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The Effect of Hydrogenation on the Magetocaloric Properties of Nanocrystalline Terbium

Yu. V. Korneeva$^1$, G. S. Burkhanov$^2$, V. B. Chzhan$^1$, I. S. Tereshina$^1$

Moscow University Physics Bulletin 2021. N 3.

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Annotation

In this study, the effect of hydrogenation on the magnetocaloric properties of extra-pure nanocrystalline terbium was investigated. The investigated compositions were TbHx, where $x = 0 – 1.2$ at H/arb.u. In addition to the major phase $\alpha$-TbH$_x$, all the specimens contained a certain amount of a second phase, terbium dihydride ($\beta$-TbH$_2$). For TbH$_x$ specimens, the effect of hydrogenation on magnetocaloric properties was studied by both direct and indirect methods. The magnetocaloric effect was shown to decrease in a nearly linear fashion with increasing hydrogen content in the specimens.

Received: 2021 February 17
Approved: 2021 September 22
PACS:
75.50.Bb Fe and its alloys
75.50.Gg Ferrimagnetics
75.30.Et Exchange and superexchange interactions
Rissian citation:
Ю. В. Корнеева, Г. С. Бурханов, В. Б. Чжан, И. С. Терёшина.
Влияние гидрирования на магнитокалорические свойства нанокристаллического тербия.
Вестн. Моск. ун-та. Сер. 3. Физ. Астрон. 2021. № 3. С. 44.
Authors
Yu. V. Korneeva$^1$, G. S. Burkhanov$^2$, V. B. Chzhan$^1$, I. S. Tereshina$^1$
$^1$Faculty of Physics, Lomonosov Moscow State University, chair of Condensed Matter Physics.
$^2$A.A. Baikov Institute of Metallurgy RAS
Issue 3, 2021

Moscow University Physics Bulletin

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