Izvorni znanstveni članak
Influence of hydrogen on the superconducting and the paramagnetic properties of some Zr-3d metallic glasses
Ivan Kokanović
; Faculty of Science, University of Zagreb, POB 162, HR-10001 Zagreb, Croatia aInstitute of Physics, POB 304, HR-10001 Zagreb, Croatia
Boran Leontić
; Faculty of Science, University of Zagreb, POB 162, HR-10001 Zagreb, Croatia aInstitute of Physics, POB 304, HR-10001 Zagreb, Croatia
Jagoda Lukatela
; Faculty of Science, University of Zagreb, POB 162, HR-10001 Zagreb, Croatia aInstitute of Physics, POB 304, HR-10001 Zagreb, Croatia
Sažetak
We present the experimental results on the effects of hydrogen doping on the superconducting and paramagnetic properties of zirconium-rich (x > 0.66) Zrx3d1-x metallic glasses. Zr0.70Cu0.30, Zr0.67Ni0.33 and Zr0.67Co0.33 are superconductors with a superconducting transition temperature in the vicinity of 2 K, while Zr0.68Fe0.32 is a paramagnet down to very low temperatures because of pronounced spin-fluctuations. The magnetoresistivity data are analysed using theoretical models of weak location and electron-electron interactions. Doping with hydrogen reduces the superconducting transition temperature in Zr0.70Cu0.30, Zr0.67Ni0.33 and Zr0.67Co0.33 metallic glasses. The magnetoresistivity enhancement of hydrogen-doped Zr0.68Fe0.32 has been attributed to the increase of the Stoner factor, (1-I)-1. That increase indicates an enhancement of spin fluctuations with hydrogen.
Ključne riječi
Hrčak ID:
299571
URI
Datum izdavanja:
1.9.1995.
Posjeta: 184 *