期刊
JOURNAL OF APPLIED CRYSTALLOGRAPHY
卷 44, 期 -, 页码 158-162出版社
WILEY-BLACKWELL
DOI: 10.1107/S0021889810052520
关键词
black lithium tantalate; X-ray photoelectron spectroscopy; X-ray diffraction
资金
- National High-Technology Research and Development Program of China (863 Program) [2006AA030106]
- Natural Science Foundation of China [NSFDYS 50925205, 50990303, IRG 50721002]
- Program of Introducing Talents of Discipline to Universities in China (111 program) [b06015]
Lithium tantalate (LiTaO3, LT) wafers of different colors were prepared through chemical reduction of regular congruent LT wafers. Samples with different colors corresponding to different annealing temperatures were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, and measurements of the Curie temperature and density. It was found that chemical reduction does not influence the basic LT structure. The Ta charge state change due to chemical reduction was found to be the main reason for the formation of black LT wafers.
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