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Grebennikov, Vladimir I.; Radzivonchik, Danil I.
Materials science forum, 03/2016, Volume: 845Journal Article
The electron spin density fluctuation theory is developed for disordered alloys. The model contains two types of magnetic atoms characterized by different intra-atomic exchange interactions because of their different nearest neighborhood. The microscopic approach allow us to describe the various temperature behaviors of the magnetization of the Fe-Al alloys (25 - 32 at.% Al) observed in experiments. Competition parallel and antiparallel orientations of subsystems Fe(1) and Fe(2) gives rise to a diverse and anomalous temperature behavior of magnetism in partially and strongly disordered alloys.
