Phase Separation of Bismuth Ferrite into Magnetite under Voltage Stressing

Details Phase Separation of Bismuth Ferrite into Magnetite under Voltage Stressing Phase Separation of Bismuth Ferrite into Magnetite under Voltage Stressing

2007-03-14

arxiv.org/abs/cond-mat/0703388v1

Applied Physics Letters, 90, 262908 (2007)

Physics

Condensed Matter

Materials Science

9 pages and 2 figures

Scientific paper

Micro-Raman studies show that under ~700 kV/cm of d.c. voltage stressing for
a few seconds, thin-film bismuth ferrite BiFeO3 phase separates into magnetite
Fe3O4. No evidence is found spectroscopically of hemite alpha-Fe2O3, maghemite
gamma-Fe2O3, or of Bi2O3. This relates to the controversy regarding the
magnitude of magnetization in BiFeO3.

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