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
       
Sketch of superparamagnetism of ultrahigh density magnetic recording media.