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Magnetic phase temperature-pressure diagram of FeRh alloy with Fe94Rh6 phase
Arslanov T.R.
1, Amirov A.A.
1, Khanov L.N.
1
1Amirkhanov Institute of Physics, Daghestan Federal Research Center, Russian Academy of Sciences, Makhachkala, Russia
Email: arslanovt@gmail.com
The T-P magnetic phase diagram of the Fe50Rh50 alloy with the Fe94Rh6 iron-rich phase has been studied based on the resistivity measurements under hydrostatic pressure. The Neel temperature TN~ 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 Fe94Rh6 phase on the TN 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.
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