Study of the electrical properties of calcium-substituted Li-Zn ferrite

Sattar, A.A. ; El-Sayed, H.M. ; Agami, W.R. 


Abstract


Temperature and composition dependence of the dc resistivity (ρ dc ) and thermoelectric power (α) of Li 0.3-0.5x Zn 0.4 Ca x Fe 2.3-0.5x O 4 ferrites (x = 0.0, 0.01, 0.02, 0.03 and 0.05), prepared by the standard ceramic method, have been studied. The behavior of both ρ dc and α with temperature support the electron hopping conduction mechanism in the ferrimagnetic phase while the band mechanism dominates in the paramagnetic phase. Moreover, it was found that both ρ dc and a decrease with increasing x up to x = 0.02 and then increase. The frequency and composition dependence of ε′, ε″ and ρ ac are found to support Koops's model. © 2008 WILEY-VCH Verlag GmbH & Co. KGaA.


Other data

Issue Date 2008
Journal Physica Status Solidi (A) Applications and Materials Science 
URI http://research.asu.edu.eg/123456789/688
DOI 11
2716
http://www.scopus.com/inward/record.url?eid=2-s2.0-55849121943&partnerID=MN8TOARS
205
10.1002/pssa.200824042


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