Abstract
We study low temperature magnetic properties of transition metals. The ground state spontaneous magnetization is calculated in a pseudopotenti al approximation. In the calculations, the core electronic orbitals are approxi- mated by asymptotic expressions. The magnetizations are calculated for uni- form spin densities of valence (chemically active) electrons and in the Lind- hard approximation. Our calculations of the Bloch wall parameter and the magnon stiffness constant are based on a study of ferromagnetic and para- magnetic phases. A simple Bragg-Williams approximation between energy of spin polarization and the time-average of the spin moment per atom deter- mines the exchange coupling (Heisenberg-like) for spin-polarized nearest neighbour Wigner—Seitz cells. Ab initio numerical results of the spontaneous magnetization, the Bloch wall parameter, and the magnon stiffness constant are obtained for Fe, Co, and Ni.
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