04-08U
04-08U
UDC:
535.35, 538.935
PACS:
31.70.H, 42.50.-p, 05.70.Ln, 78.20.-e, 82.20.Mj, 82.20.Rp Piezoelectric resonance and sound attenuation in Rochelle salt crystals
Within the framework of two-sublattice Mitsui model with taking into account the piezoelectric interaction with the shear strain $\varepsilon _4$, a dynamic dielectric response of Rochelle salt is considered. Experimentally observed phenomena of crystal clamping by high frequency electric field, piezoelectric resonance and microwave dispersion are described. Ultrasound velocity and attenuation are calculated, peculiarities of their temperature dependence at the Curie points are described. Existence of a cut-off frequency in the frequency dependence of attenuation is predicted.
Submitted:
Condensed Matter Physics
Year:
2004
Pages:
19
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