Magnetic Properties and Nanocrystalline Phases in Sn Containing SmCo5 Alloys |
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Authors: | Hamid Zaigham and F Ahmad Khalid |
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Affiliation: | (1) Faculty of Materials Science and Engineering, GIK Institute of Engineering Sciences and Technology, Topi, KP, Pakistan; |
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Abstract: | SmCo5 alloys with Sn additions (0.2-2.0 at.%) were prepared by mechanical milling of arc-melted samples. The nano-phase structures
and magnetic properties of as-milled powders were investigated. The Sn additions resulted in development of nanocrystalline
structures producing exchange-coupled magnets with better remanence magnetization to maximum magnetization ratios (M
r/M
max), typically 0.92 at 9.9 kOe coercivity. In addition, it was observed that the Sn concentrations lead to higher M
r/M
max ratios and maximum magnetization accompanying lower coercivity. X-ray diffraction revealed formation of 2:17 and 2:7 phases
in 1:5 matrix, which were found to be dependent on Sn percentage. It appeared that higher Sn concentrations promoted 2:17
phase and helped in the formation of nano-sized phases. |
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Keywords: | |
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