Influence of interstitial and substitutional atoms on magnetocaloric effects in RNi compounds

0553309 - FZÚ 2022 RIV CH eng J - Journal Article
Chzhan, V.B. - Kurganskaya, A.A. - Tereshina, I. S. - Karpenkov, A.Yu. - Ovchenkova, I.A. - Tereshina-Chitrova, Evgenia - Andreev, Alexander V. - Gorbunov, D.I. - Lushnikov, S.A. - Verbetsky, V.N.
Influence of interstitial and substitutional atoms on magnetocaloric effects in RNi compounds.
Materials Chemistry and Physics. Roč. 264, May (2021), č. článku 124455. ISSN 0254-0584. E-ISSN 1879-3312
R&D Projects: GA MŠMT(CZ) LM2018096; GA ČR(CZ) GA19-00925S
Institutional support: RVO:68378271
Keywords : rare-earth intermetallics * hydrogenation * Curie temperature * magnetocaloric effect
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 4.778, year: 2021
Method of publishing: Limited access
https://doi.org/10.1016/j.matchemphys.2021.124455

The effects of substitutional and interstitial atoms on the magnetic and magnetocaloric properties are investigated for RNi (R is rare earth) compounds attractive for magnetic solid-state cooling at cryogenic temperatures. We focused on combining weakly and highly anisotropic rare earth compounds and obtained GdxDy1-xNi (x = 0.1 and 0.9) compounds and their GdxDy1-xNiH3 hydrides. The magnetocaloric effect values of GdxDy1-xNiHy (y = 0 and 3) in the vicinity of Curie temperatures were obtained and compared with literature data for the final GdNi and DyNi compounds. The observed effects were explained based on altered exchange and magnetocrystalline interactions in the modified compounds.
Permanent Link: http://hdl.handle.net/11104/0328293