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JOURNALS // Fizika Tverdogo Tela // Archive

Fizika Tverdogo Tela, 2024 Volume 66, Issue 12, Pages 2220–2224 (Mi ftt10539)

Metals

Magnetic phase temperature-pressure diagram of FeRh alloy with Fe$_{94}$Rh$_6$ phase

T. R. Arslanov, A. A. Amirov, L. N. Khanov

Daghestan Institute of Physics after Amirkhanov

Abstract: The $T$$P$ magnetic phase diagram of the Fe$_{50}$Rh$_{50}$ alloy with the Fe$_{94}$Rh$_6$ iron-rich phase has been studied based on the resistivity measurements under hydrostatic pressure. The Neel temperature $T_N\approx$ 370 K up to pressures of 2 GPa shows a regular displacement with a positive pressure coefficient of +42.3 K/GPa. The effect of the Fe$_{94}$Rh$_6$ phase on the $T_N$ is revealed at high pressures ($P>$ 3.5 GPa), at which the triple point region on the phase diagram is rounded due to the possible formation of a new high-pressure antiferromagnetic structure.

Keywords: FeRh, high pressure, B2 structure, resistivity, Neel temperature, magnetic phase diagram.

DOI: 10.61011/FTT.2024.12.59599.314



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© Steklov Math. Inst. of RAS, 2025