| Surface Modification of a-Fe Metal Particles by Chemical Surface Coating |
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| 作者单位： | Qixiang WANG，Baozhen SONG and Hongzhong LIInstitute of Process Engineering，Chinese Academy of Sciences，Beijing 100080，China |
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| 摘 要： | The structure of a-Fe metal magnetic recording particles coated with silane coupling agents have been studied by TEM, FT-IR, EXAFS, Mossbauer. The results show that a close, uniform, firm and ultra thin layer, which is beneficial to the magnetic and chemical stability, has been formed by the cross-linked chemical bond Si-O-Si. And the organic molecule has chemically bonded to the particle surface, which has greatly affected the surface Fe atom electronic structure. Furthermore, the covalent bond between metal particle surface and organic molecule has obvious effect on the near edge structure of the surface Fe atoms.
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Surface Modification of a-Fe Metal Particles by Chemical Surface Coating |
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| Qixiang WANG,Baozhen SONG and Hongzhong LIInstitute of Process Engineering,Chinese Academy of Sciences,Beijing ,China. Surface Modification of a-Fe Metal Particles by Chemical Surface Coating[J]. Journal of Materials Science & Technology, 2003, 0(2) |
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| Authors: | Qixiang WANG Baozhen SONG Hongzhong LIInstitute of Process Engineering Chinese Academy of Sciences Beijing China |
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| Affiliation: | Qixiang WANG,Baozhen SONG and Hongzhong LIInstitute of Process Engineering,Chinese Academy of Sciences,Beijing 100080,China |
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| Abstract: | The structure of a-Fe metal magnetic recording particles coated with silane coupling agents have been studied by TEM, FT-IR, EXAFS, Mossbauer. The results show that a close, uniform, firm and ultra thin layer, which is beneficial to the magnetic and chemical stability, has been formed by the cross-linked chemical bond Si-O-Si. And the organic molecule has chemically bonded to the particle surface, which has greatly affected the surface Fe atom electronic structure. Furthermore, the covalent bond between metal particle surface and organic molecule has obvious effect on the near edge structure of the surface Fe atoms. |
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| Keywords: | Magnetic recording particles a-Fe EXAFS Mossbauer Chemical surface coating |
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