55 0

Synthesis of Highly Tetragonal BaTiO3 Nanopowders Using Acetone as a Solvent by Alkoxide-Hydroxide Route

Title
Synthesis of Highly Tetragonal BaTiO3 Nanopowders Using Acetone as a Solvent by Alkoxide-Hydroxide Route
Author
성태현
Keywords
BARIUM-TITANATE NANOPARTICLES; HYDROTHERMAL SYNTHESIS; THIN-FILMS; SOL-PRECIPITATION; DEFECT CHEMISTRY; MECHANISMS; PARTICLES; KINETICS; POWDERS; RATIO
Issue Date
2011-06
Publisher
IOP PUBLISHING LTD, TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
Citation
JAPANESE JOURNAL OF APPLIED PHYSICS; MAR 2011, 50 3, 5p.
Abstract
BaTiO3 (BT) nanopowders were synthesized in acetone to remove the TiO2 second phase, which was formed in the specimens synthesized in the 2-methoxyethanol solvent at above 100 degrees C due to H2O evaporation. No TiO2 second phase was formed in the specimens synthesized in acetone, even at 260 degrees C, due to the low boiling temperature of acetone which evaporated at above 55 degrees C and suppressed the H2O evaporation by increasing the vapor pressure in the vessel. However, for the BT nanopowders synthesized at 250 degrees C for 60 h, TiO2 second phase was formed at a Ba/Ti ratio of <= 1.5 and the BT nanopowders were agglomerated at a ratio of >= 3.0. Homogeneous BT nanopowders were obtained at a ratio of 2.0 and they exhibited a high c/a ratio of 1.0082 with a small size of 95.2 nm. Therefore, these nanopowders can be a good candidate for future multilayer ceramic capacitor. (C) 2011 The Japan Society of Applied Physics
URI
http://iopscience.iop.org/article/10.1143/JJAP.50.035002/meta
ISSN
0021-4922; 1347-4065
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRICAL AND BIOMEDICAL ENGINEERING(전기·생체공학부) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE