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Ukr. J. Phys. 2015, Vol. 59, N 11, p.1078-1082
doi:10.15407/ujpe59.11.1078    Paper

Franiv V.A.1, Czapla Z.2, Dacko S.2, Franiv A.V.3, Kushnir O.S.1

1 Electronics Faculty, Ivan Franko Lviv National University
(107, Tarnavsky Str., Lviv 79017, Ukraine; e-mail: FranivVA@gmail.com)
2 Physics and Astronomy Faculty, Wroclaw University
(9, Max Born Sq., Wroclaw 50-204, Poland)
3 Physics Faculty, Ivan Franko Lviv National University
(8, Kyrylo and Mefodii Str., Lviv 79005, Ukraine)

Structural Transformations in Tl4HgI6 and Tl4CdI6 Crystals as Evidenced by Dielectric Properties and Conductivity

Section: Solid matter
Original Author's Text: English

Abstract:We present the results of experimental studies of the temperature-dependent real part of the dielectric constant and the electrical conductivity for Tl4HgI6 and Tl4CdI6 crystals. We show that the crystals under study manifest anomalous behaviors of the both physical properties in the same temperature regions. The latter facts, together with some other recent experimental data, can evidence the presence of structural transformations in those regions.

Key words: dielectric permittivity, electrical conductivity, ionic conductors, phase transformations.