Nano Science and Technology Institute
Nanotech 2006 Vol. 1
Nanotech 2006 Vol. 1
Technical Proceedings of the 2006 NSTI Nanotechnology Conference and Trade Show, Volume 1
 
Chapter 4: Nanoparticle Processes & Applications
 

Structural and Magnetic Properties study of CoFe2O4 Nanopowder prepared by Mechanical Milling using metallic Cobalt and Hematite powder Blend

Authors:A. Beitollahi, R. Sani, Yu.V. Maksimov and I.P. Suzdalev
Affilation:Iran University of Science and Technology (IUST), IR
Pages:431 - 434
Keywords:nanopowder, cobalt ferrite, mechanical activation
Abstract:In this work we report the phase formation and magnetic properties of CoFe2O4 nanopowder prepared by mechanical alloying technique using metallic cobalt and hematite powder (1:1 molar ratio) as the initial raw material in ambient air atmosphere. The formation of single phase cobalt ferrite of (Co2+ 0.18Fe3+ 0.82)[Co2+ 0.82 Fe3+ 1.18]O4 stoichiometry was confirmed for the samples milled above 15 hours without any heat-treatment by XRD and Mössbauer techniques. The average crystallite size of the sample milled for 30 h was ~ 13 nm. The highest room temperature value of the saturation magnetization (51 e.m.u./g) was obtained for the sample milled for 25h which was much lower than the corresponding value of the bulk cobalt ferrite due to the size effect.
Structural and Magnetic Properties study of CoFe2O4 Nanopowder prepared by Mechanical Milling using metallic Cobalt and Hematite powder BlendView PDF of paper
ISBN:0-9767985-6-5
Pages:871
Hardcopy:$119.95
 
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