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


Kokanović, Ivan; Leontić, Boran; Lukatela, Jagoda
Hydrogen-induced changes in magnetic susceptibility of (Zr68Fe32)1-xHx metallic glasses // Physisical review B : condensed matter, 60 (1999), 10; 7440-7444 (međunarodna recenzija, članak, znanstveni)


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

Autori
Kokanović, Ivan ; Leontić, Boran ; Lukatela, Jagoda

Izvornik
Physisical review B : condensed matter (0163-1829) 60 (1999), 10; 7440-7444

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Galvanomagnetic effects; disordered systems; metals; quantum localisation

Sažetak
The magnetisation of hydrogen-doped (Zr68Fe32)1-xHx metallic glasses has been measured in the temperature range 1.7 K -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 the Curie-Weiss behaviour). It is found that ƒÓ(100 K) increases upon hydrogenation. This is explained by an increase in the contribution of the Fe 3d-electronic states to the density of states at the Fermi level, due to the 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 with the sum of the Curie-Weiss term and the quantum corrections to the susceptibility.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
00350104
119203

Ustanove
Institut za fiziku, Zagreb,
Prirodoslovno-matematički fakultet, Zagreb

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • SCI-EXP, SSCI i/ili A&HCI