FeCoNi-SiO_2合金纳米颗粒体的制备和磁性研究  

Study on preparation and magnetic properties of the FeCoNi-SiO_2 granular alloy solids

作　　者：唐贵德[1] 张民 刘力虎[1] 杨连祥[1] 尹珍宝 潘成福[1] 聂向富[1] 罗河烈[2] 

机构地区：[1]河北师范大学物理学院,河北石家庄050016 [2]中国科学院物理研究所,北京100080

出　　处：《功能材料》2002年第6期605-608,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目 (1 0 0 740 1 3) ;河北省教育厅科研基金资助项目 (990 1 0 2 )

摘　　要：采用溶胶 凝胶法制备了FeCoNi SiO2 合金颗粒体 ,利用透射电子显微镜 (TEM )观察了嵌在SiO2 母体中的合金微粒体的形貌 ,利用X射线衍射 (XRD)确定了样品的相结构 ;用振动样品磁强计 (VSM )测定了样品的各种磁性参数。特别是详细研究了制备条件和合金含量对材料的磁学性质的影响。还研究了合金中的Ni含量对材料的磁学性质和合金微粒晶格常数的影响。FeCoNi SiO 2 granular alloy solids have been prepared using a sol gel method. The shapes and sizes of alloy particles embedded in the SiO 2 matrix were determined by transmission electron microscopy (TEM). The crystal structure of the alloy particles was determined by X ray diffraction (XRD). The magnetic parameters were measured by the vibrating sample magnetometer (VSM). In particular, the dependence of preparing condition and the alloy content in the samples on their magnetic properties was studied in detail. In addition, we studied influence of the Ni content on the magnetic properties and the lattice constant of alloy particles.

关 键 词：FeCoNi-SiO2合金 纳米颗粒体 制备 磁性 矫顽力 溶胶-凝胶法 

分 类 号：TM27[一般工业技术—材料科学与工程]