Interfacial effect on the reverse of magnetization and ultrafast demagnetization in Co/Ni bilayers with perpendicular magnetic anisotropy
Gong Zi-Zhao1, 2, Zhang Wei2, 3, He Wei2, Zhang Xiang-Qun2, Liu Yong1, †, Cheng Zhao-Hua2, 3, ‡
       

(color online) Ultrafast demagnetization curves with a large range of microscopic damping constant.