Phase diagram of ZnAs2–MnAs system

The ZnAs₂–MnAs system, characterized by X-ray powder diffraction, differential thermal and microstructure studies, is of the eutectic type, with the coordinates of eutectic 73 mol% ZnAs₂ and 27 mol% MnAs and T_m = 716 °C. The solubility of MnAs in ZnAs₂ is lower 1 mol%. Alloys of ZnAs₂ with MnAs are ferromagnetic with T_c ≈ 318 K, their magnetization being increased with raising the MnAs content.