Please use this identifier to cite or link to this item:
Title: Magneto-dielectric properties of Mg-Cu-Co ferrite ceramics: I. Densification behavior and microstructure development
Authors: Kong, L.B. 
Li, Z.W. 
Lin, G.Q. 
Gan, Y.B. 
Issue Date: Oct-2007
Citation: Kong, L.B., Li, Z.W., Lin, G.Q., Gan, Y.B. (2007-10). Magneto-dielectric properties of Mg-Cu-Co ferrite ceramics: I. Densification behavior and microstructure development. Journal of the American Ceramic Society 90 (10) : 3106-3112. ScholarBank@NUS Repository.
Abstract: The densification, grain growth, and microstructure development of Mg-Cu-Co ferrite ceramics (MgFe1.98O4, Mg1-xCu xFe1.98O4, with x=0.10-0.30 and Mg 0.90-xCoxCu0.10Fe1.98O4, with x=0.05-0.20) were studied. The primary objective was to develop magneto-dielectric materials for miniaturization of high frequency and very-high frequency antennas. It was found that magnesium ferrite (MgFe 1.98O4) is a promising magneto-dielectric material. However, due to its poor densification, it could not be fully sintered at a temperature below 1200°C. High-temperature sintering resulted in undesirable electrical and dielectric properties, due to the formation of Fe2+ ions. The poor densification and slow grain growth rate of MgFe 1.98O4 can be considerably improved by incorporating Cu, due to the occurrence of liquid-phase sintering at a high temperature. A critical concentration of Cu was observed for Mg1-xCu xFe1.98O4, above which both densification and grain growth were maximized or saturated. The presence of Co did not have a significant influence on the densification and grain growth of the Mg-based ferrite ceramics. © 2007 The American Ceramic Society.
Source Title: Journal of the American Ceramic Society
ISSN: 00027820
DOI: 10.1111/j.1551-2916.2007.01869.x
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.