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Distribution Functions and Thermodynamical Properties of KD 2 PO 4 and ND 4 D 2 PO 4 Type Crystals
Author(s) -
Levitskii R. R.,
Korynevskii N. A.,
Stasyuk I. V.
Publication year - 1978
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220880106
Subject(s) - phase transition , ferroelectricity , type (biology) , distribution (mathematics) , dielectric , range (aeronautics) , condensed matter physics , deuterium , transversal (combinatorics) , phase (matter) , tensor (intrinsic definition) , cluster (spacecraft) , distribution function , thermodynamics , physics , materials science , chemistry , mathematics , mathematical analysis , atomic physics , quantum mechanics , pure mathematics , ecology , computer science , composite material , biology , programming language
In the cluster approximation, taking into account long‐range correlations, the distribution functions of deuterated ferroelectric compounds of the orthophosphate type are calculated. The behaviour of the single and pair function near the phase transition point for both the KD 2 PO 4 and ND 4 D 2 PO 4 type structures is analysed. It is shown that expressions for the longitudinal and transversal components of the dielectric susceptibility tensor are in a qualitative coincidence with the experiment in the phase transition region. Phase transition and some thermodynamical properties of deuterated orthophosphates are studied on the basis of the results obtained. It is shown that the long‐range interaction is necessary to form antipolarization states.