CHUNG, U-Chan; ELISSALDE, Catherine; MAGLIONE, Mario; ESTOURNÈS, Claude; PATÉ, M.; GANNE, Jean-Pierre

doi:10.1063/1.2837621

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CHUNG, U-Chan
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

ELISSALDE, Catherine
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

MAGLIONE, Mario
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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Applied Physics Letters. 2008-01-29, vol. 92, n° 4, p. 042902 (3 p.)

American Institute of Physics

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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.< Leer menos

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Composite

Dielectric loss and relaxation

Ferroelectricity

Ceramic

Spark plasma sintering

SPS

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

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