Thermal and Magnetic Properties of Cr_xMn_1−xAs Compounds

Abstract

Abstract The specific heat of magnetically ordered metallic Cr x Mn 1− x As crystals is determined in the temperature range 100 K < T < 500 K for nine compositions. Several anomalies in the specific heat are observed and assigned to carrier localization effects, spin fluctuations, and long range spin ordering. For the compositions x = 0.5, 0.4, 0.2, and 0.1 a sequence of two magnetic specific heat peaks are observed and interpreted in terms of a “magnetic alloy” model.