Performance of crossed anisotropy multilayered CoZrNb films as IC chip level electromagnetic noise suppressor

Yutaka Shimada; Jingyan Ma; Tetsuo Ito; Kunio Yanagi; Yasushi Endo; Sho Muroga; Masahiro Yamaguchi

doi:10.1109/TMAG.2014.2331854

Performance of crossed anisotropy multilayered CoZrNb films as IC chip level electromagnetic noise suppressor

Yutaka Shimada, Jingyan Ma, Tetsuo Ito, Kunio Yanagi, Yasushi Endo, Sho Muroga, Masahiro Yamaguchi

Tohoku University

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

Co-Zr-Nb multilayers with crossed anisotropy along with multilayers with uniaxial anisotropy were investigated from the standpoint of electromagnetic noise suppressors. Frequency dependences of conduction losses and magnetic near field intensity of a microstrip line (MSL) covered with these multilayers were measured simultaneously. It was found that ferromagnetic resonance excited by RF field from MSL takes a major role of noise suppression over a wide frequency. The ferromagnetic resonance frequency is determined by intrinsic anisotropy field. In addition, shape anisotropy field caused by presence of MSL is negligibly small. The in-plane isotropy feature of noise suppressing performance for the crossed anisotropy films was verified experimentally and numerically.

Original language	English
Article number	6971310
Journal	IEEE Transactions on Magnetics
Volume	50
Issue number	11
DOIs	https://doi.org/10.1109/TMAG.2014.2331854
Publication status	Published - 2014 Nov 1

Keywords

Co-Zr-Nb
Conductive loss
electromagnetic noise suppressor
ferromagnetic resonance (FMR)
integrated circuit (IC) chip
microstrip line (MSL)
near field
permeability thin film

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10.1109/TMAG.2014.2331854

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title = "Performance of crossed anisotropy multilayered CoZrNb films as IC chip level electromagnetic noise suppressor",

abstract = "Co-Zr-Nb multilayers with crossed anisotropy along with multilayers with uniaxial anisotropy were investigated from the standpoint of electromagnetic noise suppressors. Frequency dependences of conduction losses and magnetic near field intensity of a microstrip line (MSL) covered with these multilayers were measured simultaneously. It was found that ferromagnetic resonance excited by RF field from MSL takes a major role of noise suppression over a wide frequency. The ferromagnetic resonance frequency is determined by intrinsic anisotropy field. In addition, shape anisotropy field caused by presence of MSL is negligibly small. The in-plane isotropy feature of noise suppressing performance for the crossed anisotropy films was verified experimentally and numerically.",

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AU - Shimada, Yutaka

AU - Ma, Jingyan

AU - Ito, Tetsuo

AU - Yanagi, Kunio

AU - Endo, Yasushi

AU - Muroga, Sho

AU - Yamaguchi, Masahiro

PY - 2014/11/1

Y1 - 2014/11/1

N2 - Co-Zr-Nb multilayers with crossed anisotropy along with multilayers with uniaxial anisotropy were investigated from the standpoint of electromagnetic noise suppressors. Frequency dependences of conduction losses and magnetic near field intensity of a microstrip line (MSL) covered with these multilayers were measured simultaneously. It was found that ferromagnetic resonance excited by RF field from MSL takes a major role of noise suppression over a wide frequency. The ferromagnetic resonance frequency is determined by intrinsic anisotropy field. In addition, shape anisotropy field caused by presence of MSL is negligibly small. The in-plane isotropy feature of noise suppressing performance for the crossed anisotropy films was verified experimentally and numerically.

AB - Co-Zr-Nb multilayers with crossed anisotropy along with multilayers with uniaxial anisotropy were investigated from the standpoint of electromagnetic noise suppressors. Frequency dependences of conduction losses and magnetic near field intensity of a microstrip line (MSL) covered with these multilayers were measured simultaneously. It was found that ferromagnetic resonance excited by RF field from MSL takes a major role of noise suppression over a wide frequency. The ferromagnetic resonance frequency is determined by intrinsic anisotropy field. In addition, shape anisotropy field caused by presence of MSL is negligibly small. The in-plane isotropy feature of noise suppressing performance for the crossed anisotropy films was verified experimentally and numerically.

KW - Co-Zr-Nb

KW - Conductive loss

KW - electromagnetic noise suppressor

KW - ferromagnetic resonance (FMR)

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KW - permeability thin film

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Performance of crossed anisotropy multilayered CoZrNb films as IC chip level electromagnetic noise suppressor

Abstract

Keywords

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