Naslov
Electrical transport in ternary glassy Zr_2(Ni_(1- x)M_x)_1 alloys

Autori
Ristić, Ramir ; Marohnić, Željko ; Babić, Emil

Izvornik
Materials science & engineering. A, Structural materials: properties, microstructure and processing (0921-5093) 226-228 (1997); 1060-1063

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

Ključne riječi
glassy alloys ; electrical transport ; localization ; metallic glasses

Sažetak
The addition of a third transition element M (Ti, V, Cr, Mn, Fe, Co or Cu) to the amorphous Zr2Ni alloy causes, for fixed M content, a systematic decrease in superconducting transition temperature T-c, magnetic susceptibility chi and coefficient A? of linear conductivity variation Delta sigma proportional to T below 100 K (which measures the electron-phonon interaction) in going from M = Ti towards M = Cu. A minimum of A and Delta T-c/Delta x (gradient of the change in the superconducting transition temperature with concentration of M) and maximum of Delta chi for M = Cr and Mn can be associated with the appearance of the magnetic correlation in these alleys. The measurements of the magnetoresistivity in the field B up to 1.2 T and for different temperatures show that the magnetoresistivity also increases when going from M = Cu towards hi = Ti ; we can explain magnetoresistivity as a combination of the contributions of the electron localization and superconducting fluctuations. Our results agree with measurements of UPS spectra and specific heat capacity for similar alloys.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

Napomena
Rad je prezentiran na skupu Ninth International Conference on Rapidly Quenched
and Metastable Materials, održanom od 25.-30.08.1996., Bratislava, Slovačka ; P.
Duhaj ; Mrafko, P. ; Svec, P.D. (ur.)

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