%0 Journal Article %J Journal of Alloys and Compounds %D 2009 %T On the structural, magnetic and electrical properties of sol-gel derived nanosized cobalt ferrite %A Gopalan, E. Veena %A Joy, Pattayil Alias %A Al-Omari, I. A. %A Kumar, D. Sakthi %A Yoshida, Yasuhiko %A Anantharaman, Maliemadom R. %K Electronic Transport %K Magnetic measurements %K Magnetically ordered materials %K Nanostructures %K Scanning and transmission electron microscopy %K Sol-gel synthesis %K X-ray diffraction %X

Nanoparticles of cobalt ferrite were synthesized by sol gel method. These particles were structurally characterized by using X-Ray Diffraction and Transmission Electron Microscopy, High Resolution Transmission Electron Microscopy, Energy Dispersive Spectrum and Inductively Coupled Plasma Analysis and the results confirmed the formation of spherically shaped nanoparticles of cobalt ferrite having a size lying in the range of 13-14 nm. The as prepared sample was sintered at 800 degrees C and the structural, magnetic and dielectric properties were measured. The dielectric properties were studied and analyzed as a function of temperature and frequency. The ac and dc conductivity studies were carried out to delve into the conduction mechanism. The existing models based on quantum mechanical tunneling were effectively employed to explain the frequency dependent conductivity. (C) 2009 Elsevier B.V. All rights reserved.

%B Journal of Alloys and Compounds %I ELSEVIER SCIENCE SA %C PO BOX 564, 1001 LAUSANNE, SWITZERLAND %V 485 %P 711-717 %8 OCT %G eng %N 1-2 %3 Foreign %4 2.134 %R 10.1016/j.jallcom.2009.06.033