FIZIKA A 2 (1993) 3, 171-181

ELECTRONIC AND MAGNETIC PROPERTIES OF TERNARY Zr₂(Ni_1-xM_x)₁ GLASSY ALLOYS

RAMIR RISTIĆ^* and EMIL BABIĆ^**
* Faculty of Education, POB 144, 54000 Osijek, Croatia
^** Department of Physics, Faculty of Science, POB 162, 41000 Zagreb, Croatia

Received 24 November 1993

Original scientific paper

The electric resistivities (in the temperature range from 8 K to 300 K), the room temperature magnetic susceptibility and the superconducting transition temperature of the amorphous Zr₂(Ni_1-xMx)₁ alloys (M=Ti, V, Cr, Mn, Fe, Co, Ni and Cu) have been investigated. The temperature dependence of the electrical resistivity can be described in terms of the incipient electron localisation effects inherent to the high resistivity alloys, same as of the other Zr-3d glassy alloys (3d=Fe, Co, Cu or Ni). The new features introduced with M are the pronounced nonmonotonic variations of the magnetic and electron-transport properties with M. The origin of these variations are the systematic changes in the electronic band structure of the alloys on going from M=Cu towards M=Ti (as confirmed by the photoemission experiments on similar (Zr₆₇Ni₃₃)₈₅M₁₅ amorphous alloys) and the tendency to the formation of localized magnetic moments for M around the middle of 3d-series (M=V, Cr, Mn and Fe). A novel feature is a rather strong suppression of the effects of the incipient localization in the resistivity by the magnetic interactions.

UDC 537.312

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