Surface Modification of a-Fe Metal Particles by Chemical Surface Coating

作     者：Qixiang WANG, Baozhen SONG and Hongzhong LIInstitute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2003年第19卷第2期

页      面：155-157页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：The authors gratefully acknowledge the support of the National Natural Science Foundation of China (NO.50071057)  and the support of the National Synchrotron Radiation Laboratory and Center Foundation (Hefei)  China 

主　　题：Magnetic recording particles a-Fe EXAFS Mossbauer Chemical surface coating 

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.