We report that the ferromagnetic resonance (FMR) response of the CoFeB/HfO₂ heterostructures is stabilized and reversibly manipulated by ionic gel. Ionic gel with excellent flexibility is used as a medium to form an electric field. When a 4 V gate voltage is applied, the resonance field H _r and peak-to-peak linewidth ΔH _pp at different angles are regulated. When θ = 20, the H _r is regulated up to 82 Oe. When θ = 70, ΔH _pp is tuned up to 75 Oe. When the gate voltage is repeatedly applied, the FMR spectra can be freely switched between the initial state and the gated state. Our study provides an effective method to manipulate the damping of the magnetic film stably and reversibly.

我们报告了CoFeB/HfO ₂异质结构的铁磁共振(FMR) 响应被离子凝胶稳定和可逆地操纵。具有优异柔韧性的离子凝胶用作形成电场的介质。当施加 4 V 栅极电压时，谐振场H _r和不同角度的峰峰线宽 Δ H _{pp得到调节。}当θ = 20 时，H _r被调节到 82 Oe。当θ = 70 时，ΔH _pp调到 75 Oe。当重复施加栅极电压时，FMR光谱可以在初始状态和门控状态之间自由切换。我们的研究提供了一种稳定且可逆地控制磁膜阻尼的有效方法。