Condensed Matter Physics, 1996, No 8, p. 129-156, English
<br><A HREF="https://doi.org/10.5488/CMP.8.129"> DOI:10.5488/CMP.8.129</A>

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<B>Tutle: </B>HYDROSTATIC PRESSURE INFLUENCE ON PHASE TRANSITION AND PHYSICAL
PROPERTIES OF KD<sub>2</sub>PO<sub>4</sub>-TYPE FERROELECTRICS<BR>
<B>Authors: </B>I.V.Stasyuk, R.R.Levitskii, I.R.Zachek, A.P.Moina, A.S.Duda
(Institute for Condensed Matter  Physics
Ukrainian National Academy of Sciences
1 Svientsitskii St., UA-290011 Lviv-11, Ukraine)

<p>
<blockquote>
On the basis of proposed earlier model the effects of applied
hydrostatic pressure on the physical properties of DKDP type
crystals are studied. Within the cluster approximation for proton
model the dielectric, thermal and elastic characteristics of
considered crystals are calculated. Detailed numerical analysis of
obtained results is performed.   It is shown that under the proper
choice of the theory parameters, a satisfactory description of
experimental results for the pressure dependencies of spontaneous
polarization, static dielectric permittivities and transition
temperature is obtained. To explain the experimental
determined behaviour of elastic constants the anharmonic effects must
be taken into account.
</blockquote>
<B>Comments: </B>Refs. 48, Tabs. 2, Figs. 12.<BR>

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