Electrical resistivity of liquid Sb–Zn alloys

Abstract

Using the DC four-probe method, temperature dependence of the electrical resistivity (ρ − T) of Sb100− x Zn x (x = 25, 40, 50, 57, 61, 80 at%) alloys was investigated in the temperature range of 500–860°C. The results showed that resistivity of each liquid alloy decreased non-linearly with temperature increasing above their liquidus (T L) until reaching critical temperature, at which the resistivity–temperature coefficients dρ/dT–T converts from negative into positive. The phenomena of liquid phase transformation might relate with the dissociation of covalent bonds, chemical orders and associations in Sb–Zn melts.