Naslov
Magnetic field dependence of the resistivity in hydrogen-doped Zr-Fe metallic glass

Autori
Kokanović, Ivan ; Leontić, Boran ; Lukatela, Jagoda ; Basletić, Mario ; Hamzić, Amir

Izvornik
Materials Science and Engineering A : structural materials properties, microstructure and processing (0921-5093) 226-228 (1997); 706-710

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

Ključne riječi
disordered systems; galvanomagnetic effects; metals; quantum localization

Sažetak
We present results for the magnetic field dependence of the electrical resistivity in hydrogen-doped Zr_68Fe_32 metallic glasses. The undoped sample is paramagnetic down to very low temperatures (< 1 K) because of pronounced spin fluctuations. The observed magnetoresistance is positive and increases with hydrogen concentration. The results have been analyzed using a renormalized expression for the magnetoresistivity which takes into account the exchange enhancement of the spin-splitting contributions (through the Stoner factor) to the usual weak localization and electron-electron interaction terms. The magnetoresistivity enhancement of hydrogen-doped Zr_68Fe_32 has been attributed to the increase of the Stoner factor (1 - I) ^ -1, and of the spin-scattering rate thau_s ^ -1. That increase indicates enhancement of spin fluctuations with hydrogen.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA