| Sr1—xBaxNb2O6基本吸收边的研究 |
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| 引用本文： | 成元发,邝安祥.Sr1—xBaxNb2O6基本吸收边的研究[J].湖北大学学报(自然科学版),1993,15(1):57-59. |
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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： | 通过实验测量Sr_(0.57)Ba_(0.43)Nb_2O_6基本吸收边的位置;由透射曲线计算吸收系数;通过对a~2—hv曲线特征的研究,肯定了3.5eV以下吸收边的间接跃迁性质;确定了声子的能量E_p与禁带宽度E_g的值。
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| 关 键 词： | 吸收边 间接跃迁 铌酸锶钡 晶体 |
INVESTIGATION ON FUNDAMENTAL ABSORPTION EDGE OF Sr1-xBaNb2O6 SINGLE CRYSTAL |
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| Cheng Yuanfa Kuang Anxiang.INVESTIGATION ON FUNDAMENTAL ABSORPTION EDGE OF Sr1-xBaNb2O6 SINGLE CRYSTAL[J].Journal of Hubei University(Natural Science Edition),1993,15(1):57-59. |
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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 station of the fundamental absorption edge of Sr0.57Ba0.43Nb2O6 single crystal have been measured witn experimental studies. The absorption coefficients are calculated with transimitting curve. The absorption edge below 3. 5ev is attributable to indirect transition by studing the a1/2 - hv curve. The phonon energy E, and the energy gap E, are ascertained. |
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| Keywords: | Absorption edge Indirect traaansition Energy gap |
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