Study of structural and ferromagnetic properties of pure and Cd doped copper ferrite

resumo

This report presents the synthesis of copper cadmium ferrite (Cu(1-x)Cd(x)Fe(2)O(4), x=0.3, 0.4, 0.5, 0.6 and 0.7) by the citrate precursor method and its subsequent characterization by X-ray diffraction (XRD), differential scanning calorimetry, infrared spectroscopy and ferromagnetic resonance. XRD results confirm the single cubic spinel phase formation with the particle size of 40 nm, which decreased up to 20 nm with increase in Cd content, while the lattice parameter increased with increase in Cd content. A significant change in the magnetic properties was observed in the CuFe(2)O(4) system with Cd doping. The line width and resonance field variation against change in temperature is noted and the data is fitted to the linearlized model (LM) and Smit and Beljers (SB) model to find out the parameters. The results recorded from the SB approach are in good agreement with those observed in the magnetic measurements carried out by vibrating sample magnetometer (VSM) techniques. (C) 2011 Elsevier Ltd. All rights reserved.

palavras-chave

TEMPERATURE-DEPENDENCE; MAGNETIC-PROPERTIES; NANOPARTICLES; RESONANCE; CRYSTAL; SPECTRA; SYSTEM; FE3O4; CO; CU

categoria

Chemistry; Physics

autores

Rai, R; Verma, K; Sharma, S; Nair, SS; Valente, MA; Kholkin, AL; Sobolev, NA

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