Languages

  • English
  • Українська

Search

Syndicate

Syndicate content

03-11U

03-11U


By icmp_admin - Posted on 08 February 2012

UDC: 
536, 538.95
PACS: 
77.84.Fa, 77.65.Bn, 77.80.Bh, 77.22.Ch

Theory of related to the shear strain $u_6$ piezoelectric, elastic and dielectric properties of the KDP family crystals. Phase transition and piezoelectric effect in the KH$_2$PO$_4$ crystal

R.R. Levitskii
B.M. Lisnii

We propose an extension of the proton tunneling model in order to study dielectric, piezoelectric, and elastic properties of the KDP family crystals related to the shear strain $u_6$. In the four-particle cluster approximation for the short-range interactions and the mean field approximation for the long-range interactsion we explore the phase transition and piezoelectric effect in the KH$_2$PO$_4$ ferroelectrics. In the paraelectric phase the dielectric, piezoelectric, and elastic characteristics of the NH$_4$H$_2$PO$_4$ antiferroelectrics are calculated. At the proper choice of the theory parameters a good agreement between theoretical and experimental results is obtained.

Year: 
2003
Pages: 
30
Download: