Low Gilbert damping in Bi/In-doped YIG thin films with giant Faraday effect  

作　　者：Jin Zhan Yi Wang Xianjie Wang Hanxu Zhang Senyin Zhu Lingli Zhang Lingling Tao Yu Sui Wenqing He Caihua Wan Xiufeng Han V.I.Belotelov Bo Song 湛劲;王一;王先杰;张晗旭;朱森寅;张伶莉;陶玲玲;隋郁;何文卿;万蔡华;韩秀峰;V.I.Belotelov;宋波(School of Physics,Harbin Institute of Technology,Harbin 150001,China;Beijing National Laboratory for Condensed Matter Physics,and Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;Russian Quantum Center,Moscow 119991,Russia;National Key Laboratory of Science and Technology on Advanced Composites in Special Environments,Harbin Institute of Technology,Harbin 150001,China;Zhengzhou Research Institute,Harbin Institute of Technology,Zhengzhou 450046,China;Frontiers Science Center for Matter Behave in Space Environment,Harbin Institute of Technology,Harbin 150001,China)

机构地区：[1]School of Physics,Harbin Institute of Technology,Harbin 150001,China [2]Beijing National Laboratory for Condensed Matter Physics,and Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China [3]Russian Quantum Center,Moscow 119991,Russia [4]National Key Laboratory of Science and Technology on Advanced Composites in Special Environments,Harbin Institute of Technology,Harbin 150001,China [5]Zhengzhou Research Institute,Harbin Institute of Technology,Zhengzhou 450046,China [6]Frontiers Science Center for Matter Behave in Space Environment,Harbin Institute of Technology,Harbin 150001,China

出　　处：《Chinese Physics B》2024年第10期419-426,共8页中国物理B（英文版）

基　　金：supported by the National Key Research and Development Program of China(Grant No.2023YFE0201000);the National Science Fund for Distinguished Young Scholars(Grant No.52225201);the National Natural Science Foundation of China(Grant Nos.52372004 and 52072085);the Fundamental Research Funds for the Central Universities(Grant Nos.2023FRFK06001 and HIT.BRET.2022001);Heilongjiang Touyan Innovation Team Program.

摘　　要：Magnetic films with low Gilbert damping are crucial for magnonic devices,which provide a promising platform forrealizing ultralow-energy devices.In this study,low Gilbert damping and coercive field were observed in Bi/In-dopedyttrium iron garnet(BiIn:YIG)thin films.The BiIn:YIG(444)films were deposited onto different substrates using pulsedlaser deposition.Low coercivity(<1 Oe)with saturation magnetization of 125.09 emu/cc was achieved along the in-planedirection of BiIn:YIG film.The values of Gilbert damping and inhomogeneous broadening of ferromagnetic resonance inBiIn:YIG films were obtained to be as low as 4.05×10^(-4)and 5.62 Oe,respectively.In addition to low damping,the giantFaraday rotation angles(up to 2.9×10^(4)deg/cm)were also observed in the BiIn:YIG film.By modifying the magneticstructure and coupling effect between Bi^(3+)and Fe^(3+)of Bi:YIG,doped In^(3+)plays a key role on variation of the magneticproperties.The low damping and giant Faraday effect made the BiIn:YIG film an appealing candidate for magnonic andmagneto-optical devices.

关 键 词：magnonic device Gilbert damping Faraday effect 

分 类 号：O469[理学—凝聚态物理]