Reversal of Flux Closure States in Cobalt Nanoparticle Rings With Coaxial Magnetic Pulses

Takeshi Kasama, University of Cambridge
Rafial E. Dunin-Borkowski, University of Cambridge
Michael R. Scheinfein, Simon Fraser University
Steven L. Tripp, Purdue University - Main Campus
Jie Liu, Purdue University - Main Campus
Alexander Wei, Birck Nanotechnology Center, Purdue University

Abstract

Bistable flux closure (FC) states in Co nanoparticle rings can be switched reversibly by applying a coaxial magnetic field (H-z). The FC switching phenomena can be reproduced by micromagnetics simulations, which also reveal novel magnetic states at intermediate applied field strengths.

Discipline(s)

Nanoscience and Nanotechnology