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Mechanical double loop behavior in BaTiO3: Stress induced paraelastic to ferroelastic phase transformation

Daniels, John E. and Picht, Gunnar and Kimber, Simon and Webber, Kyle G. (2013):
Mechanical double loop behavior in BaTiO3: Stress induced paraelastic to ferroelastic phase transformation.
In: Applied Physics Letters, pp. 122902(1-4), 103, (12), ISSN 00036951,
[Online-Edition: http://dx.doi.org/10.1063/1.4821446],
[Article]

Abstract

The structural origin of the mechanical double loop behavior of polycrystalline BaTiO3 at temperatures just above the Curie point has been investigated using in situ high-energy synchrotron x-ray diffraction during uniaxial compressive mechanical loading. The results show a stress-induced transition from the high temperature paraelastic cubic phase to a ferroelastic tetragonal phase with a domain texture close to the saturated state. The nature of the observed stress-induced phase transition was influenced by the proximity of the temperature to the Curie point. With increasing temperature above the Curie point, the transition stress increased while the rate of the transition decreased.

Item Type: Article
Erschienen: 2013
Creators: Daniels, John E. and Picht, Gunnar and Kimber, Simon and Webber, Kyle G.
Title: Mechanical double loop behavior in BaTiO3: Stress induced paraelastic to ferroelastic phase transformation
Language: English
Abstract:

The structural origin of the mechanical double loop behavior of polycrystalline BaTiO3 at temperatures just above the Curie point has been investigated using in situ high-energy synchrotron x-ray diffraction during uniaxial compressive mechanical loading. The results show a stress-induced transition from the high temperature paraelastic cubic phase to a ferroelastic tetragonal phase with a domain texture close to the saturated state. The nature of the observed stress-induced phase transition was influenced by the proximity of the temperature to the Curie point. With increasing temperature above the Curie point, the transition stress increased while the rate of the transition decreased.

Journal or Publication Title: Applied Physics Letters
Volume: 103
Number: 12
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Elektromechanik von Oxiden
11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 14 Apr 2014 11:10
Official URL: http://dx.doi.org/10.1063/1.4821446
Identification Number: doi:10.1063/1.4821446
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