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Magnetic susceptibility of Zr80Co20)1-xHx metalic glasses

Ivan Kokanović ; Department of Physics, Faculty of Science, University of Zagreb, Zagreb, Croatia
Boran Leontić ; Department of Physics, Faculty of Science, University of Zagreb, Zagreb, Croatia
Jagoda Lukatela ; Institute of Physics, POB 304, Zagreb, Croatia

Sažetak

The magnetisation of hydrogen-doped (Zr80Co20)1-xHx 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 Tc = 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, c(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.

Ključne riječi

galvanomagnetic effects; disordered systems; metals; quantum localisation

Hrčak ID:

301104

URI

https://hrcak.srce.hr/301104

Datum izdavanja:

1.8.2001.

Podaci na drugim jezicima: hrvatski

Posjeta: 476 *