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:
May. 28, 2013
Filed:
Feb. 24, 2012
Laura Heyderman, Zofingen, CH;
Elena Mengotti, Zürich, CH;
Danilo Zanin, Barbengo, CH;
Rajesh Chopdekar, Zürich, CH;
Hans-benjamin Braun, Winterthur, CH;
Remo Huegli, Wolfwil, CH;
Gerard Duff, Shannon, IE;
Laura Heyderman, Zofingen, CH;
Elena Mengotti, Zürich, CH;
Danilo Zanin, Barbengo, CH;
Rajesh Chopdekar, Zürich, CH;
Hans-Benjamin Braun, Winterthur, CH;
Remo Huegli, Wolfwil, CH;
Gerard Duff, Shannon, IE;
Paul Scherrer Institut, Villigen, CH;
Abstract
A method is provided for achieving specific magnetic states with a given vortex chirality in artificial kagome spin ice building block structures containing one or more hexagonal rings of ferromagnetic islands created with electron beam lithography, where a subgroup of the ferromagnetic islands have a smaller width and therefore higher switching field than the other normal (wider) islands and are placed at specific positions in each of the rings. The positioning of the islands determines the magnetic state of the building block structure during magnetization reversal, and determines the chirality of the magnetic vortices that occur in each ring.