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

Stuart A. Hayward; Simon A.T. Redfern; Howard J. Stone; Matthew G. Tucker; Karl R. Whittle; William G. Marshall

doi:10.1524/zkri.220.8.735.67077

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

Stuart A. Hayward, Simon A.T. Redfern, Howard J. Stone, Matthew G. Tucker, Karl R. Whittle, William G. Marshall

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

The sequence of ferroelectric phase transitions (Pm3̄m-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 non-cubic 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.

Original language	English
Pages (from-to)	735-739
Number of pages	5
Journal	Zeitschrift fur Kristallographie
Volume	220
Issue number	8
DOIs	https://doi.org/10.1524/zkri.220.8.735.67077
State	Published - 2005
Externally published	Yes

Keywords

Ferroelectric
High pressure
Neutron diffraction
Phase transitions

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10.1524/zkri.220.8.735.67077

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title = "Phase transitions in BaTiO3: A high-pressure neutron diffraction study",

abstract = "The sequence of ferroelectric phase transitions (Pm{\=3}m-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 non-cubic 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.",

keywords = "Ferroelectric, High pressure, Neutron diffraction, Phase transitions",

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T2 - A high-pressure neutron diffraction study

AU - Hayward, Stuart A.

AU - Redfern, Simon A.T.

AU - Stone, Howard J.

AU - Tucker, Matthew G.

AU - Whittle, Karl R.

AU - Marshall, William G.

PY - 2005

Y1 - 2005

N2 - The sequence of ferroelectric phase transitions (Pm3̄m-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 non-cubic 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.

AB - The sequence of ferroelectric phase transitions (Pm3̄m-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 non-cubic 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.

KW - Ferroelectric

KW - High pressure

KW - Neutron diffraction

KW - Phase transitions

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M3 - Article

AN - SCOPUS:22444439290

SN - 0044-2968

VL - 220

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EP - 739

JO - Zeitschrift fur Kristallographie

JF - Zeitschrift fur Kristallographie

IS - 8

ER -

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

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Keywords

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