Влияние гидрирования на магнитострикцию и магнитокалорический эффект в монокристалле гадолиния | Zendy

И.С. Терешина | Zendy; Г.А. Политова | Zendy; В.А. Четырбоцкий | Zendy; Е.А. Терешина-Хитрова | Zendy; М.А. Пауков | Zendy; А.В. Андреев | Zendy

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Влияние гидрирования на магнитострикцию и магнитокалорический эффект в монокристалле гадолиния

Author(s) -

И.С. Терешина,

Г.А. Политова,

В.А. Четырбоцкий,

Е.А. Терешина-Хитрова,

М.А. Пауков,

А.В. Андреев

Publication year - 2019

Publication title -

физика твердого тела

Language(s) - English

Resource type - Journals

eISSN - 1726-7498

pISSN - 0367-3294

DOI - 10.21883/ftt.2019.02.47118.253

Subject(s) - magnetic refrigeration , gadolinium , magnetostriction , materials science , anisotropy , hydrogen , hexagonal crystal system , magnetic anisotropy , condensed matter physics , crystallography , lattice constant , solid solution , analytical chemistry (journal) , chemistry , magnetization , metallurgy , magnetic field , physics , optics , organic chemistry , chromatography , quantum mechanics , diffraction

The gadolinium single crystal obtained by the Czochralski method was hydrogenated to the composition GdH_0.15, which corresponds to a metal–hydrogen solid solution (α phase). The magnetostriction and magnetocaloric effect were measured for both the initial and hydrogenated samples. It is found that the hydrogen atoms in the hexagonal lattice of gadolinium can affect the magnitude and sign of the magnetostriction constants and cause the anisotropy of the magnetocaloric effect. The main mechanisms responsible for the observed effects are discussed.

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