Figure 4
Process of magnetization reversal controlled by pulsed electric fields with the assistance of magnetic fields H//[100] = ±5 Oe.
(a) M-H curves with E = 20 kV/cm on (pink circle) and off (blue square) along the [100] direction. (b) Variation of magnetization (light blue square) with magnetic field and electric pulse (red line) at different time. (c) Configuration of the magnetization reversal by pulsed electric fields with the assistance of external magnetic fields (H). The left panel shows the deformation as well as polarizations in the (011) plane of PMN-PT controlled by switching electric field off/on and the right panel shows the induced magnetic anisotropy (denoted by colored dumbbells), easy axis (EA, denoted by broad bidirectional arrows) as well as magnetization (M, denoted by broad unidirectional arrows inside dashed circles and the broad bent arrow represents the magnetization which is rotating) change in the CoFeB film. (d) The sketch of the detailed switching process of magnetization controlled by pulsed electric fields, in which the auxiliary magnetic fields (H) are denoted by arrows with broken tails and the deformation (D) of the (011) crystal plane is denoted by a rectangle. The four different steps of magnetization denoted by letters I ~ IV in (a) and (b) correspond to the diagrammatic states in (c) and (d) and the colors of the vertical bars in (a), background in (b) and arrows in (c) and (d) representing different magnetic fields are consistent.
