Spin-Wave Linewidth Measurement of Microwave Gyromagnetic Materials in a Low RF Power

被引：1

作者：

Long, Jiawei ^{[1
]}

Xi, Jinglei ^{[2
]}

Tu, Yihang ^{[1
]}

Qin, Lin ^{[1
]}

Gao, Yong ^{[1
]}

Zhang, Yunpeng ^{[1
]}

Gao, Chong ^{[1
]}

Li, En ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, Sch Elect Sci & Engn, Chengdu 611731, Sichuan, Peoples R China

[2] East China Inst Comp Technol, Shanghai 201808, Peoples R China

来源：

IEEE SENSORS JOURNAL | 2021年 / 21卷 / 20期

基金：

中国国家自然科学基金;

关键词：

Magnetic resonance; Radio frequency; Gyromagnetism; Saturation magnetization; Microwave measurement; Dielectrics; Microwave theory and techniques; Spin-Wave linewidth; microwave; gyromagnetic material; low RF power; high Q resonator; magnetic compression; INSTABILITY THRESHOLD;

D O I：

10.1109/JSEN.2021.3101286

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, a novel test system for spin-wave linewidth has been proposed. As the traditional test system requires a high-power RF source, a high Q cylindrical resonator with efficiency compression of microwave magnetic field is designed by a partially filled dielectric in this paper. Experimental results show that this method can achieve spin-wave linewidth measurement with lower RF power compare to the original rectangular cavity. Simultaneous, replacing the traditional tuned resonant cavity with the frequency adjustable signal source can reduce the system interference to cavity field distribution and lays the foundation for fully automated testing. Finally, the wide linewidth spin-wave linewidth test is realized in a low RF power environment, and the test uncertainty for the system is estimated within +/- 10 %.

引用

页码：23362 / 23369

页数：8

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