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

Znanstveni rad - Izvorni znanstveni rad

• Autor: Ivan Kokanović
• Autor: Boran Leontić
• Autor: Jagoda Lukatela
• Autorova ustanova: Sveučilište u Zagrebu; Prirodoslovno-matematički fakultet; (Fizički odsjek)
• Znanstveno / umjetničko područje, polje i grana: PRIRODNE ZNANOSTI; Fizika

Sažetak (engleski)

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.

• Ključne riječi (engleski): galvanomagnetic effects, disordered systems, metals, quantum localisation
• Jezik: engleski
• Vrsta publikacije: Znanstveni rad - Izvorni znanstveni rad
• Status objave: Objavljen
• Vrsta recenzije: Recenziran - međunarodna recenzija
• Verzija publikacije: Objavljena verzija rada (izdavačev PDF)
• Naslov časopisa: Physical review B: Condensed matter and materials physics
• Brojčani podaci: vol. 60, br. 10, str. 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
• Datum objave publikacije: 1999
• URL dokumenta: http://dx.doi.org/10.1103/PhysRevB.60.7440
• Vrsta resursa: Tekst
• Prava pristupa: Otvoreni pristup
• Javna napomena: Copyright (1999) by the American Physical Society.
• Datum i vrijeme pohrane: 2019-10-07 11:44:29