Hydrothermal synthesis of tetragonal barium titanate from barium hydroxideand titanium dioxide under moderate conditions

Citation
Mm. Wu et al., Hydrothermal synthesis of tetragonal barium titanate from barium hydroxideand titanium dioxide under moderate conditions, J AM CERAM, 82(11), 1999, pp. 3254-3256
Citations number
12
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
ISSN journal
00027820 → ACNP
Volume
82
Issue
11
Year of publication
1999
Pages
3254 - 3256
Database
ISI
SICI code
0002-7820(199911)82:11<3254:HSOTBT>2.0.ZU;2-S
Abstract
Tetragonal BaTiO3 powders were prepared hydrothermally, using Ba(OH)(2). 8H (2)O and TiO2 (anatase), in the absence of anions such as chloride ions, at a temperature of 220 degrees C for several days. Characterization via X-ra y diffractometry, scanning electron microscopy, and differential scanning c alorimetry confirmed that increasing the Ba:Ti molar ratios (from 1:1 to 4: 1) and alkaline concentrations (from 1.0M to 3.0M) promotes the formation o f tetragonal BaTiO3.