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高电阻率多层纳米颗粒膜软磁特性及微波磁导率

别少伟 江建军 马 强 杜 刚 袁 林 邸永江 冯则坤 何华辉

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高电阻率多层纳米颗粒膜软磁特性及微波磁导率

别少伟, 江建军, 马 强, 杜 刚, 袁 林, 邸永江, 冯则坤, 何华辉
cstr: 32037.14.aps.57.2514

Soft magnetic properties and microwave permeability of multilayer nanogranular films with high resistivity

Bie Shao-Wei, Jiang Jian-Jun, Ma Qiang, Du Gang, Yuan Lin, Di Yong-Jiang, Feng Ze-Kun, He Hua-Hui
cstr: 32037.14.aps.57.2514
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  • 研究了应用于微波频段的多层纳米颗粒膜的电阻率、软磁特性和微波磁导率.采用多次顺序沉积Co40Fe40B20和SiO2薄层制备了薄膜.在100kA/m均匀面内磁场经过250℃真空退火2h,制备的Co40Fe40B20/SiO2多层膜具有难轴矫顽力为210A/m、饱和磁化强度为838.75kA/m、电阻率为2.06×103
    The resistivity, soft magnetic properties and microwave permeability of multilayer nanogranular films suitable for high frequency applications have been investigated in this work. These films were prepared by repeated sequential depositions of thin layers of Co40Fe40B20 and SiO2. After vacuum annealing at 250℃ under a uniform in-plane magnetic field of 100kA/m for 2h, the Co40Fe40B20/SiO2 multilayer films have the hard axis coercivity of 210A/m, saturation magnetization of 838.75kA/m, resistivity of 2.06×103μΩcm. Moreover, the results show that the films have an in-plane uniaxial anisotropy of 2.78kA/m. As a consequence, the real part of measured permeability keeps constant at 125 up to 1.6GHz. The resonance frequency was about1.73GHz.
    • 基金项目: 国家自然科学基金(批准号:50371029,50771047)、教育部新世纪优秀人才支持计划(批准号:NCET20420702) 和湖北省杰出青年科学基金(批准号:2005ABB002)资助的课题.
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  • 文章访问数:  9256
  • PDF下载量:  895
  • 被引次数: 0
出版历程
  • 收稿日期:  2007-07-09
  • 修回日期:  2007-09-12
  • 刊出日期:  2008-02-05

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