MONTE-CARLO SIMULATION OF MAGNETIC-PROPERTIES OF VARIOUS PHASES OF COAND AMORPHOUS-ALLOYS CO1-XBX

A single expression is proposed for the exchange interaction parameter in phases of cobalt in the form of a function of interatomic distance . Monte Carlo method was applied to Ising's model for calculating the magnetic properties of models of fcc-Co. liquid and amorphous cobalt. Spontaneous magnetization of amorphous Co at low temperatures is simil ar to 84% of the magnetization of crystalline Co. In the case of model s of amorphous alloys Co1-xBx (x = 0.10; 0.185 and 0.30) the variant t hat takes account of only direct exchange interaction between spins of cobalt atoms underestimates the Curie temperature at x > 0.2 by 200-3 00 K.