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Electronic properties of semiconductors

Magnetic properties of the FeIn$_2$S$_4$ ternary-compound crystals

I. V. Bondar'^a, S. V. Trukhanov<sup>b

a</sup> Belarussian State University of Computer Science and Radioelectronic Engineering
^b Scientific-Practical Materials Research Centre of NAS of Belarus

Abstract: Crystals of the ternary compound FeIn$_2$S$_4$ are grown by directional crystallization of a melt (the horizontal Bridgman method). Composition of the crystals and their crystal structure are determined. Magnetic properties of the FeIn$_2$S$_4$ crystals are studied in the temperature range 4–310 K in magnetic fields of 0–140 kOe. It is shown that the crystals under study are paramagnets up to $\sim$12 K and their specific magnetic moment monotonically increases with decreasing temperature. The antiferromagnetic character of indirect interactions between Fe$^{2+}$ cations is established. The most probable causes and the mechanism of the formation of the magnetic state in the FeIn$_2$S$_4$ crystals are discussed.

Received: 22.12.2010
Accepted: 28.12.2010

 English version: Semiconductors, 2011, 45:7, 861–864

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