Figure 2: FMR measurements of CoFe/BFO multiferroic heterostructure.
From: Probing electric field control of magnetism using ferromagnetic resonance
(a) Schematic of CoFe (2.5 nm)/BFO (200 nm) multiferroic heterostructure for FMR measurements at varying angles α between the magnetic field and the easy axis; (b) FMR spectra of CoFe/BFO multiferroic heterostructure measured at open circuit after applying +5 V and −5 V at α=0°.Upper right inset is the relative FMR field dependence on applied voltage; (c) relative FMR field dependence after applied voltage pulses along different orientations of the magnetic field; (d) relative FMR field versus applied voltage pulses after 50 and 100 cycles of a 10-V sinusoidal voltage. Error bars in b–d are defined as the s.d. of five FMR measurements for each FMR data.
