Tailoring the ferrimagnetic-to-ferromagnetic transition field by interstitial and substitutional atoms in the R-Fe compounds

0520913 - FZÚ 2020 RIV GB eng J - Journal Article
Tereshina, I. S. - Ivanov, L.A. - Tereshina-Chitrova, Evgenia - Gorbunov, D.I. - Paukov, M.A. - Havela, L. - Drulis, H. - Granovsky, S.A. - Doerr, M. - Gaviko, V.S. - Andreev, Alexander V.
Tailoring the ferrimagnetic-to-ferromagnetic transition field by interstitial and substitutional atoms in the R-Fe compounds.
Intermetallics. Roč. 112, Sep (2019), s. 1-5, č. článku 106546. ISSN 0966-9795. E-ISSN 1879-0216
R&D Projects: GA ČR(CZ) GA19-00925S
Institutional support: RVO:68378271
Keywords : R₂Fe₁₄B * ferrimagnetism * high magnetic field * field-induced transition * hydrides
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 3.398, year: 2019
Method of publishing: Limited access
https://doi.org/10.1016/j.intermet.2019.106546

Magnetic properties of rare-earth compounds R2Fe14B are highly sensitive to atomic substitutions and interstitial absorption of light elements. We studied a combined influence of the substitutions in the R sublattice and hydrogen absorption on the behavior in field up to 60 T. For R = Er and Tm it was shown that substitution of Nd for Er or Tm increases the saturation magnetization as a result of ferromagnetic ordering of Nd and Fe moments. Under sufficiently high field the magnetic moments rotate and the field-induced ferromagnetic state may be observed. The field at which a transition occurs is related to the strength of the inter-sublattice exchange interaction. The role of hydrogen is primarily to weaken the inter-sublattice ferrimagnetic coupling so the reorientation becomes achievable at the available magnetic field in hydrides Tm2Fe14BH5.5 and (Tm0.5Nd0.5)2Fe14BH5.5.
Permanent Link: http://hdl.handle.net/11104/0305588