本文研究了不同纳米金属含量对溶胶-凝胶法制备的纳米Fe,Co,Ni/介孔TiO2复合体的饱和磁化强度、剩余磁化强度、矩形比和矫顽力的影响.通过振动样品磁强计对纳米复合分体磁学参量(-7.96×105 A·m-1＜H＜7.96×105 A·m-1)进行测定;结果表明:纳米金属含量对复合体的磁学参量有着复杂的影响.
参考文献
| [1] | 白木,周洁.纳米磁性材料及其应用[J].信息记录材料,2002(02):38-39. |
| [2] | 都有为,倪刚.磁性纳米材料的新进展[J].物理,1998(09):524. |
| [3] | Kovalenko G V;Sidorova L V et al.Structure of massive material prepared from ultrafine iron[J].Nano-Structured Materials,1995,6:589-591. |
| [4] | Sigurds Arajs .Hysteretic behavior of cobalt powders[J].Journal of Applied Physics,1990,67(09):4499-4501. |
| [5] | Kisker H;Gessmann T;Wurschum R et al.Magnetic properties of high purity nanocrystalline nickel[J].Nanostructureed Materials,1995,6:925-992. |
| [6] | Shull R D .Iron magnetic moments in iron/silica gel nanocomposites[J].Journal of Applied Physics,1990,67(09):4490-4492. |
| [7] | Gang Xiao;Chien C L .Giant magnetic coercivity and percolation effects in granular Fe -SiO2 solids[J].Applied Physics Letters,1987,51(16):1280-1282. |
| [8] | C. Cannas;D. Gatteschi;A. Musinu;G. Piccaluga;C. Sangregorio .Structural and Magnetic Properties of Fe_2O_3 Nanoparticles Dispersed over a Silica Matrix[J].The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical,1998(40):7721-7726. |
| [9] | 张世远.磁性材料基础[M].北京:科学出版社,1998 |
| [10] | 王德芳;叶妙元.磁测量[M].北京:机械工业出版社,1990 |
| [11] | 吴玉程 .过渡族金属与介孔二氧化硅组装及纳米复合材料体系的结构,物性研究[D].中国科学院固体物理研究所,2000. |
| [12] | 龙毅.新功能磁性材料及其应用[M].北京:机械工业出版社,1997 |
| [13] | Jian-Oing Wang .The magnetic anisotropy of Fe-SiO2 and Fe20Ni80-SiO2 Granular solids[J].Journal of Physics D:Applied Physics,1994,27:2002-2008. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%