04-08U

# 04-08U

By - Posted on 08 February 2012

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

A.P. Moina
R.R. Levitskii
I.R. Zachek

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.

Year:
2004
Pages:
19