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Tetragonal Nanocrystalline Barium Titanate Powder: Preparation, Characterization, and Dielectric Properties
Author(s) -
Xu Huarui,
Gao Lian
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.tb03307.x
Subject(s) - nanocrystalline material , tetragonal crystal system , barium titanate , materials science , dielectric , differential scanning calorimetry , particle size , characterization (materials science) , hydrothermal circulation , mineralogy , analytical chemistry (journal) , chemical engineering , crystallography , crystal structure , nanotechnology , chemistry , chromatography , physics , optoelectronics , engineering , thermodynamics
Nanocrystalline tetragonal‐BaTiO 3 powder was prepared using a hydrothermal method, under moderate conditions, and with a high precursor concentration. Characterization via X‐ray diffractometry and differential scanning calorimetry confirmed that the average particle size and tetragonal content of the prepared powder were 70 nm and 80%, respectively. The sintered sample made from the prepared powder had a room‐temperature dielectric constant of 6900, which was high for BaTiO 3 .