ACTA

The Resistivity and Hall Effect of the Amorphous Co_xNi_70-xFe₅Si₁₅B₁₀ Ribbons

K. Perzyńska^a, M. Biernacka^a, L. Dobrzyński^a,b, A. Malinowski^a, S. Tarasenko^a and P. Zaleski^a
^a Institute of Physics, University at Białystok, Lipowa 41, 15-424 Białystok, Poland
^b Sołtan Institute for Nuclear Studies, 05-400 Otwock-Świerk, Poland

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The influence of structural disorder and magnetism on the resistivity of the amorphous Co_xNi_70-xFe₅Si₁₅B₁₀ ribbons was investigated. The resistivity vs. alloy composition shows parabolic-like behaviour. In the thermal behaviour, resistivities of the samples show apparent magnetic contribution. They also exhibit minima at temperatures which can be correlated with the Curie temperatures. Above T ≥ 0.5T_C resistivity increases linearly with increasing temperature. This effect is seemingly due to electron-phonon scattering. Obviously, the chemical and positional disorder is responsible for the major part of resistivity.

DOI: 10.12693/APhysPolA.97.745
PACS numbers: 72.15.Cz