| LiNbO3晶体光学吸收边的异常紫移 |
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| 引用本文： | 成元发,邝安祥.LiNbO3晶体光学吸收边的异常紫移[J].湖北大学学报(自然科学版),1991,13(2):131-134. |
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| 作者姓名： | 成元发 邝安祥 |
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| 作者单位： | 湖北大学物理系
(成元发)，湖北大学物理系(邝安祥) |
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| 摘 要： | 本文报道了室温下,固液同成分点熔体中生长的LiNbO_3光学吸收边的异常紫移的实验结果.通过对晶体a~(1/2)-hv曲线的研究,肯定了40.eV以下吸收边的间接跃迁性质,并讨论了三段直线的意义。确定了禁带宽度E_f的值为3.38eV。
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| 关 键 词： | 铁电晶体 光学 吸收边 铌酸锂 跃迁 |
THE ANOMALOUS VIOLET-SHIFT OF ABSORPTION EDGE OF LiNbO3 CRYSTAL |
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| Cheng Yuanfa Kuang Anxiang.THE ANOMALOUS VIOLET-SHIFT OF ABSORPTION EDGE OF LiNbO3 CRYSTAL[J].Journal of Hubei University(Natural Science Edition),1991,13(2):131-134. |
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| Authors: | Cheng Yuanfa Kuang Anxiang |
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| Institution: | Department of Physics |
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| Abstract: | In this paper, the Experimental result of anomalous violet-shift of absorption edge of congruently melt grown LiNbO3 at room temperature is presented . It is affirmed that the absorption edge below 4. 0 eV is attributable to indirect transition,the significant discussion of three straight-line parts of spectral line are obtained by studing the curve of LiNbO3. The energy gap E, is 3. 38eV. |
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| Keywords: | Absorption edge Indirect transition |
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