文献类型：期刊文献

英文题名：Influence of silicon doping on the structure and the magnetic property of gamma-Fe2O3 particle

作者：Zhu, YH; Li, CZ

年份：1997

卷号：55

期号：10

起止页码：998

外文期刊名：ACTA CHIMICA SINICA

收录：;WOS:【SCI-EXPANDED(收录号:WOS:A1997YF80100012)】；

语种：英文

摘要：The structure of Si-doped gamma-Fe2O3 small particles prepared by doping with different silicon content has been investigated by X-ray diffraction based on Furuhashi method. The results show that the lattice parameters decrease continuously with increasing silicon content, which suggests an evidence of a solid solution for Si-doped gamma-Fe2O3. The Si4+ cation in the like-spinels appears a strong tendency to distribution in the tetrahedral site. The oxygen parameter as well as the mean size of interstices of tetrahedral and octahedral also appears a certain influence of silicon doping. Additionally, grain sizes and lattice distortions of the samples which were calculated following the Stokes and Wilson formula indicate a significant decrease for the grain size with increasing silicon content and a little change for the lattice distortion. Finally, the coercivity and saturation magnetization of the Si-doped gamma-Fe2O3 particles are discussed.