Correlation of acoustic and thermal anomalies in ferroelectric crystals
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The Pippard-Janovec relations are derived for correlating the anomalous elastic coefficient and the anomalous specific heat near the phase transitions of ferroelectric crystals. These relations are verified in the case of ferroelectric triglycine selenate crystal.
KeywordsPippard-Janovec relations ultrasonic velocity ferroelectrics triglycine selenate
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