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Growth and optical characterization of cerium and lead‐doped Bi 12 TiO 20 sillenite single crystals
Author(s) -
Carvalho J. F.,
Hernandes A. C.
Publication year - 2005
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.200410444
Subject(s) - photocurrent , cerium , doping , materials science , analytical chemistry (journal) , characterization (materials science) , absorption (acoustics) , chemistry , optoelectronics , nanotechnology , chromatography , metallurgy , composite material
Bi 12 TiO 20 (BTO) single crystals doped with PbO and CeO 2 were grown by the Top Seeded Solution Growth (TSSG) technique from the liquid phase with nominal compositions of 10Bi 2 O 3 : (1–x)TiO 2 : x PbO and 10Bi 2 O 3 : (1–x)TiO 2 : xCeO 2 with x = 0.25 and 0.10. No growth‐related difficulties were encountered other than those typical of sillenite crystals. Samples with good optical quality were obtained and were characterized by optical absorption, dark current, spectral photocurrent dependence, optical activity and electro‐optic coefficient measurements. A comparison is made of the results of the optical measurements of doped and undoped BTO crystals. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)