The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 07, 2010
Filed:
Dec. 29, 2009
Wouter Eyckmans, Geel, BE;
Liesbet Lagae, Herent, BE;
Wouter Eyckmans, Geel, BE;
Liesbet Lagae, Herent, BE;
IMEC, Leuven, BE;
Abstract
The present invention relates to a device and corresponding method for ultrafast controlling of the magnetization of a magnetic element. A device () includes a surface acoustic wave generating means (), a transport layer (), which is typically functionally and partially structurally comprised in said SAW generating means (), and at least one ferromagnetic element (). A surface acoustic wave is generated and propagates in a transport layer () which typically consists of a piezo-electric material. Thus, strain is induced in the transport layer () and in the ferromagnetic element () in contact with this transport layer (). Due to magneto elastic coupling this generates an effective magnetic field in the ferromagnetic element (). If the surface acoustic wave has a frequency substantially close to the ferromagnetic resonance (FMR) frequency νthe ferromagnetic element () is absorbed well and the magnetization state of the element can be controlled with this FMR frequency. The device can be used in an RF-magnetic resonator, a sensor and a camera. The corresponding method can be used for ultrafast reading-out and switching of magnetic components and in magnetic logic.