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Optical properties of ZnNb 2 O 6 single crystals prepared via the optical floating zone technology
Author(s) -
Xu Dapeng,
Yang Hang,
Li Liang,
Zhou Qiang,
Yuan Hongming,
Cui Tian
Publication year - 2014
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.201400094
Subject(s) - orthorhombic crystal system , materials science , photoluminescence , luminescence , raman spectroscopy , single crystal , analytical chemistry (journal) , annealing (glass) , crystallography , rod , optics , crystal structure , chemistry , optoelectronics , physics , chromatography , composite material , medicine , alternative medicine , pathology
By using an optical floating zone technology, orthorhombic columbit ZnNb 2 O 6 single crystals are fabricated successfully. The as‐prepared sample are blue and transparent rods of Φ 4 to 6 mm × L 48 mm and the biggest domain of Φ 4 mm× L 25 mm. After annealing, the sample fades to colorless. X‐ray diffractions indicates that the as‐perpared samples are ZnNb 2 O 6 with orthorhombic columbite structure and grows along the a ‐axis. The micropolariscopy in cross transmission arrangements analyzing give that the crystals are of low‐angle crystal boundary‐free and bubble‐free. Besides, the crystals have also been tested by Raman spectra, optical absorption and photoluminescence spectra before and after being annealed. The luminescence pattern has an emission peak located at 450 nm blue‐region.