首页|Enhanced resonance frequency in Co2FeAl thin film with different thicknesses grown on flexible graphene substrate

Enhanced resonance frequency in Co2FeAl thin film with different thicknesses grown on flexible graphene substrate

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The flexible materials exhibit more favorable properties than most rigid substrates in flexibility,weight saving,me-chanical reliability,and excellent environmental toughness.Particularly,flexible graphene film with unique mechanical properties was extensively explored in high frequency devices.Herein,we report the characteristics of structure and mag-netic properties at high frequency of Co2FeAl thin film with different thicknesses grown on flexible graphene substrate at room temperature.The exciting finding for the columnar structure of Co2FeAl thin film lays the foundation for excellent high frequency property of Co2FeAl/flexible graphene structure.In-plane magnetic anisotropy field varying with increasing thickness of Co2FeAl thin film can be obtained by measurement of ferromagnetic resonance,which can be ascribed to the enhancement of crystallinity and the increase of grain size.Meanwhile,the resonance frequency which can be achieved by the measurement of vector network analyzer with the microstrip method increases with increasing thickness of Co2FeAl thin film.Moreover,in our case with graphene film,the resonance magnetic field is quite stable though folded for twenty cycles,which demonstrates that good flexibility of graphene film and the stability of high frequency magnetic property of Co2FeAl thin film grown on flexible graphene substrate.These results are promising for the design of microwave devices and wireless communication equipment.

enhanced resonance frequencymagnetic resonance fieldflexible graphene substrate

周偲、袁少康、朱登玉、白宇明、王韬、刘福福、潘禄禄、冯存芳、张博涵、何大平、汪胜祥

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Hubei Engineering and Technology Research Center for Functional Fiber Fabrication and Testing,Wuhan Textile University,Wuhan 430200,China

School of Mathematical and Physical Sciences,Wuhan Textile University,Wuhan 430200,China

School of Electronic and Electrical Engineering,Wuhan Textile University,Wuhan 430200,China

School of Integrated Circuits,Huazhong University of Science and Technology,Wuhan 430074,China

Key Laboratory for Magnetism and Magnetic Materials,Ministry of Education,Lanzhou University,Lanzhou 730000,China

Beijing National Center for Condensed Matter Physics and Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China

Hubei Engineering Research Center of RF-Microwave Technology and Application,Wuhan University of Technology,Wuhan 430070,China

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国家自然科学基金国家自然科学基金中央高校基本科研业务费专项

51901163121041712021XXJS025

2024

10.1088/1674-1056/acfafa

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(3)
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