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FIZIKA A 10 (2001) 3 , 113-120
 
MAGNETIC SUSCEPTIBILITY OF (Zr80Co20)1-xHx METALLIC GLASSES
IVAN KOKANOVIĆa, BORAN LEONTIĆa and JAGODA
LUKATELAb
aDepartment of Physics, Faculty of Science, University of
Zagreb, Zagreb, Croatia
bInstitute of Physics, POB 304, Zagreb, Croatia
Dedicated to Professor Kseno Ilakovac on the occasion of his 70th
birthday
Received 26 April 2001; revised manuscript received 4 December 2001
Accepted 3 December 2001 Online 30 December 2001
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.
PACS numbers: 72.15.Gd, 72.15.Rn, 75.20.-g
UDC 537.312, 538.95
Keywords: galvanomagnetic effects, disordered systems, metals, quantum localisation
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