Investigation of the Field-Induced Phase Transitions in the (R,R)2Fe14B Rare-Earth Intermetallics in Ultrahigh Magnetic Fields
Investigation of the Field-Induced Phase Transitions in the (R,R)2Fe14B Rare-Earth Intermetallics in Ultrahigh Magnetic Fields
Kostyuchenko, N. V.; Tereshina, I. S.; Andreev, A. V.; Doerr, M.; Tereshina-Chitrova, E. A.; Paukov, M. A.; Gorbunov, D.; Politova, G. A.; Pyatakov, A. P.; Miyata, A.; Drachenko, O.; Zvezdin, A. K.; Portugall, O.
In this work, we perform a comparative study of the magnetization behavior of four series of compounds R2Fe14B and their hydrides R2Fe14BH5.5, and the compositions (Nd0.5R0.5)2Fe14B and their hydrides (Nd0.5R´0.5)2Fe14BH5.5 with R and R´ = Ho, Er, and Tm. The magnetization is measured in pulsed magnetic fields up to 58 T and in megagauss fields up to 135 T at 5 K. The first and second critical fields of the field-induced transitions, Hc1 and Hc2 were estimated analytically and the results were verified against experimental data. We find that hydrogenation of R2Fe14B and (Nd0.5R´0.5)2Fe14B reduces drastically the Hc1 and Hc2 values and, as a consequence, the intersublattice R–Fe exchange interaction parameter λ.
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IEEE Transactions on Magnetics 57(2021)2, 2101105
DOI: 10.1109/TMAG.2020.3014664
Cited 4 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-32168
Publ.-Id: 32168