Особенности влияния состава и кристаллической структуры на поведение электрофизических свойств сплавов системы Ni-=SUB=-(1-x)-=/SUB=-W-=SUB=-x-=/SUB=- при низких температурах

Abstract

The problem of establishing the correlation between, on the one hand, the chemical and phase compositions of Ni_1– x W_ x alloys (0 ≤ x ≤ 0.5) and, on the other hand, the character of the temperature dependences of the electrical resistivity, is considered. Based on the experimental ρ( T ) curves, the concentration dependences of are reconstructed in the wide temperature range (50 K ≤ T ≤ 273 K). The ρ( x ) curves have features related to a change in the crystal structures of the alloys (concentration fcc–bcc phase transition), their magnetic structures and percolation processes occurring in the two-phase fcc + bcc medium.