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Characterization and dramatic variations of the magnetic properties of Cu-doped nanometric Co ferrite
Faculty
Science
Year:
2011
Type of Publication:
Article
Pages:
Authors:
Ahmed, M. A, Mansour, S. F, Abdo, M. A
DOI:
10.1088/0031-8949/84/05/055602
Journal:
PHYSICA SCRIPTA IOP PUBLISHING LTD
Volume:
84
Research Area:
Physics
ISSN
ISI:000296969400017
Keywords :
Characterization , dramatic variations , , magnetic properties , Cu-doped
Abstract:
The structure and magnetic properties of Co(1-X)Cu(X)Fe(2)O(4) were investigated. Cobalt copper ferrites have been synthesized by the double sintering ceramic technique. X-ray diffraction analysis and transmission electron microscopy (TEM) confirmed the formation of single-phase cobalt ferrite nanoparticles. The particle size was estimated by TEM micrography to be 46, 51, 40 and 36 nm for X = 0.0, 0.1, 0.3 and 0.6, respectively, which is a good result for this method of preparation. The magnetic susceptibility was studied at different temperatures as a function of magnetic field intensities. The room temperature hysteresis loop was found for the present samples in a field intensity of 7 kOe using a vibrating sample magnetometer. The parameters of x-ray density (d(x)) and apparent density (d(a)) increase with increasing Cu(2+) concentration in the prepared samples.
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