| 不同组分的LiNbO3晶体的吸收边研究 |
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| 引用本文： | 刘思敏,张光寅,郭建斌.不同组分的LiNbO3晶体的吸收边研究[J].物理学报,1986,35(10):1357-1363. |
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| 作者姓名： | 刘思敏 张光寅 郭建斌 |
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| 作者单位： | 南开大学物理系 |
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| 摘 要： | 本文通过对不同组分LiNbO3晶体的α1/2-hν曲线的研究,肯定了3.8eV以下的吸收边的间接跃迁性质,并给出了三段直线的合理归属。根据LiNbO3的晶格常数随组分变化的情况,提出了能带结构随组分变化的设想,它解释了我们和Redfield等人有关吸收边的实验结果。
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| 收稿时间： | 1985-12-09 |
INVESTIGATION ON ABSORPTION EDGE OF LiNbO3 CRYSTALS WITH DIFFERENT COMPOSITIONS |
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| Liu Si-min,Zhang Guang-yin and Cuo Jian-bin.INVESTIGATION ON ABSORPTION EDGE OF LiNbO3 CRYSTALS WITH DIFFERENT COMPOSITIONS[J].Acta Physica Sinica,1986,35(10):1357-1363. |
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| Authors: | Liu Si-min Zhang Guang-yin and Cuo Jian-bin |
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| Abstract: | In this paper, it is affirmed that the absorption edge below 3.8 eV is attributable to indirect transition, the rational ownerships of three straight-line parts of spectral line are obtained by studing the a1/2-hν curve of LiNbO3 crystals with different compositions. According to the relation between LiNbO3 lattice constant and compositions, we are sure that the energy band structure change with composition. Redfield's and ours expermental results of absorption edge are explained. |
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