Abstract
Hyperfine parameters and the pressure dependence of the magnetic transition temperatures of FeRhGe2 have been investigated. Sample has been prepared using high pressure—high temperature synthesis technique. FeRhGe2 consists of two B20 structure phases with close lattice constants. The phase separation stays constant in the temperature range 4–300 K. The magnetic transition temperatures = 213 K and = 135 K of FeRhGe2 slightly increases with pressure in the range 0–4.5 GPa. We have compared this pressure dependence with some others compounds in the family FeRh x Ge. The two phases in FeRhGe2 have slightly different values of the hyperfine magnetic fields.
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