Cobalt Ferrite Nanoparticles from Single and Multi-Component Precursor Systems

Sanjay Mathur (1) , Christian Cavelius (2) , Karsten Moh (2) , Hao Shen (3) , Jürgen Bauer (2)

1 Institute of Inorganic Chemistry
2 INM - Leibniz Institute for New Materials
3 Department of Inorganic and Materials Chemistry

Highly crystalline CoFe2O4 nanoparticles ( ~ 5-6 nm) were synthesized by thermal decomposition of (i) single molecular precursor CoFe2(OtBu)8 and (ii) stoichiometric mixture of individual metal precursors. The precursors were thermolyzed in a high-boiling solvent (Docosane, bp. 369 oC) to produce uniformly dispersed cobalt ferrite nanoparticles in the case of molecular precursor, whereas bimodal distribution of nanoparticles was obtained in the multi-source synthesis. TG/DSC and HR-TEM reveraled single and multi-step decomposition profiles and differential nucleation steps in the two cases, which influence size dispersion and phase purity.

Mots clés: Physical Sciences

Sanjay Mathur, Christian Cavelius, Karsten Moh, Hao Shen, Jürgen Bauer. Cobalt Ferrite Nanoparticles from Single and Multi-Component Precursor Systems. Journal of Inorganic and General Chemistry / Zeitschrift für anorganische und allgemeine Chemie, 2009, 635 (6-7), pp.898. ⟨10.1002/zaac.200900010⟩. ⟨hal-00484129⟩