Ferromagnetic resonance in CdCrTe solid solution

Abstract

We studied sintered Cd1-xCrxTe solid solution obtained by melting of Cd and CrTe components with x=0.05 Cr mole fraction. Structural studies show homogenous large grain polycrystal structure of the alloy. Measurements of the temperature dependence of the electrical conductivity of the samples reveal the semi-metallic properties with electrical conductivity 0.22 Ohm-1cm-1. The ferromagnetic resonance (FMR) studies of the single crystal sample taken from the polycrystalline bulk were carried out at room temperature on X band epr spectrometer. The FMR spectra consist of one broad line with a high value of the g factor. The line is of the Lorentz shape with a moderate asymmetry. The angular dependence of the resonance field was analyzed based on the Kittel and Van Vleck theories. We compared the angular dependence of the resonance field with that arising from the Van Vleck theory containing first and second magnetic anisotropy energy approach. The results indicate ferromagnetic properties of the material at room temperature.