Cobalt-substituted magnetite nanoparticles and their assembly into ferrimagnetic nanoparticle arrays

Yongsheng Yu; Adriana Mendoza-Garcia; Bo Ning; Shouheng Sun

doi:10.1002/adma.201300595

Cobalt-substituted magnetite nanoparticles and their assembly into ferrimagnetic nanoparticle arrays

Adv Mater. 2013 Jun 11;25(22):3090-4. doi: 10.1002/adma.201300595. Epub 2013 Apr 30.

Authors

Yongsheng Yu¹, Adriana Mendoza-Garcia, Bo Ning, Shouheng Sun

Affiliation

¹ Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA.

PMID: 23629950
DOI: 10.1002/adma.201300595

Abstract

A simple process to prepare monodisperse ferrimagnetic cobalt-substituted magnetite Co(x)Fe(3-x)O4 nanoparticles is reported. These ferrimagnetic nanoparticles are readily dispersed in hexane, forming a stable ferrimagnetic nanoparticle dispersion, and allowing easy nanoparticle self-assembly. When assembled under an external magnetic field (5.5 kOe), these nanoparticles show preferred magnetic alignment with their H(c) reaching 2.49 kOe.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.