetization of LaxBi1-xMnO3 thin films compared to the bulk can be explained quantitatively by a simple model, taking into account the deviation from nominal composition and the Goodenough-Kanamori-Anderson rules of magnetic interactions. |
Materia(s):
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-Pel·lícules fines -Propietats magnètiques -Magnetic properties and materials |
Derechos:
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(c) The American Physical Society, 2007
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Tipo de documento:
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Artículo Artículo - Versión publicada |
Editor:
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The American Physical Society
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