Cation Distribution Tuning of Solution Combusted CoFe2O4 Powders

Pourgolmohammad, B.; Masoudpanah, S.M.; Aboutalebi, M.R.

doi:10.22068/ijmse.15.2.67

Volume 15, Issue 2 (June 2018) IJMSE 2018, 15(2): 67-75 | Back to browse issues page

‎ 10.22068/ijmse.15.2.67

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Pourgolmohammad B, Masoudpanah S, Aboutalebi M. Cation Distribution Tuning of Solution Combusted CoFe2O4 Powders. IJMSE 2018; 15 (2) :67-75
URL: http://ijmse.iust.ac.ir/article-1-1015-en.html

Cation Distribution Tuning of Solution Combusted CoFe2O4 Powders

B. Pourgolmohammad

, S.M. Masoudpanah

, M.R. Aboutalebi

Abstract: (15408 Views)

In this work, the different fuels (citric acid, glycine and urea) were used for solution combustion synthesis of CoFe₂O₄ powders. X-ray diffraction, Raman spectroscopy, electron microscopy and vibrating sample magnetometry techniques were employed for characterization of phase evolution, cation distribution, microstructure and magnetic properties of the as-combusted CoFe₂O₄ powders. Single phase CoFe₂O₄ powders with partially inverse structure in which the Co²⁺ cations are distributed in both tetrahedral and octahedral sites were synthesized by the citric acid, glycine and urea fuels. The as-combusted CoFe₂O₄ powders by the citric acid fuel exhibited the highest inversion coefficient. The crystallite size of the as-combusted CoFe₂O₄ powders synthesized by urea fuel was 15 nm, increased to 41 and 52 nm for the glycine and citric acid fuels, respectively. Furthermore, the solution combusted CoFe₂O₄ powders showed ferromagnetic behavior with saturation magnetization of 61.9, 63.6 and 41.6 emu/g for the citric acid, glycine and urea fuels, respectively. The high crystallinity and particle size of the as-combusted CoFe₂O₄ powders using glycine fuel led to the highest magnetization and the moderate coercivity.

Keywords: Fuel, Cation distribution, Inversion coefficient, Magnetic properties