Modulation of Operating Cut-Off Frequency by Spin Pinned of Fe/Ni₈₁Fe₁₉/ Fe Heterogenous Multilayer Films with Different Fe Thicknesses

Abstract:

Multilayer films exhibit high saturation magnetization, high permeability, and high cutoff frequency f_r, applying to magnetic inductors that satisfy both high frequency, miniaturization, and integration. In this work, we fabricate Fe/Ni₈₁Fe₁₉/Fe (t/100/t nm) multilayer films on Si (100) using electron beam evaporation, and investigate the Fe thickness dependence of surface morphology, saturation magnetization, coercivity, and ferromagnetic resonance f_r. The results demonstrate that Fe/Ni₈₁Fe₁₉/Fe (4/100/4 nm) multilayer film possess relatively high saturation magnetization (12.1 kGs), low coercivity (3.1 Oe), and high ferromagnetic resonance f_r (1.93 GHz).

• Periodical: Solid State Phenomena (Volume 330)
• Pages: 153-158
• DOI: https://doi.org/10.4028/p-16tt8d
• Online since: April 2022
• Authors: Zong Sheng He, Chuan Jian Wu, Yi Fan Wang, Xiao Na Jiang, Zhong Yu, Zhong Wen Lan, Ke Sun*
• Keywords: Fe/Ni₈₁Fe₁₉/ Fe Multilayer Films, Ferromagnetic Resonance, High Frequency, Magnetic Property

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