Please use this identifier to cite or link to this item:
Title: Magnetoelectric devices and methods of using same
Authors: Or, SW 
Chan-Wong, HLW 
Issue Date: 3-Apr-2007
Source: US Patent 7,199,495 B2. Washington, DC: US Patent and Trademark Office, 2007.
Abstract: The operational frequency of existing magnetoelectric materials having metallic or ceramic magnetostrictive materials and ceramic piezoelectric materials may be limited to a few kilohertz due to the presence of eddy-current losses in the metallic magnetostrictive phase. Further, these materials may be difficult to machine and fabricate due to their brittleness. Additionally, it may be difficult to tailor and optimize the properties (i.e., magnetoelectric voltage coefficient .alpha..sub.E, etc.) of the devices. This invention provides a magnetoelectric element including at least one set of alternative piezoelectric layer and magnetostrictive composite layer. The magnetostrictive composite layer includes at least one magnetostrictive material dispersed in first concentrated zones within a first polymer matrix, wherein all of said concentrated zones are orientated along a first direction. It is found that the conversion efficiency (i.e., .alpha..sub.E) varies in accordance with applied magnetic control field H.sub.control.
Rights: Assignee: The Hong Kong Polytechnic Univeristy.
Appears in Collections:Patent

Files in This Item:
File Description SizeFormat 
us7199495b2.pdf813.51 kBAdobe PDFView/Open
Show full item record
PIRA download icon_1.1View/Download Full Text

Page view(s)

Last Week
Last month
Citations as of Sep 22, 2020


Citations as of Sep 22, 2020

Google ScholarTM


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.