王其祥1; 潘海斌2; 宋宝珍1; 李洪钟1
Source Publication无机材料学报

Coating the surface of goethite nanoparticles by Si, Co oxides layer is one of the most important methods to improve the magnetic properties of metal magnetic recording particles. The surface electronic properties of the coated nanoparticles were studied by using XPS. Results show that there is a close, uniform, firm and ultra thin SiO(2) layer formed on the surface of hematite nanoparticles. Silica coating treatment changes the properties of the hematite cores significantly since the binding energy of Fe 2p electrons shows significant shift related to the spectrum of the untreated hematite particles. The chemical shift of the binding energy is more than 2.7eV. A possible interpretation for the shift of such spectral features is that the contact interface surface of silica layer and the hematite particle surface is similar to P-N heterojunction. The cobalt oxides are adsorbed on part of the crystal face of Fe(2)O(3) particles, and the binding energy of whole XPS spectrum mainly shows physical shift about 4.4eV due to the surface charge.

Document Type期刊论文
First Author Affilication中国科学院过程工程研究所
Recommended Citation
GB/T 7714
王其祥,潘海斌,宋宝珍,等. xps研究fe2o3纳米粒子表面包覆无机膜[J]. 无机材料学报,2002,17(4):782.
APA 王其祥,潘海斌,宋宝珍,&李洪钟.(2002).xps研究fe2o3纳米粒子表面包覆无机膜.无机材料学报,17(4),782.
MLA 王其祥,et al."xps研究fe2o3纳米粒子表面包覆无机膜".无机材料学报 17.4(2002):782.
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