摘要
纳米磁性微粒(流体)是制备磁性无极或有极靶向药物载体的基本原料.用化学沉淀法成功合成出纳米磁性微粒(流体).用X射线衍射、透射电子显微镜对制备的磁性微粒进行了表征,测试了磁性微粒和流体的磁性能.研究表明:合成的磁性粒子主要成分为面心结构的反尖晶石Fe3O4,磁性颗粒的粒径一般为2～10 nm,以5 nm居多;纳米磁性液体性能稳定,长期放置不发生絮凝;纳米磁性微粒磁化率为0.32,纳米磁性流体磁化率为8.9×l0-3.该磁性材料磁响应力较强,剩磁较弱,属软磁性纳米材料.
Nanometer magnetic particles （fluid） are an essential material for the preparation of carriers of target medicines which are either organic or inorganic. Nanometer magnetic particles （fluid） were synthesized by chemical precipitation method and were characterized hy X-ray diffraction and transmission electron microscopy. The magnetic properties of the magnetic particles （fluid） obtained were investigated. The results show that the major component of the magnetic particles is anti-spinel Fe3O4 with a face-centered cubic structure, and the particle sizes of 2 10 nm and 5 nm were numerous among the various sizes. The property of the nanometer magnetic fluid is stable and no flocculation was found over a long deposition period. The magnetic susceptibility of nanometer magnetic particles and fluid is 0.32 and 8.9× 10^-3 respectively. The magnetism response of the material is larger and the magnetic remnant is smaller. The nanometer magnetic particles （fluid） obtained are a soft nanometer magnetic material.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2005年第11期1352-1355,共4页
Journal of The Chinese Ceramic Society
基金
甘肃省科技厅计划项目(GS022B52104)资助
关键词
纳米磁性微粒
纳米磁性流体
化学沉积法
靶向药物载体
磁化性能
nanometer magnetic particles
nanometer magnetic fluid
chemical precipitation method
target medicine carrier
magnetization property
作者简介
汤庆国（1963～）．男，博士．高级工程师。
