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

fYear

1991

fDate

33457

Firstpage

775

Lastpage

777

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ISAF.1994.522487

Filename

522487