Chin. Phys. B ›› 2013, Vol. 22 ›› Issue (4): 47502-047502.doi: 10.1088/1674-1056/22/4/047502

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Flexible tuning microwave permeability spectrum in [ferromagnet/antiferromagnet]n exchange-biasedmultilayer stack structure

金立川, 张怀武, 唐晓莉, 白飞明, 钟智勇   

  1. State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
  • 收稿日期:2012-07-09 修回日期:2012-09-28 出版日期:2013-03-01 发布日期:2013-03-01
  • 基金资助:
    Project supported by the Foundation for Innovative Research Groups of the National Natural Science Foundation of China (Grant No. 61021061), the National Basic Research Program of China (Grant No. 2012CB933104), and the National Natural Science Foundation of China (Grant Nos. 61071028, 51171038, and 60801027).

Flexible tuning microwave permeability spectrum in [ferromagnet/antiferromagnet]n exchange-biasedmultilayer stack structure

Jin Li-Chuan (金立川), Zhang Huai-Wu (张怀武), Tang Xiao-Li (唐晓莉), Bai Fei-Ming (白飞明), Zhong Zhi-Yong (钟智勇)   

  1. State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
  • Received:2012-07-09 Revised:2012-09-28 Online:2013-03-01 Published:2013-03-01
  • Contact: Jin Li-Chuan E-mail:brooklynlichuanj@gmail.com
  • Supported by:
    Project supported by the Foundation for Innovative Research Groups of the National Natural Science Foundation of China (Grant No. 61021061), the National Basic Research Program of China (Grant No. 2012CB933104), and the National Natural Science Foundation of China (Grant Nos. 61071028, 51171038, and 60801027).

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摘要： NiFe/[IrMn/NiFe/IrMn]5/[NiFe/IrMn]4/NiFe structured exchange-biased multilayer films are designed and prepared by magnetron sputtering. The static and the microwave magnetic properties are systematically investigated. The results reveal that adding partially pinned ferromagnetic layer can effectively broaden the ferromagnetic resonance linewidth toward low frequency domain. Moreover, a wideband multi-peak permeability spectrum with a 3.1-GHz linewidth is obtained by overlapping the spectra of different partially pinned ferromagnetic layers and [antiferromagnet/ferromagnet/antiferromagnet]n stacks. Our results show that the linewidth of the sample can be feasibly tuned through controlling the proper exchange bias fields of different stacks. The designed multilayered thin films have potential application for a tunable wideband high frequency noise filter.

关键词: magnetic multilayer thin films, ferromagnetic resonance, permeability spectra, exchange bias

Abstract: NiFe/[IrMn/NiFe/IrMn]5/[NiFe/IrMn]4/NiFe structured exchange-biased multilayer films are designed and prepared by magnetron sputtering. The static and the microwave magnetic properties are systematically investigated. The results reveal that adding partially pinned ferromagnetic layer can effectively broaden the ferromagnetic resonance linewidth toward low frequency domain. Moreover, a wideband multi-peak permeability spectrum with a 3.1-GHz linewidth is obtained by overlapping the spectra of different partially pinned ferromagnetic layers and [antiferromagnet/ferromagnet/antiferromagnet]n stacks. Our results show that the linewidth of the sample can be feasibly tuned through controlling the proper exchange bias fields of different stacks. The designed multilayered thin films have potential application for a tunable wideband high frequency noise filter.

Key words: magnetic multilayer thin films, ferromagnetic resonance, permeability spectra, exchange bias

中图分类号:  (Exchange and superexchange interactions)

  • 75.30.Et
75.60.Ej (Magnetization curves, hysteresis, Barkhausen and related effects) 75.70.Cn (Magnetic properties of interfaces (multilayers, superlattices, heterostructures))