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Pseudo‐Spin Motion in Solid Solutions of the Type of the Type K(H 1− x D x ) 2 PO 4
Author(s) -
Schreiber J.
Publication year - 1977
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.2220810140
Subject(s) - condensed matter physics , type (biology) , ferroelectricity , solid solution , dipole , dielectric , scattering , physics , raman scattering , polarization (electrochemistry) , curie temperature , raman spectroscopy , chemistry , quantum mechanics , ecology , ferromagnetism , biology , organic chemistry
Within the pseudo‐spin model which includes occupation dependent tunnelling frequencies Γ i , dipole moments μ i , and interactions I ij ∼ μ i t ij μ j , the dielectric susceptibility is obtained by a linearized Bloch equation for ferroelectric solid solutions of the type K(H 1− x D x ) 2 PO 4 . The single site and the Bethe‐Peierls version of CPA are used to solve the disorder problem. Using a suitable set of ingoing parameters the Curie temperature, the spontaneous polarization, the intensity of Raman scattering, and the static susceptibility are calculated for various deuterium concentrations, x , and discussed in relation to experiments.