Effect of zinc substitution on structural and magnetic properties of cobalt ferrite
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Publication Details
Author list: Hassadee A., Jutarosaga T., Onreabroy W.
Publisher: Elsevier
Publication year: 2012
Volume number: 32
Start page: 597
End page: 602
Number of pages: 6
ISSN: 1877-7058
Languages: English-Great Britain (EN-GB)
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Abstract
Zinc-substituted cobalt ferrites, Co1-xZnxFe 2O4 (x = 0.0 - 0.5), were prepared by ceramic processing. The crystal structural, morphological and magnetic properties of the products were determined by X-ray diffractometry (XRD), scanning electron microscopy (SEM), and vibrating sample magnetometer (VSM) respectively. The results revealed that the spinel structure was also modified by the substitute ions. In Co1-xZnxFe2O4 samples, Zn 2+ commonly substitute for Co2+, resulting in an increase in the lattice parameter from 8.381 - 8.412 ล. Magnetization measurements indicated that Co1-xZnxFe2O4 samples with x = 0.0 - 0.5 showed ferrimagnetic behavior at room temperature. The decrease in the maximum magnetization of the Co1-xZn xFe2O4 samples from 134 to 100 emu/g and the decrease in the coercivity of the Co1-xZnxFe 2O4 samples from 140 to 4 Oe by increasing the zinc content from 0.0 to 0.5 can be attributed to the magnetic characteristic and the anisotropic nature of cobalt. ฉ 2010 Published by Elsevier Ltd.
Keywords
Cobalt ferrites, Magnetic properties
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