Abstract
The dielectric properties of layered crystals of CuInP2(SexS1−x )6 solid solutions are studied at x = 0.02, 0.05, 0.20, and 0.40. At a low selenium content (x ≤ 0.05), the solid solutions undergo a transition to the phase with short-range polar order. This transition manifests itself as a diffuse maximum in the temperature dependence of the permittivity ε′(T). Ferroelectric ordering in the solid solutions under investigation is suppressed at x > 1. It is assumed that the structural disordering initiated by the substitution of atoms in the anion sublattice of the solid solutions at 0.1 < x < 0.75 leads to the formation of the state of structured glass. The dielectric relaxation dispersion observed in the radio-frequency range at temperatures of 80–140 K is associated with the freezing of the relaxation dynamics of individual copper atoms.
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Translated from Fizika Tverdogo Tela, Vol. 47, No. 9, 2005, pp. 1670–1675.
Original Russian Text Copyright © 2005 by Ma\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \)or, Vrabel’, Prits, Korda, Gurzan, Vysochanski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \).
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Maior, M.M., Vrabel, V.T., Prits, I.P. et al. Dielectric properties of CuInP2(SexS1−x )6 solid solutions. Phys. Solid State 47, 1734–1739 (2005). https://doi.org/10.1134/1.2045360
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DOI: https://doi.org/10.1134/1.2045360