【摘要】 建立了一个表征强磁性纳米材料磁稀释体系磁化强度的新方法,该方法不同于传统的Gouy法.采用永久磁矩和未偶电子为零的无磁性物质为磁稀释体系,将纳米材料的强磁性稀释后,用Gouy磁天平表征了不同粒径系列的强磁性纳米材料CoFe2O4的磁化强度,探讨了纳米材料粒径与磁稀释体系磁化强度的关系.结果表明,该方法具有样品用量少、数据准确、重现性好的优点.更多还原

【Abstract】 In this paper,a new method to characterize of magnetic strength of CoFe₂O₄ high magnetic nanoparticles is presented which is different with conventional Gouy.An unmagnetic material which permanent magnetic distance and single electron are zero is selected as magnetic diluter system.The magnetic strength of high magnetic nanomaterials CoFe₂O₄ has been characterized using Gouy magnetic balance by adding magnetic diluter system in samples so that the high magnetic of nanoparticles is diluted.The magnetic strength with different nanoparticles size is studied.The results indicate,this method has the advantages of using small amount of sample,accurate and reproducible.更多还原