31 March 2009 Magnetoelectric device demonstrating nanoscale magnetic domain control
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We report electric field control of nanoscale magnetic domain pattern transformation processes due to the converse magnetoelectric effect in a magnetoelectric device. The magnetoelectric device is a Ni-microdot/PZT-film bi-layer heterostructure. Due to the converse magnetoelectric effect, nanoscale magnetic domain (i.e. dot-domain/pseudo-single-domain/ short-stripe-domain/vortex-core) in the central region of a Ni microdot is controlled under an electric field (1.6 MV/m). The electric field induced domain-pattern transformation process (i.e. deformation and rotation of the nanoscale domain in the central region of the Ni microdot) is observed with the magnetic force microscopy. Upon removal of the electric field, the deformed/rotated nanoscale magnetic domain-pattern/vortex-core returns to its original state, i.e. reversible domain-pattern-transformation/vortex-core-motion.
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Tien-Kan Chung, Tien-Kan Chung, Scott Keller, Scott Keller, Gregory P. Carman, Gregory P. Carman, "Magnetoelectric device demonstrating nanoscale magnetic domain control", Proc. SPIE 7289, Behavior and Mechanics of Multifunctional Materials and Composites 2009, 72891S (31 March 2009); doi: 10.1117/12.815890; https://doi.org/10.1117/12.815890

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