Self-assembly and flux closure studies of magnetic nanoparticle rings
Abstract
Thermoremanent magnetic nanoparticles (MNPs) can self-assemble into rings through dipolar interactions, when dispersed under appropriate conditions. Analysis of individual MNP rings and clusters by off-axis electron holography reveals bistable flux closure (FC) states at ambient temperatures, and their reversible switching by magnetic field gradients. We introduce a line-bond formalism to describe the coupling between MNPs.
Keywords
ENCAPSULATED NANOPARTICLES; MAGNETOTACTIC BACTERIA; ELECTRON HOLOGRAPHY; RECORDING MEDIA; NANORINGS; STABILITY; ARRAYS; NANOMATERIALS; NANOCRYSTALS; REVERSAL
DOI
10.1039/c1jm11916h
Citation
J. Mater. Chem., 2011,21, 16686-16693 DOI: 10.1039/C1JM11916H
Date of this Version
2011
Recommended Citation
Wei, Alexander; Kasama, Takeshi; and Dunin-Borkowski, Rafal E., "Self-assembly and flux closure studies of magnetic nanoparticle rings" (2011). Birck and NCN Publications. Paper 1073.
http://dx.doi.org/10.1039/c1jm11916h