Bistable magnetostrictive device and methods of manufacture

Details Bistable magnetostrictive device and methods of manufacture Bistable magnetostrictive device and methods of manufacture

H - Electricity

01

L

352/81, 356/94

H01L 41/12 (2006.01) G11C 11/12 (2006.01) H01L 41/22 (2006.01)

Patent

CA 1111969

BISTABLE MAGNETOSTRICTIVE DEVICE AND METHODS OF MANUFACTURE Abstract of the Disclosure A device includes a core, such as a wire or cylinder of a solid material such as nonmagnetic metal, coated with a film of a material having a high degree of magnetostriction and a uniaxial helical magnetic anisotropy at an oblique angle to the longitudinal axis of the core. The device has the characteristic of being magnetically bistable and of providing a large magnetic pulse as it changes to one of its stable states in response to passage of a magnetic field by it. To achieve a helical magnetic anisotropy, the magnetostrictive film can be applied to a nonmagnetic wire by plating the wire while it is under torsion, twisting a plated wire after plating, or by applying an electric current and a magnetic field to the wire as the film is being plated or annealed.

309350

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