Abstract
The possibility of the appearance of ferromagnetic instability in a hexagonal close-packed system is established on the basis of the idea of a strong interaction in the same unit cell. The conditions for the appearance of spin and orbital instability as a function of the degree of filling of the 2xy, x 2−y 2 shell are obtained. The physical picture obtained has a direct relationship to ferromagnetism of hexagonal and cubic cobalt, which possesses the highest Curie temperature, 1396 K.
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References
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Pis’ma Zh. Éksp. Teor. Fiz. 70, No. 7, 451–456 (10 October 1999)