LAUSR

Abstract We report about the electric-field control of magnetic properties in a perpendicularly magnetized Co 0.25 Pd 0.75 film deposited on PMN-PT (lead magnesium niobate-lead titanate) substrate. The effective perpendicular anisotropy coefficient K eff is efficiently tuned via the electric field up to 2 MV/m from 2.5 × 10 4 to 0.8 × 10 4  J/m 3 , which leads to the change of the effective magnetic anisotropy field μ 0 Δ H e f f  = −45 mT. With a time-resolved magneto-optical Kerr effect, we observed the precession frequency change Δf  = 0.8 GHz. Our simulation estimates that this value corresponds to Δf  = −3 GHz and Δf/f  = −0.23 in a scheme of ferromagnetic resonance measurement.