화학공학소재연구정보센터
Journal of Crystal Growth, Vol.266, No.4, 481-486, 2004
Effect of rhodium doping on the growth and characteristics of BaTiO3 single crystals grown by step-cooling method
Single crystals of Rh-doped BaTiO3 have been grown by high-temperature solution growth technique. The dopant has significant effect on the growth parameters and crystal properties. Bulk single crystals of dimensions 5 x 5 x 4 mm(3) have been grown with optimized growth conditions. Layer growth and vein-like structure patterns, indicative of 2D-nucleation mechanism, have been observed on the grown crystals. The dopant level in the grown crystals was estimated by EDX analysis. The crystals possess tetragonal structure and the tetragonality decreases for higher dopant concentration. Rh doping in BaTiO3 leads to decrease in dielectric constant and Curie temperature (T-c) values. (C) 2004 Elsevier B.V. All rights reserved.