Co－Sn替代钡铁氧体的穆斯堡尔谱研究

Mossbauer Study of Substitution Co-Sn for Barium Ferrite

对Ｃｏ－Ｓｎ替代钡铁氧体系列样品进行了室温下的￣（５７）Ｆｅ穆斯堡尔谱测试，给出了各子谱的相对强度、各晶位的超精细磁场与替代浓度的关系．ＭＳ结果表明，Ｃｏ－Ｓｎ对Ｆｅ原子的取代是在１２ｋ晶位上进行的．采用晶场作用下的单粒子模型，由ＭＳ结果出发，对宏观磁性浓度的变化作了理论分析，所得结论与宏观磁性测量结果相一致．

7Fe Mossbauer spectra at room temperature are obtained for the substitution ofCo-Sn for barium ferrite series. The dependence of relative intensity of subspectra and hy-perfine magnetic field of different crystalline site on substitution concentration is given,Theresults indicate that the Fe atoms are substituted by the Co-Sn preferntially on the l2k site.Based on the MS results,the modle of One-ion under crystalline fild is used to explain theo.retically the dependence of macroscopic magnetism on sustitution concentration. The conclu-sions obtained are consist with the results of macroscopic magnetism measurement.