(color online) Ionic liquid gating of FMR fields with electrostatic doping dominating the regulation of the magnetism. (a) Angular dependence of the FMR fields. The blue line represents the initial state, the red line represents the state with a 1.5 V gating voltage, and the pink line represents the shift of the FMR fields. 0° indicates the in-plane direction. (b) The FMR phase diagram. The yellow line represents the FMR fields under different applied voltages at 60°. (c) The FMR fields under different applied voltages at 60°. (d) and (c) Reproducible measurements and the same tests after applying +1.5 V for 8 h.^[75]