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Concave nanomagnets with widely tunable anisotropy

United States Patent

8,766,754
July 1, 2014
View the Complete Patent at the US Patent & Trademark Office
A nanomagnet having widely tunable anisotropy is disclosed. The disclosed nanomagnet is a magnetic particle with a convex shape having a first magnetically easy axis. The convex shape is modified to include at least one concavity to urge a second magnetically easy axis to form substantially offset from the first magnetically easy axis. In at least one embodiment, the convex shape is also modified to include at least one concavity to urge a second magnetically easy axis to form with a magnetic strength substantially different from the first magnetically easy axis.
Lambson; Brian (Berkeley, CA), Gu; Zheng (Emeryville, CA), Carlton; David (Berkeley, CA), Bokor; Jeffrey (Piedmont, CA)
The Regents of the University of California (Oakland, CA)
13/ 551,764
20140022036
July 18, 2012
GOVERNMENT FUNDING This invention was supported in part by the DARPA NonVolatile Logic Program, the Western Institute of Nanoelectronics (WIN) and the Center for Energy Efficient Electronics Sciences (NSF Award Number ECCS-0939514). Work at the Molecular Foundry and the Advanced Light Source, Lawrence Berkeley National Laboratory was supported by the Director, Office of Science, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering of the US Department of Energy under Contract No. DE-AC02-OSCI-II 1231. The United States Government has certain rights in this invention.