Heterogeneous magnetic state in hydrogen-amorphized GdFe2

Hydrogen-amorphized GdFe2Hx were prepared for two different compositions of parent alloy and different hydrogenation temperature. The average hyperfine field grows from 22.5 T for the initial compound up to 33.4 T for the amorphized hydride. Samples amorphized at different temperatures show the same...

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Bibliographic Details
Published in:Journal of alloys and compounds 1999-03, Vol.284 (1-2), p.70-76
Main Authors: Mushnikov, N.V, Goto, Tsuneaki, Zajkov, N.K, Gaviko, V.S, Serikov, V.V, Kleinerman, N.M, Yermakov, A.Ye
Format: Article
Language:English
Subjects:
Amorphization
Gadolinium iron compound
Heat treatment
Hydrogen in metals
Magnetic properties
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Summary:Hydrogen-amorphized GdFe2Hx were prepared for two different compositions of parent alloy and different hydrogenation temperature. The average hyperfine field grows from 22.5 T for the initial compound up to 33.4 T for the amorphized hydride. Samples amorphized at different temperatures show the same hyperfine field, whereas magnetic moment, compensation temperature and Curie temperature decrease with increasing the hydrogenation temperature. The non-Brillouin behavior of temperature dependence of magnetic moment of Gd sublattice and anomalous high-field magnetization curves were found in amorphous hydrides. The obtained results were interpreted in the assumption of heterogeneous structural state.
ISSN:0925-8388
1873-4669
DOI:10.1016/S0925-8388(98)00964-5