Finite-temperature magnetic properties of Sm.sub.2./sub.Fe.sub.17./sub.N.sub.x./sub. using an ab initio effective spin model

0538084 - FZÚ 2021 RIV US eng J - Článek v odborném periodiku
Yamashita, S. - Suzuki, D. - Yoshioka, T. - Tsuchiura, H. - Novák, Pavel
Finite-temperature magnetic properties of Sm₂Fe₁₇N_x using an ab initio effective spin model.
Physical Review B. Roč. 102, č. 21 (2020), s. 1-7, č. článku 214439. ISSN 2469-9950. E-ISSN 2469-9969
Grant CEP: GA MŠMT(CZ) EF16_019/0000760
Grant ostatní: OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institucionální podpora: RVO:68378271
Klíčová slova: effective spin model * magnetism * Sm₂Fe₁₇N_x
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 4.036, rok: 2020
Způsob publikování: Omezený přístup
https://doi.org/10.1103/PhysRevB.102.214439

In this study we investigate the finite-temperature magnetic properties of Sm2Fe17Nx (x=0,3)using an effective spin model constructed based on the information obtained by first-principles calculations.We find that assuming the plausible trivalent Sm3+ configuration results in a model that can satisfactorily describe the magnetization curves of Sm2Fe17N3.By contrast, the model based on the divalent Sm2+ configuration is suitable to reproduce the magnetization curves of Sm2Fe17.These results expand the understanding of how electronic structure affects the magnetic properties of these compounds.

Trvalý link: http://hdl.handle.net/11104/0315905