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Yongsheng Yu, Adriana Mendoza-Garcia, Bo Ning and Shouheng Sun Cobalt-Substituted Magnetite Nanoparticles and Their Assembly into Ferrimagnetic Nanoparticle Arrays Advanced Materials 25

Article first published online: 30 APR 2013 | DOI: 10.1002/adma.201300595

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A simple process to prepare monodisperse ferrimagnetic cobalt-substituted magnetite CoxFe3-xO4 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 Hc reaching 2.49 kOe.

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