作　　者： ; ; ; ; ;

机构地区： 西北师范大学化学化工学院

出　　处： 《兰州大学学报（自然科学版）》 2005年第2期68-70,共3页

摘　　要： 研究了强磁性纳米材料磁化强度的表征方法,采用永久磁矩和未偶电子为零的无磁性物质作为磁稀释体系,将纳米材料的强磁性稀释后,用Gouy磁天平表征了强磁性纳米材料NiFe2O4磁化强度,探讨了纳米材料粒径与磁稀释体系磁化强度的变化规律. A new method to characterize the magnetic strength of NiFe2O4 nanoparticles is presented. An unmagnetic material whose permanent magnetic distance and single electron are zero is selected as a magnetic diluter system. Adding the magnetic diluter system in samples so that the high magnetism of nanoparticles is diluted. The magnetic strength of high magnetic nanomaterials NiFe2O4 has been characterized using Gouy magnetic balance by adding the magnetic diluter system in samples. The regulation of the magnetic strength with different sizes of nanoparticles is studied.

关 键 词： 纳米材料 粒径 磁化强度 表征

领　　域： [理学] [理学]