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Phase Separation of Bismuth Ferrite into Magnetite under Voltage Stressing

X. J. Lou·C. X. Yang·M. Zhang·J. F. Scott
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Abstract

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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X. J. Lou, C. X. Yang, M. Zhang, J. F. Scott. 2007-03-14. Phase Separation of Bismuth Ferrite into Magnetite under Voltage Stressing. https://doi.org/10.1063/1.2752724

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