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

Scientific paper - Original scientific paper

• Author: Ivan Kokanović
• Author: Boran Leontić
• Author: Jagoda Lukatela
• Author's institution: University of Zagreb; Faculty of Science; (Department of Physics)
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Physics

Abstract (english)

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.

• Keywords (english): galvanomagnetic effects, disordered systems, metals, quantum localisation
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: Physical review B: Condensed matter and materials physics
• Numbering: vol. 60, no. 10, pp. 7440-7444
• p-ISSN: 1098-0121
• e-ISSN: 1550-235X
• DOI: https://doi.org/10.1103/PhysRevB.60.7440
• URN:NBN: urn:nbn:hr:217:979816
• Publication: 1999
• Document URL: http://dx.doi.org/10.1103/PhysRevB.60.7440
• Type of resource: Text
• Access conditions: Open access
• Public note: Copyright (1999) by the American Physical Society.
• Created on: 2019-10-07 11:44:29