Magnetic properties and microstructures of perpendicular anisotropy (SmCo7/Cu)n films |
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Authors: | J.L. Tsai M.Y. Chen G.B. Lin C.L. Ou |
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Affiliation: | Department of Materials Science and Engineering, National Chung Hsing University, 250 Kuo Kuang Rd., Taichung, Taiwan, ROC |
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Abstract: | Pseudobinary SmCo7 − xCux intermetallic compound films with a TbCu7-type structure were prepared by sputtered (SmCo7/Cu)n multilayer. After annealing, the spacer layer Cu (0.5-1.5 nm) diffused into the SmCo7 matrix and stabilized the SmCo7 meta-stable phase. The resulting microstructure was investigated by transmission electron microscopy. Perpendicular anisotropy was obtained by introducing a Cu/Ti dual underlayer during sputtering, resulting in prefer-orientated SmCo7 (00L) X-ray diffraction peaks. This study observes a maze-like domain pattern in perpendicular anisotropy films and finds single- and multi-domain particles in correlated AFM and MFM images. |
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Keywords: | Perpendicular anisotropy Magnetic domain Intermetallic compound |
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