Magnetism of Fe-Al Alloys in Spin Density Fluctuation Theory

Abstract:

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.

• Periodical: Materials Science Forum (Volume 845)
• Pages: 126-129
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.845.126
• Online since: March 2016
• Authors: Danil I. Radzivonchik, Vladimir I. Grebennikov
• Keywords: Atomic Magnetic Moments, Fe-Al Alloys, Itinerant Electron Magnetism, Thermal Spin Fluctuations

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