Synthesis and Magnetic Properties of MnAs0.93P0.07 Solid Solution

Single crystals of manganese arsenide and the MnAs0.93P0.07 solid solution based on it have been synthesized using the Stockbargar–Bridgman method. The crystal structure and composition of the samples have been determined using X-ray diffraction and X-ray spectral analysis. Calculations of the electronic structure and interatomic exchange integrals in the MnAs0.93P0.07 solid solution and pure MnAs revealed minor differences in the magnetic states of the atoms and the total energy of the crystal. The introduction of phosphorus led to compression of the manganese arsenide crystal lattice and a decrease in the magnetostructural phase transition temperature to 285 K. The maximum change in magnetic entropy for MnAs0.93P0.07 with a magnetic field changing from 0 to 8 T was ~36 J/(kg K).