Impact of Complex Permeability Measurements Up to Millimeter-Wave Frequency Range

Impact of Complex Permeability Measurements Up to Millimeter-Wave Frequency Range
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毫米波频率范围内复杂磁导率测量的影响

DOI:
10.1109/tmag.2020.3011971
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发表时间:
2021
影响因子:
2.1
通讯作者:
Sai R.
Sai R.
中科院分区:
工程技术4区
文献类型:
--
作者:
Yabukami S.;Nozawa K.;Tonthat L.;Okita K.;Sai R.

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开发了一种使用柔性基板的高灵敏度微带线型探头,用于连续测量高达毫米波频率范围(超过 30 GHz)的薄膜磁导率。该探头可实现宽带宽和高灵敏度磁导率测量,且不受样本大小的限制。对CoFeB薄膜(45mm×25mm,厚度0.5μm)、CoNbZr薄膜(25mm×25mm,厚度3nm)和镍铁氧体薄膜(8mm×5mm,厚度1.2μm)的复磁导率进行了优化。测量的磁导率谱和铁磁共振频率与基于 Landau-Lifshitz-Gilbert 方程和高达 67 GHz 的涡流生成的理论值非常吻合。
A highly sensitive microstrip-line-type probe using a flexible substrate was developed to measure thin-film permeability continuously up to the millimeter-wave frequency range (over 30 GHz). The probe enables broad bandwidth and highly sensitive permeability measurements without sample size limitations. The complex permeability of the CoFeB film (45 mm × 25 mm and 0.5 μm in thickness), CoNbZr film (25 mm × 25 mm and 3 nm in thickness), and nickel ferrite film (8 mm × 5 mm, and 1.2 μm in thickness) were optimized. The measured permeability spectrum and ferromagnetic resonance frequency showed good agreement with the theoretical values based on the Landau-Lifshitz-Gilbert equation and eddy current generation up to 67 GHz.
DOI: 10.1109/9780470546314
发表时间: 1998
期刊: --
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