Tailoring Dielectric Properties of Multilayer Composites Using Spark Plasma Sintering

Catherine Elissalde (1) , Mario Maglione (1) , Claude Estournès (2, 3)

1 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux
2 CIRIMAT - Centre interuniversitaire de recherche et d'ingenierie des matériaux
3 PNF2 - Plateforme Nationale de Frittage Flash

A straightforward and simple way to produce well-densified ferroelectric ceramic composites with a full control of both architecture and properties using spark plasma sintering (SPS) is proposed. SPS main outcome is indeed to obtain high densification at relatively low temperatures and short treatment times thus limiting interdiffusion in multimaterials. Ferroelectric/dielectric (BST64/MgO/BST64) multilayer ceramic densified at 97% was obtained, with unmodified Curie temperature, a stack dielectric constant reaching 600, and dielectric losses dropping down to 0.5%, at room-temperature. This result ascertains SPS as a relevant tool for the design of functional materials with tailored properties.

Mots clés: Matériaux

Domaines: Matériaux

Catherine Elissalde, Mario Maglione, Claude Estournès. Tailoring Dielectric Properties of Multilayer Composites Using Spark Plasma Sintering. Journal of the American Ceramic Society, 2007, 90 (3), pp.973-976. ⟨10.1111/j.1551-2916.2007.01485.x⟩. ⟨hal-03592181⟩