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Cu2+ and Al3+ co-substituted cobalt ferrite: structural analysis, morphology and magnetic properties

Dabagh, Shadab and Ati, Ali A. and Ghoshal, S. K. and Zare, Samad and Rosnan, R. M. and Jbara, Ahmed S. and Othaman, Zulkafli (2016) Cu2+ and Al3+ co-substituted cobalt ferrite: structural analysis, morphology and magnetic properties. Bulletin of Materials Science, 39 (4). pp. 1029-1037. ISSN 0250-4707

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Official URL: http://dx.doi.org/10.1007/s12034-016-1233-8

Abstract

Cu-Al substituted Co ferrite nanopowders, Co1-xCux Fe2-x Alx O4 (0.0 ≤ x ≤ 0.8) were synthesized by the co-precipitation method. The effect of Cu-Al substitution on the structural and magnetic properties have been investigated. X-ray diffraction (XRD) spectroscopy, Fourier transform infrared (FTIR) spectroscopy, field emission scanning electron microscopy (FESEM) and vibrating sample magnetometer (VSM) are used for studying the effect of variation in the Cu-Al substitution and its impact on particle size, magnetic properties such as Ms and Hc. Cu-Al substitution occurs and produce a secondary phase, α-Fe2O3. The crystallite size of the powder calcined at 800°C was in the range of 19-26 nm. The lattice parameter decreases with increasing Cu-Al content. The nanostructural features were examined by FESEM images. Infrared absorption (IR) spectra shows two vibrational bands; at around 600 (v1) and 400 cm-1 (v2). They are attributed to the tetrahedral and octahedral group complexes of the spinel lattice, respectively. It was found that the physical and magnetic properties have changed with Cu-Al contents. The saturation magnetization decreases with the increase in Cu-Al substitution. The reduction of coercive force, saturation magnetization and magnetic moments are may be due to dilution of the magnetic interaction.

Item Type:Article
Subjects:Q Science > QC Physics
Divisions:Nanotechnology Research Alliance
ID Code:69117
Deposited By: Siti Nor Hashidah Zakaria
Deposited On:01 Nov 2017 12:59
Last Modified:23 Nov 2017 11:46

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