The pressure derivatives of a number of Fermi-surface orbits in Pd and Pt are calculated using the linear muffin-tin orbital method in the atomic-sphere approximation and including the combined correction terms. The calculations are performed with use of various exchange-correlation potentials. We compare our results with available experimental data and theoretical calculations.

• Received 6 August 1990

DOI:https://doi.org/10.1103/PhysRevB.43.2401