如何以鐵磁共振法分析非共軸的合成亞鐵磁結構

How to Analyze the Non-Collinear Synthetic Ferrimagnets with Ferromagnetic Resonance

本文將詳細介紹如何使用鐵磁共振法去量測非共軸的合成亞鐵磁結構。此一方法可以彌補傳統靜態的磁化率量測方法對於非共軸磁性多層膜的分析不足之處。利用多個角度的鐵磁共振譜進行擬合，可以求得各鐵磁層準確的磁異向性、磁化強度比值以及磁偶合交互作用等。對應於可見的未來電子自旋元件將使用越來越複雜的磁性多層膜系統，鐵磁共振的技術會在工業應用中扮演重要的角色。 In this report, we demonstrate the method of ferromagnetic resonance to analyze a non-collinear synthetic ferrimagnet. With this method, we make up the shortage of the traditional methods that only allow one to analyze the static magnetizations for non-collinear magnetic multilayers. By fitting the angular dependent ferromagnetic resonance spectra, one could estimate the accurate values for magnetic anisotropy, the magnetization of individual layer and the exchange coupling constant between layers. As the spintronic devices require more and more complex multilayer components in the visible future, the ferromagnetic resonance technology would play an important role in the industrious applications.