Multiple order spin-wave resonance in composition gradient sputtering FeCoB thin films
Shuai Du,
Meihong Liu,
Fanghzou Wang,
Qiuyue Li,
Xiaoqi Ma,
Xinfang Guo,
Xiaowen Chen,
Jing Yu,
Yawen Song,
Jie Xu,
Shandong Li,
Derang Cao
Affiliations
Shuai Du
College of Physics, Center for Marine Observation and Communications, National Demonstration Center for Experimental Applied Physics Education, Qingdao University, Qingdao 266071, People’s Republic of China
Meihong Liu
College of Physics, Center for Marine Observation and Communications, National Demonstration Center for Experimental Applied Physics Education, Qingdao University, Qingdao 266071, People’s Republic of China
Fanghzou Wang
Peter Grünberg Institute, Forschungszentrum Jülich, 52425 Jülich, Germany
Qiuyue Li
College of Physics, Center for Marine Observation and Communications, National Demonstration Center for Experimental Applied Physics Education, Qingdao University, Qingdao 266071, People’s Republic of China
Xiaoqi Ma
College of Physics, Center for Marine Observation and Communications, National Demonstration Center for Experimental Applied Physics Education, Qingdao University, Qingdao 266071, People’s Republic of China
Xinfang Guo
College of Physics, Center for Marine Observation and Communications, National Demonstration Center for Experimental Applied Physics Education, Qingdao University, Qingdao 266071, People’s Republic of China
Xiaowen Chen
College of Physics, Center for Marine Observation and Communications, National Demonstration Center for Experimental Applied Physics Education, Qingdao University, Qingdao 266071, People’s Republic of China
Jing Yu
College of Physics, Center for Marine Observation and Communications, National Demonstration Center for Experimental Applied Physics Education, Qingdao University, Qingdao 266071, People’s Republic of China
Yawen Song
College of Physics, Center for Marine Observation and Communications, National Demonstration Center for Experimental Applied Physics Education, Qingdao University, Qingdao 266071, People’s Republic of China
Jie Xu
College of Physics, Center for Marine Observation and Communications, National Demonstration Center for Experimental Applied Physics Education, Qingdao University, Qingdao 266071, People’s Republic of China
Shandong Li
College of Physics, Center for Marine Observation and Communications, National Demonstration Center for Experimental Applied Physics Education, Qingdao University, Qingdao 266071, People’s Republic of China
Derang Cao
College of Physics, Center for Marine Observation and Communications, National Demonstration Center for Experimental Applied Physics Education, Qingdao University, Qingdao 266071, People’s Republic of China
FeCoB films with different B doping contents and different thicknesses were deposited by composition gradient sputtering. The results show that in-plane anisotropy fields and exchange constants change with the increasing B contents and increasing thickness, respectively. Both results of the composition-gradient films and the thickness-dependent films and the micromagnetic simulation indicate that multiple order spin-wave resonances are easy to obtain in the films with the large in-plane anisotropy field. We observed four resonance peaks including three perpendicular standing spin waves. The hysteresis loop and magnetic domain results indicate that such films also have good magnetic softness and an in-plane homogeneous domain structure.
