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Type: Artigo
Title: Parasitic phases at the origin of magnetic moment in BiFeO3 thin films grown by low deposition rate RF sputtering
Author: Mori, T. J. A.
Mouls, C. L.
Morgado, F. F.
Schio, P.
Cezar, J. C.
Abstract: A series of epitaxial BiFeO3 thin films has been grown under high partial pressure in a pure O-2 atmosphere, which leads to a low deposition rate. The samples grown under these conditions have presented an evolution of the quality of the epitaxy as the deposition temperature increases, however, spurious beta-Bi2O3 and supertetragonal BiFeO3 phases are present in the films grown at higher temperatures. The presence of gamma-Fe2O3 is reported in one growing condition, and has been attributed to the origin of hysteretic ferromagnetic behavior. A second kind of magnetism, with higher magnetic moment and anhysteretic behaviour, is attributed to the presence of mixed phases of BiFeO3.
Subject: Compostos de bismuto
Filmes finos
Bismuth compounds
Thin films
Country: Estados Unidos
Editor: AIP Publishing
Rights: aberto
Identifier DOI: 10.1063/1.5003764
Date Issue: 2017
Appears in Collections:IFGW - Artigos e Outros Documentos

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