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Pandey, Brajesh
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article
Properties of Nanocrystalline Fe75Si15M10 (M—Cr and Al) Powders Prepared by Mechanical Alloying
Abstract
<jats:p>We report the structural and magnetic properties of the nanocrystalline Fe<jats:sub>75</jats:sub>Si<jats:sub>15</jats:sub>M<jats:sub>10</jats:sub> (M—Al and Cr) powders prepared by mechanical alloying. The milling process produced a non-equilibrium solid solutions of <jats:italic>bcc</jats:italic> <jats:italic>α</jats:italic>-Fe(Si, Cr) and<jats:italic>α</jats:italic>-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. Theevolution 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.</jats:p>