Abstract
The electrical, magnetic, and optical properties of the Cu72Au24Ag4 ternary alloy in the ordered and disordered states have been studied by the method of severe torsional plastic deformation under pressure in Bridgman anvils. It has been shown that, as a result of this deformation, the residual electrical resistivity of the alloy increases by approximately 11% and the magnitude of the negative thermopower decreases. The high diamagnetic susceptibility of the alloy has been explained by a significant role of charge carriers with the effective mass considerably smaller than the free-electron mass. The behavior of the optical conductivity has been discussed with due regard for the results of energy-band calculations. The experimental data obtained for the Cu72Au24Ag4 alloy have been compared with the results of similar studies of the Cu3Au binary alloy.
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