Peculiarities of resistivity and isothermal magnetization of manganese arsenide at high pressure
Arslanov T. R.1, Khanov L. N.1, Ashurov G. G.1, Ril A. I.2
1Amirkhanov Institute of Physics, Daghestan Federal Research Center, Russian Academy of Sciences, Makhachkala, Russia
2Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
Email: arslanovt@gmail.com
This paper presents an experimental study of the resistivity and isothermal magnetization of a bulk crystal MnAs under hydrostatic pressure that focuses on the development of its magnetic P-T phase diagram. The pressure dependencies rho(P) and magnetization M(P) reveal signatures for the new ferromagnetic MnAs phase at P>2.3 GPa, different from the initial hexagonal one. The obtained results confirm the previous findings of neutron diffraction studies, suggesting the ferromagnetic MnAs phase with an orthorhombic structure above pressures of 2 GPa. It has been shown that at room temperature and high pressure ranges up to 8.5 GPa this phase remains stable. Keywords: manganese arsenide, magnetization, magnetostriction, resistivity, high pressure.
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