講演情報
[22a-P01-32]YIG/CoFeB µ-dot and µ-ring array devices as spin wave stopband notch filter
〇(D)Ahamed Ikball1, Md Shamim Sarker1, Hiroyasu Yamahara1, Munetoshi Seki1, Hitoshi Tabata1 (1.The Univ. of Tokyo)
キーワード：
Spin wave、Spin wave modulation、Microwave filter
Spin wave (SW) is a collective motion of electron spin propagating in the order of magnetic materials or media. SW can be modulated by the wide range of physical parameters which makes it suitable for a wide range of applications starting from sensors to analog and digital computing devices. This study aims to observe the spin wave propagation characteristics in YIG/CoFeB µ-dot and µ-ring bilayer array devices. We observed a noticeable sharp rejection in the frequency band in µ-dot and µ-ring bilayer array devices. We measured the notch width as 10 MHz and the stopband (difference between two half power point) is calculated as 5 MHz. This type of bilayer array structure can be implemented as high-frequency SW notch filter and the frequency selectivity can be tuned by varying the dot and the array size.