Magnetic phase transitions in GdH.sub.0.15./sub.: some peculiarities in the behavior of magnetocaloric and magnetostrictive effects

0566441 - FZÚ 2023 RIV US eng J - Journal Article
Politova, G.A. - Tereshina, I. S. - Tereshina-Chitrova, Evgenia - Vondráčková, B. - Pospíšil, J. - Paukov, M.A. - Andreev, Alexander V.
Magnetic phase transitions in GdH_0.15: some peculiarities in the behavior of magnetocaloric and magnetostrictive effects.
IEEE Magnetics Letters. Roč. 13, April (2022), č. článku 7103705. ISSN 1949-307X. E-ISSN 1949-3088
R&D Projects: GA ČR(CZ) GA21-09766S; GA MŠMT(CZ) LM2018096
Institutional support: RVO:68378271
Keywords : rare-earth metal * hydrides * magnetocaloric effect * magnetostriction
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 1.2, year: 2022
Method of publishing: Limited access
https://doi.org/10.1109/LMAG.2022.3171089

The magnetocaloric effect (MCE) and anomalies of magnetostriction behavior were studied at the order-order and order-disorder magnetic phase transitions in hydrided Gd single crystal grown by a modified Czochralski method. The composition GdH0.15 was obtained using a Sievert-type apparatus. While parent Gd shows an isotropic MCE at the order-disorder phase transition, the effect is anisotropic in GdH0.15 due to the appearance of local anisotropy. We investigate in detail the temperature variation of the longitudinal, transverse, volume, and anisotropic magnetostriction. Hydrogenation is found to influence both the magnitude and the sign of the magnetostriction constants.
Permanent Link: https://hdl.handle.net/11104/0337760