Abstract
A study is made of the effect of temperature and hydrostatic pressure on the permittivity, forbidden-band width, electrical conductivity, and photoconductivity of crystals of Sn2P2S6. The empirical results obtained indicate that a new phase-transformation line exists on the p-T diagram of Sn2P2S6 p > 0.17 GPa. This phase transformation is evidently a second-order transition, separating a paraelectric, proportionate phase from an intermediate, possibly nonproportionate phase. The results also indicate similarity of the p-T diagram of Sn2P2S6 to the x-T diagrams of ferroelectric solid solutions of Sn2P2(SexS1−x)6.
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Yu. I. Tyagur, E. I. Gerzanich, and M. I. Gurzan, in: Physics and Engineering of High Pressures [in Russian], Vol. 17, Naukova Dumka, Kiev (1984), pp. 90–93.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 9, pp. 57–60, September, 1985.
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Tyagur, Y.I., Gerzanich, E.I. & Slivka, A.G. New phase-transformation line and intermediate phase in Sn2P2S6 . Soviet Physics Journal 28, 739–741 (1985). https://doi.org/10.1007/BF00895526
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DOI: https://doi.org/10.1007/BF00895526