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
       
Experimental and simulated magnetic hysteresis loops. Typical in-plane magnetic hysteresis loops at different azimuthal angles of samples I–IV ((a)–(d)) characterized by MOKE. Samples II–IV ((b)–(d)) exhibit standard easy and hard hysteresis loops at φ = 0° and 90°. The corresponding simulated hysteresis loops at the hard axis (red lines) are displayed in panels (b)–(d).[ 72 ]