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Growth and evaluation of lanthanoids orthoniobates single crystals processed by a miniature pedestal growth technique
Author(s) -
Octaviano E. S.,
Reyes Ardila D.,
Andrade L. H. C.,
Siu Li M.,
Andreeta J. P.
Publication year - 2004
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.200410266
Subject(s) - lanthanide , pedestal , crystallinity , erbium , crystal growth , ion , doping , materials science , single crystal , crystal (programming language) , chemistry , analytical chemistry (journal) , crystallography , optoelectronics , mechanical engineering , organic chemistry , chromatography , programming language , computer science , engineering
Optimized conditions for the growth of lanthanoids orthoniobates (LnNbO 4 , Ln = lanthanide elements) single crystal minirods by a floating zone technique were investigated. Adequate atmospheres and pulling to feeding speed ratios to grow these materials were determined. Emphasis is given to the study of LaNbO 4 because of their more favorable growth conditions and crystalline quality. This material can be efficiently doped with rare earth elements such as erbium. It grows with high crystallinity and its preferential growth direction is [1 1 0]. A preliminary evaluation of optical properties of Er 3+ ‐doped LaNbO 4 single crystal under the Judd‐Ofelt formalism indicates spectral parameters Ω t close and even larger than for Er 3+ ions in YVO 4 . (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)