Abstract:Internal friction and torsion strain spectra are compared for PMN-32PT crystal and it is found that the abrupt changes and random bouncing of the torsion strain are ascribed to a cubictetragonal transformation, which is accompanied by a large internal friction peak. This observation confirms that the cubictetragonal transformation of PMN-32PT crystal is a burst-type martensite transformation. We propose that it is caused by a parallel order-disorder transformation taken by the polar nanoregions (PNRs) inside P… Show more
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