Flux Closure in Self-Assembled Cobalt Nanoparticle Rings

Steven L. Tripp, Purdue University
Rafal E. Dunin-Borkowski, University of Cambridge
Alexander Wei, Purdue University

Abstract

Chiral magnetic domains are observed when ferromagnetic Co nanoparticles self-assemble into bracelet-like rings. The magnetic dipoles of the particles collectively contribute toward flux closure, a bistable state with potential utility for nonvolatile data storage.