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Len E.G.,G V Kurdyumov Institute For Metal Physica | Melnyk I.M.,G V Kurdyumov Institute For Metal Physica | Repetsky S.P.,Taras Shevchenko National University | Lizunov V.V.,G V Kurdyumov Institute For Metal Physica | Tatarenko V.A.,G V Kurdyumov Institute For Metal Physica
Materialwissenschaft und Werkstofftechnik | Year: 2011

The formation of the homogeneous magnetic short-range-ordered regions in disordered bcc-Fe0.5Co0.5 alloy under the influence of the electron-energy spectrum realignment with temperature is considered. For the description of electron states in a crystal, the multiband tight-binding model and the developed method for the cluster expansion of Green's functions and thermodynamic potential of a disordered crystal were applied. Within the scope of the mentioned approach, calculations of both the electron-energy spectrum and the temperature-dependent equilibrium values of the pair-wise magnetic-correlation parameters of disordered bcc-Fe0.5Co 0.5 alloy were performed. The equilibrium values of parameters of magnetic and interatomic correlations were obtained at minimum free energy. Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Source

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