{111}-textured BaTiO 3 ceramics elaborated by Templated Grain Growth using NaNbO 3 templates

A Ngueteu-Kamlo (1) , Pierre-Marie Geffroy (2) , M Pham-Thi (3) , Pascal Marchet (1)

1 SPCTS-AXE3 - Axe 3 : organisation structurale multiéchelle des matériaux
2 Axe 1 : procédés céramiques
3 Thales Research and Technology [Palaiseau]

Highly textured {111} BaTiO 3 ceramics were obtained by templated grain growth using NaNbO 3 templates, with Lotgering factor F 111 , around 95 %, one of the best values reported in the literature. Solid solution formation with NaNbO 3 templates changes the tetragonal structure into cubic, with paraelectric behaviour. The relative permittivity is lower than "pure" tetragonal BaTiO 3 , but dielectric losses are improved with better thermal stability.

Mots clés: Electroceramics; Texture; Templated Grain Growth; Tape casting

Domaines: Chimie; Matériaux

A Ngueteu-Kamlo, Pierre-Marie Geffroy, M Pham-Thi, Pascal Marchet. {111}-textured BaTiO 3 ceramics elaborated by Templated Grain Growth using NaNbO 3 templates. Materials Letters, 2013, 113, pp.149-151. ⟨10.1016/j.matlet.2013.09.071⟩. ⟨hal-01097352⟩