Novel Ultra-Wide Band (10 MHz–26 GHz) Permeability Measurements for Magnetic Films
Novel Ultra-Wide Band (10 MHz–26 GHz) Permeability Measurements for Magnetic Films
复制标题
磁性薄膜的新型超宽带 (10 MHz–26 GHz) 磁导率测量
DOI：
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发表时间：
2018
影响因子：
2.1
通讯作者：
N. Sun
中科院分区：
文献类型：
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作者：
Yunpeng Chen;Xinjun Wang;Huaihao Chen;Yuan Gao;N. Sun
提出了一种用于检测磁性薄膜复磁导率的新型射频磁测量系统，该系统的测量频率范围为10 MHz-26 GHz。该系统基于一个简单的微波发生器和锁定检测装置。采用锁定检测技术，提高了信噪比。对FeGaB厚膜(30 Nm)和超薄NiFe膜(2 Nm)的铁磁共振和复磁导率的测量表明，与现有的最佳磁导仪相比，FeGaB膜具有更宽的频率特性和更高的信噪比。
A new RF magnetic measurement system is proposed to detect complex permeability of magnetic films, of which the measurable frequency range has been demonstrated but not limited to 10 MHz–26 GHz. The system is based on a simple microwave generator and lock-in detection setup. The signal-to-noise ratio (SNR) is enhanced by the lock-in detection technique. Measurements of ferromagnetic resonance and complex permeability on a thick FeGaB film (30 nm) and an ultra-thin NiFe (2 nm) were presented to demonstrate the wider frequency capability and higher SNR as compared with the best available permeameter.