Title :
Flux growth of bulk photorefractive barium titanate crystals
Author :
Aggarwal, M.D. ; Wang, W.S. ; Choi, J.
Author_Institution :
Dept. of Phys., Alabama A&M Univ., Normal, AL, USA
Abstract :
Single crystals of pure and Cr3+ doped barium titanate (BaTiO3) have been grown by top seeded solution growth technique (TSSG). TSSG system consists of a resistance heated super kanthal cylindrical furnace capable of temperatures up to 1540°C along with crystal rotation and pulling arrangement. According to the phase diagram, 65 mol% TiO2 is mixed with 35 mol% BaO to have a molten flux at 1460°C. We typically have grown 20-39 g boules from 300 g of melt in a 100 ml platinum crucible. Polished and poled cubes as large as 15×15×10 mm3 have been successfully fabricated
Keywords :
barium compounds; chromium; crystal growth from solution; dielectric polarisation; ferroelectric materials; photorefractive materials; 1460 C; 1540 C; BaTiO3; BaTiO3:Cr; crystal rotation and pulling arrangement; flux growth; phase diagram; poled cubes; resistance heated super kanthal cylindrical furnace; single crystals; top seeded solution growth technique; Barium; Crystals; Furnaces; Insulation; Optical signal processing; Photorefractive materials; Platinum; Resistance heating; Temperature; Titanium compounds;
Conference_Titel :
Applications of Ferroelectrics, 1994.ISAF '94., Proceedings of the Ninth IEEE International Symposium on
Conference_Location :
University Park, PA
Print_ISBN :
0-7803-1847-1
DOI :
10.1109/ISAF.1994.522487
