Near-ideal (colossal) Magnetoelectricity in High-Permeability Magnetostrictive/Piezo/Fiber Laminates

Description:
Manetoelectricity is the interaction between the polarization and manetization subsystems of a solid.  Giant mangeto-electric (ME) effects are known in laminate composites of magnetostrictive and piezoelectric layers, which are orders of magnitude higher than those of single phase systems. Theoretically, the longitudinally-magnetized longitudinally-poled (L-L) laminate configuration should have much higher ME effects; however, prior experimental studies have failed to find such enhancement.  This invention presents an L-L configuration with near-ideal ME coupling with colossal ME effects--having more than an order of magnitude higher than the giant ME effects.
Patent Information:
Title App Type Country Serial No. Patent No. File Date Issued Date Expire Date
Method and Apparatus for High-Permeability Magnetostrictive/Piezo-Fiber Laminates Having Colossal, Near-Ideal Magnetoelectricity US Utility *United States 11/832,564 7,771,846 8/1/2007 8/10/2010 10/18/2027
Category(s):
Materials
For Information, Contact:
Li Chen
Licensing Associate
Virginia Tech Intellectual Properties, Inc.
(540) 443-9217
lchen@vtip.org
Inventors:
Dwight Viehland
Shu-Xiang Dong
Jie-Fang Li
Junyi Zhai
Keywords:
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