Al and PEG Effect on Structural and Physicochemical Properties of CoFe2O4

AUTOR(ES)

Mostaghni, Fatemeh, Abed, Yasaman

FONTE

Mat. Res.

DATA DE PUBLICAÇÃO

06/03/2017

RESUMO

In this work, pure and Alumina doped cobalt ferrite nanoparticles CoFe2−xAlxO4 (for x = 0.44) have been synthesized by the sol gel method. The influence of alumina doping on the morphological and mechanical properties of CoFe2O4 nano-particles were investigated by means of X-ray powder diffraction (XRD) and rietveld analysis. XRD analysis confirmed that the single phase formation of pure nano particles with the expected cubic inverse spinel structure with Fd3m space group and without any impurity phase. Alumina doping were led to a decrease in the crystallite size, lattice parameter, elastic constants and magnitude of moduli. It is explained on the basis of the replacement of Fe ions with half-filled d-shell (3d5) and larger radius by Al3+ ions with a completely filled shell (2p6) and smaller radius.

Documentos Relacionados

• Catalytic Ozonation of Melanoidin in Aqueous Solution over CoFe2O4 Catalyst
• Sinterização ultra-rápida de pós submicrométricos de CoFe2O4 por micro-ondas
• Propriedades eletromagnéticas de amostras policristalinas de CoFe2O4 na faixa de RF e microondas.
• Gold Supported on Strontium Surface-Enriched CoFe2O4 Nanoparticles: a Strategy for the Selective Oxidation of Benzyl Alcohol
• Espectroscopia Raman em nanocompósitos de O /SiO preparados pelo método Sol-Gel CoFe 2 4 2