Magnetic properties and energy-spectrum parameters of Cd1-<i>x</i>Mg<i>x</i> alloys

The model kp Hamiltonian and the Fukuyama formula for the electronic orbital susceptibility are used to calculate the magnetism of weakly split states in an hcp lattice and compare it with the experimental data for cadmium-magnesium alloys. The comparison yields values of the spectrum parameters which appear in the kp Hamiltonian, in particular, the electrostatic (Ec) and spin-orbit (Δ) splittings of the spectrum at the point K of the Brillouin zone and establishes the dependence of Ec and the chemical potential on the magnesium concentration and the temperature. The results are compared with the expected behavior of the spectrum parameters in the mean-lattice approximation for known nonlocal pseudopotential models.

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