Morphologically Templated Growth of Aligned Spinel CoFe<sub>2</sub> O<sub>4</sub> Nanorods.

Zhang, Z; Rondinone, A J; Ma, J X; Shen, J; Dai, S · Adv Mater · 2005

basic_science · Level V

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Abstract

Uniaxially aligned CoFe<sub>2</sub> O<sub>4</sub> nanorods are obtained by coprecipitation of Co<sup>2+</sup> , Fe<sup>2+</sup> , and C<sub>2</sub> O<sub>4</sub> <sup>2-</sup> ions in a microemulsion solution, and subsequent high-temperature decomposition of CoFe<sub>2</sub> (C<sub>2</sub> O<sub>4</sub> )<sub>3</sub> . Each nanorod is made up of a "tectonic" assembly of CoFe<sub>2</sub> O<sub>4</sub> nanocrystals. Magnetization of such CoFe<sub>2</sub> O<sub>4</sub> materials may lead to their use in high-density magnetic recording media and high-performance electromagnetic and spintronic devices.