Morphologically Templated Growth of Aligned Spinel CoFe2O4 Nanorods

Authors


  • This work was supported by the Office of Basic Energy Sciences, US Department of Energy. The Oak Ridge National Laboratory is managed by UT-Battelle, LLC for the US Department of Energy under Contract DE-AC05-00OR22725. This research was supported in part by an appointment for Z.T.Z. to the ORNL Research Associates Program, administered jointly by ORNL and the Oak Ridge Institute for Science and Education.

Abstract

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Uniaxially aligned CoFe2O4 nanorods (see Figure) are obtained by coprecipitation of Co2+, Fe2+, and C2O42– ions in a microemulsion solution, and subsequent high-temperature decomposition of CoFe2(C2O4)3. Each nanorod is made up of a “tectonic” assembly of CoFe2O4 nanocrystals. Magnetization of such CoFe2O4 materials may lead to their use in high-density magnetic recording media and high-performance electromagnetic and spintronic devices.

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