Hydrogen-induced changes in magnetic susceptibility of (Zr68Fe32)1-xHx metallic glasses

Kokanović, Ivan and Leontić, Boran and Lukatela, Jagoda (1999) Hydrogen-induced changes in magnetic susceptibility of (Zr68Fe32)1-xHx metallic glasses. Physical Review B, 60 (10). pp. 7440-7444. ISSN 1098-0121

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Abstract

The magnetization of hydrogen-doped (Zr68Fe32)1-xHx metallic glasses has been measured in the temperature range 1.7–100 K for various dopant concentrations. For hydrogen concentrations x<0.1 the samples are paramagnetic with magnetic susceptibilities that are only weakly temperature dependent down to about 35 K, below which a slight increase can be observed. For larger hydrogen concentrations the magnetic susceptibilities become strongly temperature dependent (and show Curie-Weiss behavior). It is found that χ(100 K) increases upon hydrogenation. This is explained by an increase in the contribution of the Fe3d-electronic states to the density of states at the Fermi level, due to Zr-H bond formation, which leads to an enhancement of spin fluctuations and the formation of magnetic moments on the Fe-atom site at hydrogen concentrations x>0.1. The form and magnitude of the observed temperature dependence of the magnetic susceptibility are well accounted for by the sum of the Curie-Weiss term and quantum corrections to the susceptibility.

Item Type: Article
Keywords: galvanomagnetic effects, disordered systems, metals, quantum localisation
Date: 1999
Subjects: NATURAL SCIENCES > Physics
Additional Information: Copyright (1999) by the American Physical Society.
Divisions: Faculty of Science > Department of Physics
Project code: 119203
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 26 Aug 2014 15:40
Last Modified: 26 Aug 2014 15:40
URI: http://digre.pmf.unizg.hr/id/eprint/1217

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