Naslov
Transport properties of hydrogen-doped (Zr803d20)1-xHx (3d = Co, Ni) metallic glasses

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

Izvornik
Physica Status Solidi B (0370-1972) 241 (2004), 4; 908-915

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

Ključne riječi
resistivity; magnetoresistivity; superconductivity; metallic glasses; hydrogen

Sažetak
The electrical resistivities of hydrogen-doped (Zr803d20)1-xHx (3d = Ni, Co ; x  0.11) metallic glasses have been measured at temperatures between 2 K and 110 K and in magnetic fields up to 1 T for various dopant concentrations. These systems have a high room-temperature resistivity ( > 160   cm) and become su-perconducting below 4 K. The increase of the room-temperature resistivity and its temperature coefficient with hydrogen dopant concentration is explained as due to an increase of disorder with hydrogen-doping. The temperature and magnetic field dependence of the resistivity has been analysed using theoretical mod-els of weak-localisation and electron-electron interaction in disordered conductors. The hydrogen dopant is found to reduce the effective electron diffusion constant, D, the spin-orbit scattering rate,   so-1, the super-conducting transition temperature, Tc, and broadens the superconducting transition region. The contribu-tion of the Maki-Thompson interaction to the magnetoresistivity is also reduced.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA