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Optical absorption spectra of LiNbO 3 , Fe:LiNbO 3 , and Zn:Fe:LiNbO 3 single crystals grown by Bridgman method
Author(s) -
Xia Haiping,
Zeng Xianlin,
Wang Jinhao,
Zhang Jianli,
Xu Jian,
Zhang Yuepin,
Nie Qiuhua
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.200310192
Subject(s) - analytical chemistry (journal) , absorption (acoustics) , lithium niobate , absorption spectroscopy , ion , crystal (programming language) , doping , single crystal , inductively coupled plasma , chemistry , crystal growth , spectral line , materials science , crystallography , plasma , optics , physics , optoelectronics , organic chemistry , chromatography , quantum mechanics , astronomy , computer science , composite material , programming language
Abstract The optical absorption spectra of LiNbO 3 (LN), Fe:LiNbO 3 (Fe:LN), and Zn:Fe:LiNbO 3 (Zn:Fe:LN) single crystals grown by Bridgman method were measured and compared. The absorption characteristics of the samples and the effects of growth process conditions on the absorption spectra were investigated. The Fe, Zn and Li concentrations in the crystals were analyzed by inductively coupled plasma (ICP) spectrometry. The results indicated that the overall Fe ion and Fe 2+ concentration in Fe:LN and Zn:Fe:LN crystals increased along the growing direction. The incorporation of ZnO in Fe:LN crystal induced increase of Fe 2+ in the crystal. Among Fe‐doped and Zn:Fe‐codoped LN single crystals, 3 mol% ZnO doped Fe:LN had a biggest change of Fe 2+ ion concentration from bottom to top part of crystal. The effects of technical conditions (atmosphere and thermal history) on Fe 2+ ion concentration were discussed. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)