摘要
Heusler Co2FeSi films with a uniaxial magnetic anisotropy and high ferromagnetic resonance frequency fr were deposited by an oblique sputtering technique on Ru underlayers with various thicknesses tRufrom 0 nm to 5 nm.It is revealed that the Ru underlayers reduce the grain size of Co2FeSi,dramatically enhance the magnetic anisotropy field HK induced by the internal stress from 242 Oe(1 Oe=79.5775 A·m^-1)to 582 Oe with an increment ratio of 2.4,while a low damping coefficient remains.The result of damping implies that the continuous interface between Ru and Co2FeSi induces a large in-plane anisotropic field without introducing additional external damping.As a result,excellent high-frequency soft magnetic properties with fr up to 6.69 GHz are achieved.
作者
Cuiling Wang
Shouheng Zhang
Shandong Li
Honglei Du
Guoxia Zhao
Derang Cao
王翠玲;张守珩;李山东;杜洪磊;赵国霞;曹德让(College of Physics,Center for Marine Observation and Communication,Qingdao University,Qingdao 266071,China;College of Electronic and Information Engineering,Shandong University of Science and Technology,Qingdao 266510,China;School of Physics,Shandong University,Jinan 250100,China)
基金
Project supported by the National Natural Science Foundation of China(Grant Nos.11674187 and 51871127)
the Fund from the Technology on Electronic Test&Measurement Laboratory(Grant No.6142001180103)。
