Melting and High-Temperature Electrical Resistance of Gold under Pressure
Abstract
The electrical resistance of gold was measured over the temperature range 30°C to the melting point and over a pressure range 0-70 kbar. At constant pressure, a sudden twofold increase in resistance sharply indicated the melting point and was used to determine the solid-liquid phase line to 70 kbar. The experimental melting curve has an initial slope, 5.91°C/kbar, in very good agreement with Clapeyron's equation, and has a form satisfying a Simon's equation with a coefficient c=2.2+/-0.1. The electrical resistance data show a decrease in the temperature coefficient of resistivity at higher pressures, while the resistance at the melting point appears to be a constant independent of pressure.
- Publication:
-
Physical Review
- Pub Date:
- April 1965
- DOI:
- 10.1103/PhysRev.138.A129
- Bibcode:
- 1965PhRv..138..129D