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Properties of Nanocrystalline Fe75Si15M10 (M—Cr and Al) Powders Prepared by Mechanical Alloying

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We report the structural and magnetic properties of the nanocrystalline Fe75Si15M10 (M—Al and Cr) powders prepared by mechanical alloying. The milling process produced a non-equilibrium solid solutions of bcc α-Fe(Si, Cr) and α-Fe(Si, Al). The average dislocation density increases and the average crystallite size decreases with increasing milling time. Magnetic property studies show that the coercivity of the sample increases and magnetization of the sample decreases with increasing milling time. The evolution of a non-equilibrium solid solution and the resulting magnetic properties of nanocrystalline powders are explained on the basis of Neel theory and modified random anisotropy model proposed by Shen et al.
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Keywords: ANISOTROPY; MECHANICAL ALLOYING; NON-EQUILIBRIUM

Document Type: Research Article

Publication date: 01 August 2008

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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