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Low-losses, highly tunable Ba0. 6Sr0. 4TiO3/MgO composite

Chan Chung, U. and Elissalde, Catherine and Maglione, Mario and Estournès, Claude and Paté, Michel and Ganne, Jean-Pierre Low-losses, highly tunable Ba0. 6Sr0. 4TiO3/MgO composite. (2008) Applied Physics Letters, 92 (4). ISSN 0003-6951

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Official URL: http://dx.doi.org/10.1063/1.2837621


Spark plasma sintering SPS is an efficient tool to obtain highly densified ferroelectric-dielectric ceramic composites with clean interfaces and tunable properties. Dielectric MgO and ferroelectric Ba0.6Sr0.4TiO3 BST were combined in two-dimensional multilayer and three-dimensional random powders design. Their unmodified BST Curie temperature proves the suppression of interdiffusion while dielectric losses are below 0.5% and the tunability is 40% at room temperature. The composites and pure BST with similar densities 95% were obtained, owing reliable comparison of their dielectric properties. Such SPS ceramics can be used as experimental input for simulation and are potential candidates for high frequency applications.

Item Type:Article
Additional Information:Thanks to American Institute of Physics editor. The definitive version is available at http://scitation.aip.org/ The original PDF of the article can be found at Applied Physics Letters website : http://apl.aip.org/apl/top.jsp
HAL Id:hal-00258625
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Other partners > Thales (FRANCE)
Other partners > Ecole Nationale Supérieure de Chimie et de Physique de Bordeaux - ENSCPB (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Université de Bordeaux 1 (FRANCE)
Laboratory name:
Deposited On:21 Apr 2009 11:59

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