Paper Title:
Microstructural Characterization of BaTiO3 Ceramic Nanoparticles Synthesized by the Hydrothermal Technique
  Abstract

BaTiO3 (BT) nanoparticles were prepared by the hydrothermal technique using different starting materials and the microstructure examined by XRD, SEM, TEM and HRTEM. X-ray diffraction and electron diffraction patterns showed that the nanoparticles were the cubic BaTiO3 phase. The BT nanoparticles prepared from the starting materials of as-prepared titanium hydroxide and barium hydroxide have spherical grain morphology, an average size of 65 nm and a fairly narrow size distribution. A uniform diffraction contrast across each single grain is observed in the TEM images, and the clear lattice fringes (with d110 = 0.28 nm) observed in HRTEM images reveal that well-crystallized BT nanoparticles are synthesized by the hydrothermal method. The edges of the particles are very smooth, with no surface steps. BT nanoparticles with average grain size of 90 nm, synthesized using barium hydroxide and titanium dioxide as the starting materials, show surface facets. In this case a bimodal size distribution of large faceted and smaller particles is observed. Diffraction contrast variation across the particles caused by high strains within the particles is clearly observed. The high strains obviously stem from structural defects formed during hydrothermal synthesis, presumable in the form of lattice OH− ions and their compensation by cation vacancies. HRTEM images demonstrate that surface facets parallel to the (100) and (110) planes and small islands with 3 ~ 4 atomic layer thickness are frequently observed around the edge of the particles.

  Info
Periodical
Solid State Phenomena (Volume 106)
Edited by
Radu Robert Piticescu, Witold Lojkowski and John R. Blizzard
Pages
41-46
DOI
10.4028/www.scientific.net/SSP.106.41
Citation
X. H. Zhu, J. M. Zhu, S. H. Zhou, Z. G. Liu, N. B. Ming, D. Hesse, "Microstructural Characterization of BaTiO3 Ceramic Nanoparticles Synthesized by the Hydrothermal Technique", Solid State Phenomena, Vol. 106, pp. 41-46, 2005
Online since
September 2005
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Chun Lin Fu, Meng Huo, Wei Cai, Xiao Ling Deng
Abstract:BiFeO3 powders were prepared by sol-gel process and calcined at different temperatures. The DTA curve shows an obvious exothermic...
142
Authors: Xiao Ju Yao, Zhi Qiang Wei, Hua Yang, Li Gang Liu
Chapter 5: Optical/Electronic/Magnetic Materials
Abstract:In the protecting inert gas, Fe nanoparticles were successfully prepared by confined arc plasma method. The particle size, microstructure and...
1206
Authors: Chin Wei Lai, Emy Marlina Samsudin, Joon Ching Juan
Abstract:Titania (TiO2) nanotubes were successfully synthesized via a facile hydrothermal method. The influence of starting material...
186
Authors: Li Xiong Yin, Fei Fei Wang, Jian Feng Huang, Dan Wang, Jia Yin Li
Chapter 1: Nanoscale Materials and Nanocomposites
Abstract:SnO2 nanocrystals were synthesized using SnCl4•5H2O and NH3•H2O as the main raw...
122