This article is cited in 1 paper

Phase transitions

Dielectric characteristics and phase transitions in Tl(InS$_2$)$_{1-x}$(FeSe$_2$)$_x$ solid solutions

A. U. Sheleg^a, V. G. Hurtavy^a, S. N. Mustafaeva^b, E. M. Kerimova^b, V. V. Shautsova<sup>a

a</sup> Scientific-Practical Materials Research Centre of NAS of Belarus
^b Institute of Physics Azerbaijan Academy of Sciences

Abstract: This paper reports on a study of the electrical conductivity and permittivity of Tl(InS$_2$)$_{1-x}$(FeSe$_2$)$_x$ crystals as functions of composition and temperature. It has been found that the permittivity decreases in magnitude, while the electrical conductivity increases with increasing $x$. Crystals Tl(InS$_2$)$_{1-x}$(FeSe$_2$)$_x$ have been observed to undergo a sequence of phase transitions characteristic of TlInS$_2$, which manifests itself in formation of anomalies in the $\sigma=f(T)$ and $\varepsilon=f(T)$ temperature dependences. It has been shown that as $x$ increases, the phase transition temperatures decrease, while the temperature region within which the incommensurate phase persists broadens slightly.

Received: 14.06.2011

 English version: Physics of the Solid State, 2012, 54:3, 607–610

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