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J Appl Phys. 2009 Apr 01;105(7):7B508. doi: 10.1063/1.3072028. Epub 2009 Feb 06.

Synthetic antiferromagnetic nanoparticles with tunable susceptibilities.

Journal of applied physics

Wei Hu, Robert J Wilson, Christopher M Earhart, Ai Leen Koh, Robert Sinclair, Shan X Wang

PMID: 19529797 PMCID: PMC2685219 DOI: 10.1063/1.3072028

Abstract

High-moment monodisperse disk-shaped Co-Fe magnetic nanoparticles, stable in aqueous solution, were physically fabricated by using nanoimprinted templates and vacuum deposition techniques. These multilayer synthetic antiferromagnetic nanoparticles exhibit nearly zero magnetic remanence and coercivity, and susceptibilities which can be tuned by exploiting interlayer magnetic interactions. In addition, a low cost method of scaling up the production of sub-100 nm synthetic antiferromagnetic nanoparticles is demonstrated.

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