磁性石榴石薄膜的磁力显微镜研究  

Studies of Magnetic Garnet using Magnetic Force Microscope

作　　者：田芳[1] 王琛[1] 王乃新[1] 白春礼[1] 

机构地区：[1]中国科学院化学所

出　　处：《电子显微学报》1997年第6期760-763,共4页Journal of Chinese Electron Microscopy Society

摘　　要：本文采用磁力显微镜（ＭＦＭ）对磁性石榴石（ＹＧｄＢｉ）３（ＧａＦｅ）５Ｏ１２薄膜的磁畴结构进行了观察研究。实验结果表明，磁性针尖的磁特性对石榴石ＭＦＭ图像的影响较大，而且随着针尖与样品间距的增大，磁针尖对石榴石畴结构的影响有所降低。另外，改变针尖的磁化方向，得到的石榴石磁畴结构也有所不同。The magnetic tips dependence of the magnetic domains in low coercivity magnetic (YGdBi)3(GaFe)_5O_12 garnet was investigated using magnetic force microscopy.With a soft magnetic tip,we obtained dark and bright stripes with same widths representing domains with opposite magnetization.However,the stray field emanating from a hard tip magnetized the garnet and changed the widths of magnetic bright domains.By chosing appropriate tipsample distance and the tip magnetization,the influence of hard tip can be minimized.

关 键 词：磁力显微镜 石榴石 磁畴 薄膜物理学 

分 类 号：TH742.9[机械工程—光学工程]