High-pressure phase transitions in BiFeO3: hydrostatic vs. non-hydrostatic conditions

Abstract

We report high-pressure x-ray diffraction experiments on BiFeO3 (BFO) single crystals in diamond-anvil cells up to 14 GPa. Two data sets are compared, one in hydrostatic conditions, with helium used as pressure-transmitting medium, and the other in non-hydrostatic conditions, with silicon oil as pressure-transmitting medium. It is shown that the crystal undergoes different phase transitions in the two cases, highlighting the high sensitivity of BFO to non-hydrostatic stress. Consequences for the interpretation of high-pressure structural studies are discussed.

6 pages, 4 figures

References in corpus (6)

• Effect of high pressure on multiferroic BiFeO3
• Pressure-temperature phase diagram of SrTiO3 up to 53 GPa
• High-pressure investigations of CaTiO3 up to 60 GPa using X-ray diffraction and Raman spectroscopy
• High pressure phases in highly piezoelectric Pb(Zr0.52Ti0.48)O3
• High-pressure study of X-ray diffuse scattering in ferroelectric perovskites
• Phase transitions and ferroelectrics: revival and the future in the field

Cited by in corpus (6)

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• Bismuth-based perovskites as multiferroics
• Pressure-induced structural phase transition and suppression of Jahn-Teller distortion in the quadruple perovskite structure
• Optical spectroscopy on the photo-response in multiferroic BiFeO${}_3$ at high pressure