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Solvothermal Synthesis and Characterization of Barium Titanate Powders
Author(s) -
Chen Dairong,
Jiao Xiuling
Publication year - 2000
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.1151-2916.2000.tb01606.x
Subject(s) - materials science , barium titanate , tetragonal crystal system , chemical engineering , hydrothermal circulation , solvothermal synthesis , transmission electron microscopy , methanol , hydrothermal synthesis , particle size , phase (matter) , mineralogy , nanotechnology , ceramic , chemistry , organic chemistry , composite material , engineering
Cubic BaTiO 3 powders have been synthesized from gel powders after thermal treatment in an alcohol solution and characterized using X‐ray diffractometry, transmission electron microscopy, and other techniques in detail. The borderline reaction conditions, such as the reaction temperature and time, for the synthesis of crystalline BaTiO 3 powder in different solvents are established. The single‐phase BaTiO 3 powder has low agglomeration and seems to have a regular morphology. The formation of BaTiO 3 powders via solvothermal reaction is more difficult, in comparison to hydrothermal processing. The crystalline powders, which have a small particle size (∼20–60 nm) and narrow particle‐size distribution, can be synthesized in methanol, ethanol, or n ‐propanol systems. Unlike the hydrothermal reaction, tetragonal‐phase BaTiO 3 powders cannot be prepared via the solvothermal reaction, even with alkali catalysts.