Magnetic susceptibility of Zr_80Co_20)_1-xH_x metalic glasses

Kokanović, Ivan and Leontić, Boran and Lukatela, Jagoda (2001) Magnetic susceptibility of Zr_80Co_20)_1-xH_x metalic glasses. Fizika A, 10 (3). pp. 113-120. ISSN 1330-0008

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Abstract

The magnetisation of hydrogen-doped (Zr_80Co_20)_1-xH_x metallic glasses has been measured in the temperature range 1.7 K -100 K for various dopant concentrations. The system is paramagnetic and becomes superconducting at T_c = 3.98 K. The magnetic susceptibility of the undoped sample above Tc is strongly temperature dependent and shows the Curie-Weiss behaviour, whereas in the doped amples it is temperature independent. It has been also found that the magnetic susceptibility at 100 K, χ(100 K), decreases with hydrogen concentration. The low-temperature upturn in the undoped sample most likely results from a small amount of magnetic impurities. Doping the sample with small hydrogen concentration results in the screening of magnetic impurities thus reducing the Curie-Weiss contribution to the magnetic susceptibility. 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 the quantum corrections to the susceptibility.

Item Type: Article
Keywords: galvanomagnetic effects, disordered systems, metals, quantum localisation
Date: 2001
Subjects: NATURAL SCIENCES > Physics
Divisions: Faculty of Science > Department of Physics
Publisher: Hrvatsko fizikalno društvo
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 15 Apr 2014 15:58
Last Modified: 15 Apr 2014 15:58
URI: http://digre.pmf.unizg.hr/id/eprint/838

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