Stress-Enhanced Interlayer Exchange Coupling and Optical-Mode FMR Frequency in Self-Bias FeCoB/Ru/FeCoB Trilayers

• Published in: ACS applied materials & interfaces Vol. 10; no. 10; pp. 8853 - 8859
• Main Authors: Li, Shandong, Miao, Guo-Xing, Cao, Derang, Li, Qiang, Xu, Jie, Wen, Zheng, Dai, Youyong, Yan, Shishen, Lü, Yueguang
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 14.03.2018
• Subjects: acoustics; anisotropy; engineering; ferrimagnetic materials; films (materials); magnetism; stress response; interlayer exchange coupling; uniaxial stress; optical-mode FMR; ferromagnetic resonance; antiferromagnetic coupling

Nowadays, the most popular method to increase ferromagnetic resonance (FMR) frequency (f r) in self-bias soft magnetic films is to improve the anisotropy field H K. However, to push f r to higher frequencies only via raising H K becomes increasingly challenging because f r is already higher than 10...