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ThMn12-type phases for magnets with low rare-earth content: Crystal-field analysis of the full magnetization process.
Tereshina, I S; Kostyuchenko, N V; Tereshina-Chitrova, E A; Skourski, Y; Doerr, M; Pelevin, I A; Zvezdin, A K; Paukov, M; Havela, L; Drulis, H.
Afiliación
  • Tereshina IS; Faculty of Physics, Lomonosov Moscow State University, 119991, Moscow, Russia. irina_tereshina@mail.ru.
  • Kostyuchenko NV; Moscow Institute of Physics and Technology, Dolgoprudny, Moscow region, 9 Institutsky Per., Dolgoprudny, 141700, Russia.
  • Tereshina-Chitrova EA; Institut für Festkörperphysik, Technische Universität Wien, Vienna, Austria.
  • Skourski Y; Institute of Physics CAS, Na Slovance 2, 18221, Prague, Czech Republic.
  • Doerr M; Hochfeld-Magnetlabor Dresden (HLD), Helmholtz-Zentrum Dresden-Rossendorf, D-01314, Dresden, Germany.
  • Pelevin IA; Technische Universität Dresden, D-01062, Dresden, Germany.
  • Zvezdin AK; Baikov Institute of Metallurgy and Materials Science RAS, 119991, Moscow, Russia.
  • Paukov M; A. M. Prokhorov General Physics Institute of Russian Academy of Sciences, Moscow, 38 Vavilov Str., 119991, Russia.
  • Havela L; National Research University Higher School of Economics, Myasnitskaya 20, Moscow, 101000, Russia.
  • Drulis H; Faculty of Mathematics and Physics, Charles University, Prague, 12116, Czech Republic.
Sci Rep ; 8(1): 3595, 2018 Feb 26.
Article en En | MEDLINE | ID: mdl-29483577
Rare-earth (R)-iron alloys are a backbone of permanent magnets. Recent increase in price of rare earths has pushed the industry to seek ways to reduce the R-content in the hard magnetic materials. For this reason strong magnets with the ThMn12 type of structure came into focus. Functional properties of R(Fe,T)12 (T-element stabilizes the structure) compounds or their interstitially modified derivatives, R(Fe,T)12-X (X is an atom of hydrogen or nitrogen) are determined by the crystal-electric-field (CEF) and exchange interaction (EI) parameters. We have calculated the parameters using high-field magnetization data. We choose the ferrimagnetic Tm-containing compounds, which are most sensitive to magnetic field and demonstrate that TmFe11Ti-H reaches the ferromagnetic state in the magnetic field of 52 T. Knowledge of exact CEF and EI parameters and their variation in the compounds modified by the interstitial atoms is a cornerstone of the quest for hard magnetic materials with low rare-earth content.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sci Rep Año: 2018 Tipo del documento: Article País de afiliación: Rusia Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sci Rep Año: 2018 Tipo del documento: Article País de afiliación: Rusia Pais de publicación: Reino Unido