Pressure effects on magnetic phase transitions in FeRh and FeRhIr alloys | Zendy

Vinokurova L. I. | Zendy; Vlasov A. V. | Zendy; PardaviHorváth M. | Zendy

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Pressure effects on magnetic phase transitions in FeRh and FeRhIr alloys

Author(s) -

Vinokurova L. I.,

Vlasov A. V.,

PardaviHorváth M.

Publication year - 1976

Publication title -

physica status solidi (b)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.51

H-Index - 109

eISSN - 1521-3951

pISSN - 0370-1972

DOI - 10.1002/pssb.2220780136

Subject(s) - antiferromagnetism , condensed matter physics , ferromagnetism , hydrostatic pressure , curie temperature , phase transition , electrical resistivity and conductivity , materials science , phase (matter) , hysteresis , paramagnetism , alloy , chemistry , thermodynamics , metallurgy , physics , organic chemistry , quantum mechanics

The effect of quasi‐hydrostatic pressures up to 100 kbar is investigated on the phase transitions of Fe 1− x Rh x alloys by resistivity measurements. The pressure dependence of the first order antiferromagnetic (AF) to ferromagnetic (FM) phase transformation temperature d T k /d p = 4.4 to 5 K/kbar. The pressure dependence of the second order FM to paramagnetic (PM) transition, i.e. that of the Curie‐point is d T C /d p = −0.7 K/kbar. At about 60 kbar the thermal hysteresis diminishes, and above the range of the co‐existence of three phases (AF—FM—PM) the pressure dependence of the AF—PM transition is characterized by d T /d p = 0.6 to 1.0 K/kbar. The AF—PM transition is investigated in an Ir‐substituted alloy (Fe 44 Rh 49.5 Ir 6.5 ) also, where d T /d p = 0.6 K/kbar.

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