采用湿化学方法制备了Co掺杂的二氧化锡纳米粉(Sn1-xCoxO2),经研究发现,Co以离子形式存在,而不是以单质形式存在,样品中除了金红石型的SnO2相之外,没有发现其他杂质的相,随着Co掺杂含量的增加,晶粒尺寸减小,光吸收谱红移,禁带宽度线性下降。钴离子磁矩随掺杂含量的增加而减小,这可能是由于占据晶格上近邻阳离子位置的磁性离子数目增加使磁性离子成反铁磁性排列的结果。 Co-doped SnO2 nanopowder (Sn1-xCoxO2) was prepared by wet chemical method. It was found that Co exists in ionic form rather than in elemental form. In addition to the rutile SnO2 phase in the sample, The phase of other impurities is found. With the increase of Co doping content, the grain size decreases, the light absorption spectrum shifts red and the forbidden band width decreases linearly. The magnetic moment of cobalt ion decreases with the increase of doping content, which may be due to the antiferromagnetic arrangement of magnetic ions due to the increase of the number of magnetic ions occupying the positions of the adjacent cations on the lattice.