High-field magnetization study of R.sub.2./sub.Fe.sub.17./sub.N.sub.2./sub. (R = Ho and Er) nitrides

0487392 - FZÚ 2018 RIV US eng J - Journal Article
Tereshina, I. S. - Tereshina, Evgeniya - Pelevin, I.A. - Doerr, M. - Law, J.M. - Verbetski, V.N. - Salamova, A.A.
High-field magnetization study of R₂Fe₁₇N₂ (R = Ho and Er) nitrides.
Journal of Low Temperature Physics. Roč. 190, č. 5-6 (2018), s. 236-243. ISSN 0022-2291. E-ISSN 1573-7357
Institutional support: RVO:68378271
Keywords : rare earth intermetallics * high magnetic fields * permanent magnet materials * nitrides
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 1.491, year: 2018

The structure and magnetic properties of the nitrided compounds ( and Er) are studied. The type of crystal structure is preserved upon nitrogenation, and the relative unit cell volume increase exceeds 6%. Magnetic studies are performed in fields up to 60 T at 4.2 K on aligned powder samples. Field-induced spin-reorientation (SR) transitions are observed in the M(H) curves of . Unlike the parent compounds, where the magnetization increases in steps as the field grows stronger, demonstrate a gradual increase in magnetization. It is indicative of the change of the SR transition from first to the second type. Extrapolation of magnetization curves to the theoretical value of magnetization in the forced ferromagnetic state yields the coefficient of the inter-sublattice R-Fe exchange interaction. The inter-sublattice exchange is found to decrease upon nitrogenation.
Permanent Link: http://hdl.handle.net/11104/0282054