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

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

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Magnetic films with low Gilbert damping are crucial for magnonic devices,which provide a promising platform for realizing ultralow-energy devices.In this study,low Gilbert damping and coercive field were observed in Bi/In-doped yttrium iron garnet(BiIn:YIG)thin films.The BiIn:YIG(444)films were deposited onto different substrates using pulsed laser deposition.Low coercivity(＜1 Oe)with saturation magnetization of 125.09 emu/cc was achieved along the in-plane direction of BiIn:YIG film.The values of Gilbert damping and inhomogeneous broadening of ferromagnetic resonance in BiIn:YIG films were obtained to be as low as 4.05 × 10-4 and 5.62 Oe,respectively.In addition to low damping,the giant Faraday rotation angles(up to 2.9 × 104 deg/cm)were also observed in the BiIn:YIG film.By modifying the magnetic structure and coupling effect between Bi3+and Fe3+of Bi:YIG,doped In3+plays a key role on variation of the magnetic properties.The low damping and giant Faraday effect made the BiIn:YIG film an appealing candidate for magnonic and magneto-optical devices.

magnonic deviceGilbert dampingFaraday effect

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

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School of Physics,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

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

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National Key Research and Development Program of ChinaNational Science Fund for Distinguished Young ScholarsNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaFundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central UniversitiesHeilongjiang Touyan Innovation Team Program

2023YFE02010005222520152372004520720852023FRFK06001HIT.BRET.2022001

2024

10.1088/1674-1056/ad6b84

中国物理B(英文版)
中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI
影响因子：0.995
ISSN：1674-1056
年,卷(期)：2024.33(10)