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Characterization of a Fe-Based Soft Magnetic Alloy System with High Saturation Magnetization

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The ratios of Fe/Co and Fe/B in a ferromagnetic alloy system, Fe(87− x y ) Co x Ti7 Zr6 By (x = 20, 30, and 40 at% and y = 2 and 4 at%), which was produced by the melt-spinning technique in the form of thin ribbons, were investigated to improve the saturation magnetization. The thermal properties Tx were in the range of 792.0 K to 838.0 K, and it decreased by decreasing Fe/Co ratio. In the as-spun amorphous ribbons, the saturation magnetization and coercivity ranged from 137.5 emu/g to 164.2 emu/g and from 0.027 Oe to 1.245 Oe, respectively. The optimum Fe/Co ratio for the Fe(83− x ) Co x Ti7 Zr6 B4 system was determined to be 64:36. In other words, the optimum system was Fe60 Co25 Ti7 Zr6 B2, which exhibited robust soft magnetic properties, such as a low coercivity of 0.252 Oe, and high saturation magnetization of 164.2 emu/g (1.55 T). Also, in this system, magnetic properties such as the saturation magnetization and coercivity increased with decreasing Fe/Co ratio.

Keywords: Amorphous/Nanocrystalline Ribbon; Ferromagnetic; Fe–Co Based; Soft Magnetic Material

Document Type: Research Article

Affiliations: Department of Physics, Sookmyung Women’s University, Seoul 140-742, Korea

Publication date: May 1, 2016

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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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