The result reveals that the magnetic particles have a slight dimensional increase in average diameter,and retain almost original saturation magnetization from 64 emu/g to 62 emu/g after surface thiolation.

• 结果表明:表面巯基化后的磁性粒子粒径略有增加,室温下磁化强度由原来的64emu/g变为62emu/g,较好地保留了原始磁性特征。