GROWTH OF LARGE SINGLE-CRYSTALS OF BA1-XCAXTIO3, AND THEIR CHARACTERIZATION

Authors
BALAKUMAR S ILANGOVAN R SUBRAMANIAN C RAMASAMY P
Citation
S. Balakumar et al., GROWTH OF LARGE SINGLE-CRYSTALS OF BA1-XCAXTIO3, AND THEIR CHARACTERIZATION, Materials chemistry and physics, 37(1), 1994, pp. 82-85
Citations number
9
Categorie Soggetti
Material Science
Journal title
Materials chemistry and physics → ACNP
ISSN journal
02540584
Volume
37
Issue
1
Year of publication
1994
Pages
82 - 85
Database
ISI
SICI code
0254-0584(1994)37:1<82:GOLSOB>2.0.ZU;2-V
Abstract
Large optical quality Ba1-xCaxTiO3 single crystals have been grown usi ng a flux technique with very slow cooling rates. Growth conditions we re optimized with higher concentrations of Ca (above 16 mol.%). The fo rmation of 'cake' or 'excess' twinned particles at the bottom of the c rucible was completely absent for higher calcium content. A layer grow th mechanism was observed on twinned and rectangular crystals. Lattice parameters decreased with increasing calcium content, and the room te mperature dielectric constant was found to decrease compared to that o f pure BaTiO3.