Experimental and numerical investigation of a ceramic dielectric resonator (DRA) : CaCu3Ti4O12 (CCTO)

In this study, the CaCu3Ti4O12 (CCTO) ceramic phase was synthesized by microwave heating in a much shorter time compared to the conventional heating methods. The results indicate that microwave processing is a promising method for preparing CCTO ceramics. CCTO was prepared using a domestic microwave...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2008-03, Vol.403 (4), p.586-594
Main Authors: ALMEIDA, A. F. L, SILVA, R. R, ROCHA, H. H. B, FECHINE, P. B. A, CAVALCANTI, F. S. A, VALENTE, M. A, FREIRE, F. N. A, SOHN, R. S. T. M, SOMBRA, A. S. B
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Dielectric loss and relaxation
Dielectric properties of solids and liquids
Dielectrics, piezoelectrics, and ferroelectrics and their properties
Exact sciences and technology
Physics
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Summary:In this study, the CaCu3Ti4O12 (CCTO) ceramic phase was synthesized by microwave heating in a much shorter time compared to the conventional heating methods. The results indicate that microwave processing is a promising method for preparing CCTO ceramics. CCTO was prepared using a domestic microwave oven operated at 2.45GHz with 800W. After a few minutes of microwave irradiation the formation of CCTO was confirmed by X-ray powder diffraction. The CCTO ceramic was studied in the medium-frequency (MF) range (100Hz-1MHz) and in the microwave range of frequencies. The experimental and theoretical characteristics of the dielectric resonator antenna are investigated.
ISSN:0921-4526
1873-2135
DOI:10.1016/j.physb.2007.08.222