Phase transitions in BaTiO3: a high-pressure neutron diffraction study

Hayward, S. A. and Redfern, S. A. T. and Stone, H. J. and Tucker, M. G. and Whittle, K. R. and Marshall, W. G. (2005) Phase transitions in BaTiO3: a high-pressure neutron diffraction study. Zeitschrift für Kristallographie, 220. pp. 735-739. DOI

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The sequence of ferroelectric phase transitions (Pm3m––P4mm––Amm2) in BaTiO3 has been studied as a function of temperature (298 K – 130 K) at a fixed pressure (3.2 GPa). The same sequence of transitions is observed as for ambient pressures, but the transition temperatures are reduced. The spontaneous strains of the noncubic phases are determined. Whilst the structure of the tetragonal phase at high pressure is qualitatively similar to the ambient structure, both the spontaneous strain and the Ti displacement are smaller in the high pressure structure than the ambient structure.

Item Type: Article
Uncontrolled Keywords: 2005 AREP IA46 2005 P IA48
Subjects: 03 - Mineral Sciences
Divisions: 03 - Mineral Sciences
Journal or Publication Title: Zeitschrift für Kristallographie
Volume: 220
Page Range: pp. 735-739
Identification Number:
Depositing User: Sarah Humbert
Date Deposited: 30 Mar 2011 15:48
Last Modified: 23 Jul 2013 09:58

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