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- Title
Structural change of hydrothermal BaTiO<sub>3</sub> powder.
- Authors
Lee, J. H.; Nersisyan, H. H.; Lee, H. H.; Won, C. W.
- Abstract
Formation rate of tetragonal BaTiO3 powder by hydrothermal synthesis and its dielectric property were studied. Submicron tetragonal BaTiO3 powders were prepared hydrothermally, using Ba(OH)2 · 8H2O, TiO2 (anatase) and KOH as starting chemicals. Characterization via X-ray diffractometry, Field Emission Scanning Electron Microscopy confirmed that increasing calcination temperature (from 1100 to 1300°C) promotes the formation of tetragonal BaTiO3. Tetragonal BaTiO3 ceramics obtained from optimum condition (Tetragonal BaTiO3 powders calcined at 1200°C for 3 h after hydrothermal synthesized at 200°C for 168 h) exhibited submicron size of 0.5–0.7 μm, monodispersed type and high relative permittivity.
- Subjects
HYDROTHERMAL electric power systems; ELECTRON microscopy; TITANIUM dioxide; ELECTRON emission; PARTICLES (Nuclear physics); INDUSTRIAL chemistry
- Publication
Journal of Materials Science, 2004, Vol 39, Issue 4, p1397
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1023/B:JMSC.0000013903.88605.a4