Synthesis and characterisation of Ni0.25Co0.75Fe2O4 nanostructures

Abstract

The synthesis of Ni_0.25Co_0.75Fe₂O₄ nanoparticles has been achieved by a simple thermal decomposition method from the inorganic precursor, Ni_0.25Co_0.75Fe₂(cin)₃(N₂H₄)_5, which was obtained by a novel precipitation method from the corresponding metal salts, cinnamic acid and hydrazine hydrate. The precursor was characterised by hydrazine and metal analyses, infrared spectral analysis and thermo gravimetric analysis. On appropriate annealing, Ni_0.25Co_0.75Fe₂(cin)₃(N₂H₄)₅ yielded Ni_0.25Co_0.75Fe₂O₄ nanoparticles, which were characterised for their size and structure using X-ray diffraction (XRD), high resolution transmission electron microscopic (HRTEM), selected area electron diffraction (SAED) and scanning electron microscopic (SEM) techniques.  

KEY WORDS: Ni_0.25Co_0.75Fe₂O₄ nanoparticles, XRD, HRTEM, SAED, SEM

Bull. Chem. Soc. Ethiop. 2016, 30(1), 79-85.

DOI: http://dx.doi.org/10.4314/bcse.v30i1.7