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The influence of transformation twins on the seismic-frequency elastic and anelastic properties of perovskite: dynamical mechanical analysis of single crystal LaAlO 3

Harrison, R J; Redfern, Simon


The low-frequency mechanical properties of single crystal LaAlO3 have been investigated as a function of temperature, frequency and applied force using the technique of dynamical mechanical analysis (DMA) in three-point bend geometry. LaAlO3 undergoes a cubic to rhombohedral phase transition below 550°C. The mechanical response in the low-temperature rhombohedral phase is shown to be dominated by the viscous motion of transformation twin domain walls, resulting in a factor of 10 decrease in the...[Show more]

CollectionsANU Research Publications
Date published: 2002
Type: Journal article
Source: Physics of the Earth and Planetary Interiors
DOI: 10.1016/S0031-9201(02)00190-5


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