TY - JOUR
T1 - The role of fluctuations on the electrical resistivity and atomic volume for some liquid alloys with critical mixing
AU - Masaki, T.
AU - Onogi, T.
AU - Ogura, K.
AU - Kudo, I.
AU - Itami, T.
N1 - Funding Information:
T.I. received a research budget for scientific research from the Ministry of Education in Japanese Government for promotion, No. 07650457.
PY - 1996/10
Y1 - 1996/10
N2 - The electrical resistivity, ρ, was measured by the dc four probe method for some liquid alloys with critical mixing, that is Bi-Ga, Cd-Ga and Hg-Ga alloys. The maximum of temperature coefficient of ρ, dρ/dT, was found at the critical composition, Xc, on the isotherm for liquid Bi-Ga and Cd-Ga alloys. This tendency becomes far striking at the critical temperature Tc. However, an opposite minimum behavior of dρ/dT was found at Xc for liquid Hg-Ga alloys. The atomic volume, VM, was also measured by a picnometer method for liquid Bi-Ga alloys. The obtained VM is a linear function of composition. The value of thermal expansion coefficient, αp, near Xc is large and shows a strong temperature dependence. The critical exponent β for liquid Bi-Ga alloys is determined to be 0.365 ± 0.02 in the range, 5.6 × 10-5 ≤ ∈(=|T-Tc|/Tc) ≤ 7.5 × 10-2 from the binodal curve determined by resistivity measurements on heating with mixing by agitations.
AB - The electrical resistivity, ρ, was measured by the dc four probe method for some liquid alloys with critical mixing, that is Bi-Ga, Cd-Ga and Hg-Ga alloys. The maximum of temperature coefficient of ρ, dρ/dT, was found at the critical composition, Xc, on the isotherm for liquid Bi-Ga and Cd-Ga alloys. This tendency becomes far striking at the critical temperature Tc. However, an opposite minimum behavior of dρ/dT was found at Xc for liquid Hg-Ga alloys. The atomic volume, VM, was also measured by a picnometer method for liquid Bi-Ga alloys. The obtained VM is a linear function of composition. The value of thermal expansion coefficient, αp, near Xc is large and shows a strong temperature dependence. The critical exponent β for liquid Bi-Ga alloys is determined to be 0.365 ± 0.02 in the range, 5.6 × 10-5 ≤ ∈(=|T-Tc|/Tc) ≤ 7.5 × 10-2 from the binodal curve determined by resistivity measurements on heating with mixing by agitations.
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U2 - 10.1016/S0022-3093(96)00251-7
DO - 10.1016/S0022-3093(96)00251-7
M3 - Article
AN - SCOPUS:18144437928
SN - 0022-3093
VL - 205-207
SP - 338
EP - 341
JO - Journal of Non-Crystalline Solids
JF - Journal of Non-Crystalline Solids
IS - 1
ER -