Ferroelectrics Research Laboratory

Patna, India

Ferroelectrics Research Laboratory

Patna, India
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Rai R.,University of Aveiro | Verma K.,Ferroelectrics Research Laboratory | Sharma S.,Ferroelectrics Research Laboratory | Nair S.S.,University of Aveiro | And 3 more authors.
Journal of Alloys and Compounds | Year: 2011

This report presents the synthesis of copper cadmium ferrite (Cu 1-xCdxFe2O4, x = 0.3, 0.4, 0.5, 0.6 and 0.7) by citrate precursor method and its subsequent characterization by using X-ray diffraction (XRD), electron diffraction spectroscopy (EDS) and vibrating sample magnetometer (VSM) techniques. XRD results confirm the single cubic spinel phase formation with the particle size of 40 nm, which decreased up to 20 nm with increases in Cd content, while the lattice parameter increased with increase in Cd content. By using VSM technique, a significant change in the magnetic properties was observed in CuFe2O4 system with Cd doping. It is seen that magnetic field HC and remnant magnetization MR increases with increasing concentration up to x = 0.6 except for x = 0.4 and 0.7. © 2011 Elsevier B.V. All rights reserved.


Rai R.,University of Aveiro | Verma K.,Ferroelectrics Research Laboratory | Sharma S.,Ferroelectrics Research Laboratory | Nair S.S.,University of Aveiro | And 3 more authors.
Journal of Physics and Chemistry of Solids | Year: 2011

This report presents the synthesis of copper cadmium ferrite (Cu 1-xCdxFe2O4, 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 CuFe2O4 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. © 2011 Elsevier Ltd.

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