Manipulating magnetic anisotropy and ultrafast spin dynamics of magnetic nanostructures<xref ref-type="fn" rid="cpb150907fn1">*</xref>

Manipulating magnetic anisotropy and ultrafast spin dynamics of magnetic nanostructures*

Cheng Zhao-Hua†, He Wei, Zhang Xiang-Qun, Sun Da-Li, Du Hai-Feng, Wu Qiong, Ye Jun, Fang Ya-Peng, Liu Hao-Liang

Angular dependence of the normalized remanence M _r/ M _s, obtained from the experimental hysteresis loops. Sample I shows a UMA superimposed on a weak sixfold anisotropy, and samples II–IV display a gradually enhanced UMA with the sixfold anisotropy almost concealed.^{[ 72 ]}