The hyperfine magnetic fields and the effect of high pressure on the magnetic transition temperatures of the noncentrosymmetric FeRhGe2compound (B20)

D A Salamatin; V A Sidorov; Z Surowiec; A V Bokov; M V Magnitskaya; N M Chtchelkachev; M Wiertel; M Budzynski; A V Tsvyashchenko

doi:10.1088/1361-648X/ac885d

The hyperfine magnetic fields and the effect of high pressure on the magnetic transition temperatures of the noncentrosymmetric FeRhGe₂compound (B20)

J Phys Condens Matter. 2022 Aug 18;34(42). doi: 10.1088/1361-648X/ac885d.

Authors

D A Salamatin^{1

2}, V A Sidorov¹, Z Surowiec^{3

4}, A V Bokov¹, M V Magnitskaya¹, N M Chtchelkachev¹, M Wiertel³, M Budzynski³, A V Tsvyashchenko¹

Affiliations

¹ Vereshchagin Institute of High Pressure Physics, RAS, 108840 Moscow, Russia.
² Dzhelepov Laboratory of Nuclear Problems, Joint Institute for Nuclear Research, 141980 Dubna, Russia.
³ Institute of Physics, M. Curie-Sklodowska University, 20-031 Lublin, Poland.
⁴ Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 141980 Dubna, Russia.

PMID: 35944545
DOI: 10.1088/1361-648X/ac885d

Abstract

Hyperfine parameters and the pressure dependence of the magnetic transition temperatures of FeRhGe₂have been investigated. Sample has been prepared using high pressure-high temperature synthesis technique. FeRhGe₂consists of two B20 structure phases with close lattice constants. The phase separation stays constant in the temperature range 4-300 K. The magnetic transition temperaturesTc1= 213 K andTc2= 135 K of FeRhGe₂slightly increases with pressure in the range 0-4.5 GPa. We have compared this pressure dependence with some others compounds in the family Fe1-xRh_xGe. The two phases in FeRhGe₂have slightly different values of the hyperfine magnetic fields.

Keywords: B20; DMI; FeGe; Mössbauer; RhGe; high pressure; magnetism.