Proceedings of the Korea Association of Crystal Growth Conference (한국결정성장학회:학술대회논문집)
- 1999.06a
- /
- Pages.167-185
- /
- 1999
TSSG growth, morphology and properties of potassium lithium niobate (KLN) crystals
- Chong, Tow-Chong (Data Storage Institute, 10 Kent Ridge Crescent) ;
- Xu, Xue-Wu (Data Storage Institute, 10 Kent Ridge Crescent) ;
- Lian Li (Data Storage Institute, 10 Kent Ridge Crescent) ;
- Zhang, Guang-Yu (Data Storage Institute, 10 Kent Ridge Crescent) ;
- H. Kumagai (Research Center, Asahi Glass Co. Ltd.) ;
- M. Hirano (Research Center, Asahi Glass Co. Ltd.)
- Published : 1999.06.01
Abstract
In the present paper, KLN crystals have been grown along <001>, <100> and <110> directions by the top seeded solution growth (TSSG) method from Li-richer melts with different compositions. The morphologies of KLN crystals grown along different directions have been studied, and the well-developed facets have been unambiguously indexed using X-ray goniometer and stereographic projection analysis. The growth mechanism and defects such as cracks and inclusions were discussed on the basis of observations of facets on the crystal-melt interfaces. The crystal compositions were determined by chemical analysis method. The structure and lattice constants of KLN crystals were determined and calculated on the basis of XRD data by using TREOR90 and PIRUM programs. The Curie temperature and optical absorption were determined by dielectric constant peak and spectrum measurements, respectively. The blue SHG characteristics of a KLN sample were also investigated using a pulsed dye laser. PACS: 42.70.M;81.10;81.10A;42.65.K.