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- Title
Nanostructured tetragonal barium titanate produced by the polyol and spark plasma sintering (SPS) route.
- Authors
Acevedo-Salas, Ulises; Breitwieser, Romain; Gaudisson, Thomas; Nowak, Sophie; Ammar, Souad; Valenzuela, Raúl
- Abstract
There is a great interest to synthesize ferroelectric ceramics both with fine grain size and significant electric properties. Here, we report the preparation of nanostructured tetragonal barium titanate by combining forced hydrolysis of metallic salts in polyol, soft annealing and 650 °C spark plasma sintering under uniaxial pressure of 120 MPa for 5 min. The stabilization of highly dense (density of 90%), nanostructured (grains about 50 nm) tetragonal barium titanate ceramic was achieved. The produced ceramic exhibited ferroelectric behavior and a dielectric permittivity of 3600 at 1 kHz and room temperature.
- Subjects
BARIUM titanate; FERROELECTRIC ceramics; CHEMICAL synthesis; ELECTRIC properties; NANOSTRUCTURED materials; HYDROLYSIS; POLYOLS; SINTERING
- Publication
Applied Physics A: Materials Science & Processing, 2017, Vol 123, Issue 10, p1
- ISSN
0947-8396
- Publication type
Article
- DOI
10.1007/s00339-017-1267-9