Low-losses, highly tunable Ba{sub 0.6}Sr{sub 0.4}TiO{sub 3}/MgO composite
- ICMCB-CNRS, Universite Bordeaux I, 87 Avenue du Dr A. Schweitzer, F-33608 Pessac Cedex 33608 (France)
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 Ba{sub 0.6}Sr{sub 0.4}TiO{sub 3} (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.
- OSTI ID:
- 21016303
- Journal Information:
- Applied Physics Letters, Vol. 92, Issue 4; Other Information: DOI: 10.1063/1.2837621; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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