Venable LLP
Magneto-electronic devices and methods of production
A magneto-electronic device includes a first electrode, a second electrode spaced apart from the first electrode, and an electric-field-controllable magnetic tunnel junction arranged between the first electrode and the second electrode. The electric-field-controllable magnetic tunnel junction includes a first ferromagnetic layer, an insulating layer formed on the first ferromagnetic layer, and a second ferromagnetic layer formed on the insulating layer. The first and second ferromagnetic layers have respective first and second magnetic anisotropies that are alignable substantially parallel to each other in a first state and substantially antiparallel in a second state of the electric-field-controllable magnetic tunnel junction. A current of tunneling electrons through the insulating layer is greater in the first state than the second state, and a voltage applied between the first and second electrodes causes a change in at least one of a magnetic anisotropy energy, coercivity or domain wall velocity of at least one of the first and second ferromagnetic layers or a tunneling potential energy barrier through the insulating layer to at least assist in changing the electric-field-controllable magnetic tunnel junction from at least one of the first and second states to the other of the first and second states.
THE JOHNS HOPKINS UNIVERSITY
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Chia-Ling Weigang
Chien Wang