Probing the exchange coupling in the complex modified Ho-Fe-B compounds by high-field magnetization measurements

0499603 - FZÚ 2019 RIV US eng J - Článek v odborném periodiku
Tereshina, I. S. - Pyatakov, A.P. - Tereshina-Chitrova, Evgenia - Gorbunov, D.I. - Skourski, Y. - Law, J.M. - Paukov, M. - Havela, L. - Doerr, M. - Zvezdin, A. K. - Andreev, Alexander V.
Probing the exchange coupling in the complex modified Ho-Fe-B compounds by high-field magnetization measurements.
AIP Advances. Roč. 8, č. 12 (2018), s. 1-5, č. článku 124233. E-ISSN 2158-3226
Institucionální podpora: RVO:68378271
Klíčová slova: R₂Fe₁₄B * ferrimagnetism * high-field transition * intersublattice exchange interaction
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 1.579, rok: 2018

By examining the Ho2Fe14B case, we explored the influence of substitution and absorption atoms on the high-field behavior of magnetization of rare-earth (R)-Fe intermetallics. The value of the first critical field shows that the inter-sublattice exchange interactions remain practically unchanged when the substitution takes place in the R sublattice (replacement of up to 50 % of Ho by Nd). On the contrary, hydrogen absorption by Ho2Fe14B and HoNdFe14B of the maximum possible hydrogen concentration 5.5 at./f decreases the strength of the R-Fe exchange by 30%. Remarkably, the influence of hydrogenation is stronger in the compound modified by substitution.

Trvalý link: http://hdl.handle.net/11104/0291837