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Preparation of 0.95Bi 1/2 Na 1/2 TiO 3 ·0.05BaTiO 3 Ceramics by an Aqueous Citrate‐Gel Route
Author(s) -
West David L.,
Payne David A.
Publication year - 2003
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.2003.tb03303.x
Subject(s) - materials science , aqueous solution , perovskite (structure) , ceramic , grain size , dielectric , analytical chemistry (journal) , sol gel , sintering , mineralogy , grain boundary , microstructure , nuclear chemistry , inorganic chemistry , crystallography , metallurgy , nanotechnology , chemistry , chromatography , optoelectronics
This report details development of a route to solution‐derived (1− x )Bi 1/2 Na 1/2 TiO 3 · x BaTiO 3 powders. The method developed was the citrate‐gel method—an evaporative, aqueous technique. When applied to 0.95Bi 1/2 Na 1/2 TiO 3 ·0.05BaTiO 3 (BNBT‐5), the method produced perovskite phase powders that readily densified in the temperature range of 1000°C. The grain size of the sintered materials was on the order of 1 μm, and the weak‐field dielectric properties at 1 MHz were similar to those reported for conventionally prepared materials sintered at higher temperatures (e.g., 1200°C).