Metals

Peculiarities of resistivity and isothermal magnetization of manganese arsenide at high pressure

T. R. Arslanov^a, L. N. Khanov^a, G. G. Ashurov^a, A. I. Ril<sup>b

a</sup> Daghestan Institute of Physics after Amirkhanov, Makhachkala, Russia
^b Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow, Russia

Abstract: 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.

Received: 22.09.2023
Revised: 29.11.2023
Accepted: 30.11.2023

DOI: 10.61011/FTT.2024.01.56927.211

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