Abstract
We demonstrated that magnetic damping and natural resonance frequency could be modulated by the electric field in an FeCo layer on Pb(Mg1/3Nb2/3)O3-PbTiO3 (PMN-PT) heterostructures by the microstrip method with a vector network analyzer. Strain mediated natural resonance increased from 0.8 to 2 GHz with increasing the electric field from 0 to 12.5 kV cm−1. Furthermore, the magnetic damping factor increased from 0.008 to 0.225, which resulted from magnetization precession under a microwave field and interface charge mediated spin current due to the spin screening effect. The results were also validated by the measurements of ferromagnetic resonance, which was also clear from analysis of the intrinsic and extrinsic contributions to the magnetic damping. In addition, in-plane uniaxial static magnetic anisotropy field was also modulated from 8 to 200 Oe with a different electric field.
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