用于铁磁薄膜磁性探测的低温单端口铁磁共振光谱仪的短路共面波导
A short-circuited coplanar waveguide for low-temperature single-port ferromagnetic resonance spectroscopy set-up to probe the magnetic properties of ferromagnetic thin films
摘要：
提出、设计并实现了一种一端短接的共面波导，用于测量磁性薄膜的性质，作为矢量网络分析仪铁磁共振（VNA-FMR）光谱装置的一部分。其结构简单，应用前景广阔，易于安装在低温恒温器室中，特别适用于低温测量。它提供了一个宽频带的频率在千兆赫范围内的FMR测量所必需的。我们的光谱设置与短路共面波导已被用来提取吉尔伯特阻尼系数和有效磁化强度值的标准铁磁薄膜如Py和Co的厚度和温度依赖的研究这些磁性参数也已经在这里为上述磁性样品。
英文摘要：
A coplanar waveguide shorted in one end is proposed, designed, and implemented successfully to measure the properties of magnetic thin films as a part of the vector network analyzer ferromagnetic resonance (VNA-FMR) spectroscopy set-up. Its simple structure, potential applications and easy installation inside the cryostat chamber made it advantageous especially for low-temperature measurements. It provides a wide band of frequencies in the gigahertz range essential for FMR measurements. Our spectroscopy set-up with short-circuited coplanar waveguide has been used to extract Gilbert damping coefficient and effective magnetization values for standard ferromagnetic thin films like Py and Co. The thickness and temperature dependent studies of those magnetic parameters have also been done here for the afore mentioned magnetic samples.
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