Abstract:
An analysis of the nature of the change in magnetic properties in the Cr–Cr–Cu–HfSe$_2$ system as a result of separate and joint intercalation of hafnium diselenide by chromium and copper atoms is presented. It is shown that a paramagnetic state is formed in three-component systems, which is described by the Curie-Weiss law. In Cu$_x$Cr$_{0.25}$HfSe$_2$ compounds, when approximating the temperature dependences of the magnetic susceptibility, the dependence of the effective magnetic moments in magnitude and the Curie paramagnetic temperature in magnitude and sign on the temperature range of approximation was noted. When this interval was shifted to higher temperatures, there was a monotonous decrease in the magnitude of the effective magnetic moments and a change in the sign of the paramagnetic Curie temperature from negative to positive. To describe this dependence, it is proposed to use alternative models for the formation of the magnetic state.
Keywords:hafnium diselenide, intercalation, magnetic susceptibility, effective magnetic moment.
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