Synthesis and self-assembly of ferromagnetic/ferrimagnetic nanoparticles are importantfor magnetic data storage application in hard disk drive and magnetic tape. In order to get high density data storage, uniform size and shape of the nano-building blocks are needed. As an important ferrimagnetic material, cobalt ferrite (CoFe2O4) shows very high magnetic anisotropy and coercivity, which is a desirable system for this application. Here I will discuss a facile synthesis of monodisperse CoxFe3-xO4 nanocubes through thermal decomposition of Fe(acac)3 and Co(acac)2. The magnetic properties can be easily tuned by controlling the size of the cube and composition of Co in cobalt ferrite. Using the self-assembly process, large-area monolayer assembly of the nanocubes is fabricated, which shows great potential as magnetic recording medium for data storage applications.

Monolayer assembly of ferrimagnetic CoxFe3-xO4 nanocubes for magnetic recording

248th National Meeting (2014)

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