Highly Sensitive Magnetic Field Sensing Using Magnetization Dynamics in Yttrium Iron Garnet Single-Crystal Thin Films
Highly Sensitive Magnetic Field Sensing Using Magnetization Dynamics in Yttrium Iron Garnet Single-Crystal Thin Films
复制标题
利用钇铁石榴石单晶薄膜磁化动力学进行高灵敏度磁场传感
DOI：
10.1109/tmag.2019.2895470
复制
发表时间：
2019
影响因子：
2.1
通讯作者：
Endo Yasushi
中科院分区：
文献类型：
--
作者：
Koda Tetsunori;Muroga Sho;Endo Yasushi
我们研究了Bi掺杂钇铁石榴石（YIG）单晶薄膜中磁化动力学的相变，为磁传感的可能应用。通过引入双混频时差法和适当的波导设计，获得的最大相位变化为50°/Oe，这对于心磁信号等小磁场检测的分辨率是可以接受的。因此，使用YIG的这种技术是用于高灵敏度磁场感测的有希望的候选者。
We have studied the phase change of magnetization dynamics in Bi-doped yttrium iron garnet (YIG) single-crystal thin films for a possible application of magnetic sensing. By introducing the dual-mixer time-difference method and the appropriate design of waveguide, the obtained maximum phase change was 50°/Oe. This would be acceptable for the resolution for a small magnetic field detection, such as magnetocardiogram signals. Thus, this technique using YIG is a promise candidate for the highly sensitive magnetic field sensing.