Tuning of the Magnetic Damping Parameter by Varying Cr Composition in Fe1-xCrx Alloy  

作　　者：Mao Yang Xianyang Lu Bo Liu Xuezhong Ruan Junran Zhang Xiaoqian Zhang Dawei Huang Jing Wu Jun Du Bo Liu Hao Meng Liang He Yongbing Xu 杨茂;陆显扬;刘波;阮学忠;张军然;张晓倩;黄大威;吴竞;杜军;刘波;孟皓;何亮;徐永兵(Jiangsu Provincial Key Laboratory of Nanotechnology,School of Electronics Science and Engineering,Nanjing University,Nanjing 210093,China;College of Physics and Electronic Information,Luoyang Normal University,Luoyang 471022,China;York-Nanjing International Joint Center in Spintronics,Departments of Electronics and Physics,University of York,York YO105DD,UK;Department of Physics,Nanjing University,Nanjing 210093,China;Key Laboratory of Spintronics Materials,Devices and Systems of Zhejiang Province,9 Lixin Road,Linan,Hangzhou 311300,China)

机构地区：[1]Jiangsu Provincial Key Laboratory of Nanotechnology,School of Electronics Science and Engineering,Nanjing University,Nanjing 210093,China [2]College of Physics and Electronic Information,Luoyang Normal University,Luoyang 471022,China [3]York-Nanjing International Joint Center in Spintronics,Departments of Electronics and Physics,University of York,York YO105DD,UK [4]Department of Physics,Nanjing University,Nanjing 210093,China [5]Key Laboratory of Spintronics Materials,Devices and Systems of Zhejiang Province,9 Lixin Road,Linan,Hangzhou 311300,China

出　　处：《Chinese Physics Letters》2020年第10期92-97,共6页中国物理快报（英文版）

基　　金：Supported by the National Key Research and Development Program of China(Grant No.2016YFA0300803);the National Natural Science Foundation of China(Grant Nos.61427812 and 11774160);the Natural Science Foundation of Jiangsu Province of China(Grant No.BK20192006);the Fundamental Research Funds for the Central Universities(Grant No.021014380113);the Program for New Century Excellent Talents in Universities of Ministry of Education of China(Grant No.NCET-13-0094).

摘　　要：We investigate the magnetic damping parameter of Fe 1−x Cr x thin films using the time-resolved magneto-optical Kerr effect technique.It is demonstrated that the overall effective damping parameter is enhanced with the increasing Cr concentration.The effective damping at high fieldα0 is found to be significantly enhanced when increasing the Cr concentration with theα0=0.159 in the Fe 45 Cr 55 enhanced by 562%compared with that ofα0=0.024 in the pure Fe film.This study provides a new approach of controlling the effective damping parameter with a desired magnitude via varying Cr composition.

关 键 词：technique. film. concentration. 

分 类 号：TG141[一般工业技术—材料科学与工程]