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(a) Geometry of the SyAF structure. (b) Rotation of and out of film plane due to perpendicular component of applied field. (c) Rotation of and toward each other due to demagnetizing fields. (d) Total effective fields at (c). (e)–(f) Complete switching of SyAF structure.
Time evolution of the magnetization. (a) bilayer with , . (b) bilayer with , .
Magnetization trajectories, projected onto the film plane, of the sum and difference magnetization components, corresponding to the curves in Fig. 2. (a) . (b) . The arrows indicate the sense of reversal.
Switching phase diagram for (a) and the (b) bilayers. (c) Phase diagram showing pulsed fields for which direct overwrite (addressing) is possible for the bilayer.
Material parameters for the circular platelet SyAF element, with radius of . The anisotropy energy barriers, , are expressed in thermal energy units corresponding to a temperature of .
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