Journal of Physical Studies 16(4), Article 4702 [11 pages] (2012)
DOI: https://doi.org/10.30970/jps.16.4702

THE EFFECT OF HYDROSTATIC AND UNIAXIAL PRESSURES ON PHASE TRANSITION AND PHYSICAL CHARACTERISTICS OF QUASI-ONE-DIMENSIONAL CsH₂PO₄ TYPE FERROELECTRICS

R. R. Levitsky¹, I. R. Zachek², A. S. Vdovych¹
¹Institute for Condensed Matter Physics of the National Academy of Sciences of Ukraine
1, Svientsitskii St., Lviv, UA--79011, Ukraine
²Lviv Polytechnic National University
12 Bandery St., Lviv, UA--79013, Ukraine

Within a modified proton ordering model of quasi-one-dimensional CsH$_2$PO$_4$ type ferroelectrics with hydrogen bonds with taking into account linear on strains $ε_i$ and $ε_5$ contributions into the energy of a proton system, but without taking into account the tunneling within the two-particle cluster approximation the effect of hydrostatic and uniaxial pressures on phase transition and physical characteristics of quasi-one-dimensional CsH$_2$PO$_4$ type ferroelectrics are studied. At the proper set of parameters a good quantitative description of the corresponding experimental data for those crystals is obtained.

PACS number(s): 77.84.-s, 64.60.Cn, 77.22.-d, 77.80.-e, 77.80.Bh, 77.65.Bn

THE EFFECT OF HYDROSTATIC AND UNIAXIAL PRESSURES ON PHASE TRANSITION AND PHYSICAL CHARACTERISTICS OF QUASI-ONE-DIMENSIONAL CsH2PO4 TYPE FERROELECTRICS

THE EFFECT OF HYDROSTATIC AND UNIAXIAL PRESSURES ON PHASE TRANSITION AND PHYSICAL CHARACTERISTICS OF QUASI-ONE-DIMENSIONAL CsH₂PO₄ TYPE FERROELECTRICS