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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
materials science
Could Mg content control the conduction mechanism of Ba Co Zn-W-type hexagonal ferrites?
Journal of Magnetism and Magnetic Materials, Volume 321, No. 24, Year 2009
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Description
Electrical properties as a function of composition, frequency and temperature for a series of W-type hexagonal ferrites with the general formula BaCoZn1-xMgxFe16O 27; 0≤x≤0.6 prepared using the conventional ceramic method were studied. These samples are semiconductor-like materials, where the ac conductivity increases with increasing temperature. The results show that the conduction mechanism depends on the Mg2+ substitution. The transition temperature (Tσ) increases with increasing Mg content and gives a hump at x=0.5; after that Tσ decreases again. Both the ac conductivity and dielectric constant vary with Mg content and reach the highest value at x=0.5, due to the highest value of the ratio of Fe2+/Fe3+ at x=0.5. The peak value of the dielectric constant depends on the Mg content x. Crown Copyright © 2009.
Authors & Co-Authors
Ahmed, M. A.
Egypt, Giza
Faculty of Science
Okasha, N.
Egypt, Cairo
College of Science
Kershi, R. M.
Yemen, Ibb
Ibb University
Statistics
Citations: 22
Authors: 3
Affiliations: 3
Identifiers
Doi:
10.1016/j.jmmm.2009.07.002
ISSN:
03048853