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 elec...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 Hr and peak-to-peak linewidthΔHpp at different angles are regulated.Whenθ=20°,the Hr is regulated up to 82 Oe.Whenθ=70°,ΔHpp 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.展开更多
基金the National Natural Science Foundation of China(Grant Nos.51671099 and 11974149)the Open Foundation Project of Jiangsu Key Laboratory of Thin Films(Grant No.KJS1745)+1 种基金the Program for Changjiang Scholars and Innovative Research Team in University(Grant No.IRT-16R35)the Fundamental Research Funds for the Central Universities。
文摘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 Hr and peak-to-peak linewidthΔHpp at different angles are regulated.Whenθ=20°,the Hr is regulated up to 82 Oe.Whenθ=70°,ΔHpp 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.
