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

Mael Guennou; Pierre Bouvier; Raphaël Haumont; Gaston Garbarino; Jens Kreisel

doi:10.1080/01411594.2011.552014

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

Materials Science 2011-05-16 v1

Authors: Mael Guennou , Pierre Bouvier , Raphaël Haumont , Gaston Garbarino , Jens Kreisel

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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.

Keywords

BiFeO3 high-pressure phase transition hydrostatic conditions non-hydrostatic stress X-ray diffraction diamond-anvil cell

Cite

@article{arxiv.1105.2676,
  title  = {High-pressure phase transitions in BiFeO3: hydrostatic vs. non-hydrostatic conditions},
  author = {Mael Guennou and Pierre Bouvier and Raphaël Haumont and Gaston Garbarino and Jens Kreisel},
  journal= {arXiv preprint arXiv:1105.2676},
  year   = {2011}
}

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6 pages, 4 figures

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

Abstract

Keywords

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