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STRUCTURAL, MORPHOLOGICAL CHARACTERIZATION OF Fe_2-xAl_xCoO₄ NANOPARTICLES SYNTHESIZED BY SOL-GEL METHOD

A. T. RAGHAVENDER

Department of Physics, Swami Ramanand Teerth Marathwada University, Nanded, Maharastra – 431606, India

Corresponding author.

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and

K. M. JADHAV

Department of Physics, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, Maharastra – 431004, India

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https://doi.org/10.1142/S0217979209049796Cited by:4 (Source: Crossref)

Abstract

A series of Fe_2-xAl_xCoO₄ ferrite nanoparticles have been synthesized by sol-gel method. Powder X-ray diffraction (XRD), thermo gravimetric (TG) and differential thermal analysis (DTA), transmission electron microscopy (TEM) and IR spectroscopy analysis were employed to study structural and morphological characterization of these ferrite nanoparticles. The effect of substitution of Fe³⁺ by Al³⁺ ions on the structural properties of cobalt ferrite nanoparticles was investigated. The crystallite (D) is found in the range 39 nm to 6 nm, which decreases with increasing aluminum content. The values of lattice parameters (a), X-ray density (d_x), hopping length (L_A, L_B) decreases with aluminum content. The tetrahedral bond (d_AX), octahedral bond (d_BX), tetra edge (d_AXE) and octa edge (d_BXE) (shared and unshared) showed the linear decrease with the increasing aluminum content x. IR spectroscopy analysis revealed the chemical and structural changes taking place in the combustion reaction.

Keywords:

PACS: 75.75.+a, 73.63.Bd, 64.70.Nd, 07.57.Ty, 68.37.Lp

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