| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Processing YCo5 Permanent Magnetic Submicron Flakes by Surfactant-Assisted High-Energy Ball Milling |
| ZHANG Jing-Jing,GAO Hong-Mei,YAN Yu,BAI Xue,WANG Wen-Quan,SU Feng,DU Xiao-Bo** |
| State key Laboratory for Superhard Materials and Department of Physics, Jilin University, Changchun 130012 |
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| Cite this article: |
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ZHANG Jing-Jing, GAO Hong-Mei, YAN Yu et al 2012 Chin. Phys. Lett. 29 057501 |
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Abstract YCo5 alloy is processed by surfactant−assisted high-energy ball milling. Oleic acid is used as the surfactant and is 20% of the starting powder. The resultant particles are flakes of several microns in length and width, and 20–200 nm in thickness. The flakes have significant crystallographic anisotropy and the c-axis (also easy magnetization axes) is perpendicular to the flake's surface. Maximum coercivity of 192 kA/m is obtained in the sample milled for 100 min. Excess milling results in the appearance of Fe and deteriorates the permanent magnetic properties seriously.
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Received: 25 September 2011
Published: 30 April 2012
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| PACS: |
75.50.Tt
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(Fine-particle systems; nanocrystalline materials)
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75.50.Vv
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(High coercivity materials)
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75.50.Ww
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(Permanent magnets)
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