12-04U

# 12-04U

By - Posted on 22 August 2012

UDC:
537.226.83/.86, 538.91
PACS:
77.84.-s, 64.60.Cn, 77.22.-d, 77.80.-e, 77.80.Bh, 77.65.Bn

Dielectric, piezoelectric, elastic and thermal properties of rochelle salt NaKC$_4$H$_4$O$_6$ $\cdot$ 4H$_2$O

I.R. Zachek
R.R. Levitskii

Recently proposed four-sublattice model for Rochelle salt is enhanced by taking into account piezoelectric coupling with shear strains $\varepsilon_4$, $\varepsilon_5$ and $\varepsilon_6$. Components of polarization vector and of static dielectric permittivity tensor for both mechanically clamped and free crystals, their piezoelectric characteristics and elastic moduli are derived in the mean field approximation. A proper choice of model parameters provides a good quantitative description of the available experimental data for ordinary and deuterated Rochelle salt for these characteristics.

Year:
2012
Pages:
33