Magnetism

Magnetic and electrical properties of intercalated phases in the (Cr, Cu)–HfSe$_2$ system

V. G. Pleshchev^a, N. V. Baranov^ab, D. A. Shishkin^b, A. V. Korolev^b, A. D. Gorlov<sup>a

a</sup> Ural State University, Ekaterinburg
^b Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences, Ekaterinburg

Abstract: It has been shown that intercalation of the HfSe$_2$ compound with chromium atoms results in an increase in the magnetic susceptibility and a decrease in the resistivity while retaining the semiconductor conductivity type. The Cr$_x$HfSe$_2$ compounds exhibit a paramagnetic behavior at temperatures above 2 K in the entire concentration range 0 $\le x\le$ 0.25. It has been revealed that an increase in the electron density due to additional introduction of copper can cause the appearance of a cluster-spin-glass-type state in Cr$_x$Cu$_y$HfSe$_2$ compounds. The data obtained indicate a large role of the indirect exchange interaction via conduction electrons in the formation of the magnetic state in layered intercalated compounds based on transition metal dichalcogenides.

Received: 05.04.2011

 English version: Physics of the Solid State, 2011, 53:10, 2054–2060

Bibliographic databases:

•