Acoustic anomalies during ferroelastic phase transitions in conducting piezomagnetics
I. M. VitebskiĭScientific-Industrial Complex “Monokristallreaktiv,” Kharkov; Physicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, DonetskA. S. Zel’tserScientific-Industrial Complex “Monokristallreaktiv,” Kharkov; Physicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, DonetskL. M. LavrinenkoScientific-Industrial Complex “Monokristallreaktiv,” Kharkov; Physicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, DonetskV. L. SobolevScientific-Industrial Complex “Monokristallreaktiv,” Kharkov; Physicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Donetsk
ABI
Abstract
The main critical anomalies during ferroelastic phase transitions are mainly observed in the behavior of the elastic properties of crystals. A sharp decrease in the transverse sound velocity in certain symmetric directions is observed, and it is shown that the linear piezomagnetic effect may considerably change the critical behavior of softening sound in conducting crystals. In particular, the velocity of sound remains finite at the critical point.
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