Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 509, Issue 29, Pages 7729-7737Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2011.04.095
Keywords
Mechanical alloying; Nanostructured materials; Saturation magnetization; Coercivity
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This work investigates the effects of 6.5 wt% Si addition and milling times on the structural and magnetic properties of Fe50Co50 powders. For this purpose, at first the elemental Fe and Co powders were milled for 10 h to produce Fe50Co50 alloy and then Si was added and the new product was milled again for different times. The microstructural and magnetic properties were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and vibrating sample magnetometer (VSM). The results show that the minimum crystallite size of the as-milled powders (similar to 12 nm) has been achieved after introducing Si and milled for 8 h (total milling time of 18 h). Also an amount of 188 emu/g has been achieved for M-s. This amount of M-s is higher than most of those which have been already reported for Ms of different Fe-Si systems. (C) 2011 Elsevier B.V. All rights reserved.
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