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Erschienen in:
01.04.2013
Microwave dielectric properties of Li2MgTi3O8 ceramics produced by reaction-sintering method
Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 4/2013
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Abstract
Li2MgTi3O8 ceramics were prepared by reaction-sintering method (free calcination) for the first time and its microwave dielectric properties were investigated. A single phase of Li2MgTi3O8 ceramic was confirmed by XRD pattern. The variation of microstructures was analyzed by SEM. With increasing sintering temperature, the bulk density decreased, the εr and Q × f increased firstly and then decreased, while the τf changed slightly and remained around 1.5 ppm/ °C. In particular, Li2MgTi3O8 ceramics sintered by reaction-sintering method at 1100 °C for 5 h exhibited fine combination microwave dielectric properties of εr = 23.0, Q × f = 54 052 GHz (at 7.29 GHz) and τf = 1.5 ppm/ °C.