| TixY1-xBa2Cu3O7-δ超导体的红外、远红外光谱 |
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| 引用本文： | 叶红娟,俞志毅,陆卫,季华美,陈建湘,李光远,蔡培新,顾为芳.TixY1-xBa2Cu3O7-δ超导体的红外、远红外光谱[J].物理学报,1989,38(4):586-592. |
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| 作者姓名： | 叶红娟 俞志毅 陆卫 季华美 陈建湘 李光远 蔡培新 顾为芳 |
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| 作者单位： | (1)华东化工学院物理系; (2)中国科学院上海技术物理研究所; (3)中国科学院上海冶金研究所 |
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| 摘 要： | 本文报道了TixY1-xBa2Cu3O7-δ(x=0.2和0.4)在4.2—300K的红外、远红外光谱。在50—360cm-1波段内发现七个反射峰。它们分别与Ba,Cu,O离子团,Y,O离子团。Ti,O离子团,以及Cu—O键的振动有关,对于x=0.2的样品,存在两个反转结构。对于x=0.4的样品,则仅发现一个反转结构。在红外光谱中观察到六个反对峰和三个吸收峰,它们的强度大多随Ti含量的增加而增强。与Y1Ba2Cu3O7-δ的光谱结果比校,讨论了声子峰及反转结构的物理起因。
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| 关 键 词： | 超导体 红外光谱 远红外光谱 |
| 收稿时间： | 8/4/1988 12:00:00 AM |
INFRARED AND FAR-INFRARED SPECTRA OF THE OXIDE SUPERCONDUCTORS TixY1-xBa2Cu3O7-δ |
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| YE HONG-JUAN,YU ZHI-YI,LU WEI,JI HUA-MEI,CHEN JIAN-XIANG,LI GUANG-YUAN,CAI PEI-XIN and GU WEI-FANG.INFRARED AND FAR-INFRARED SPECTRA OF THE OXIDE SUPERCONDUCTORS TixY1-xBa2Cu3O7-δ[J].Acta Physica Sinica,1989,38(4):586-592. |
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| Authors: | YE HONG-JUAN YU ZHI-YI LU WEI JI HUA-MEI CHEN JIAN-XIANG LI GUANG-YUAN CAI PEI-XIN and GU WEI-FANG |
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| Abstract: | This paper reports the infrared and far-infrared spectra of TixY1-xBa2Cu3O7-δ (x = 0.2, 0.4) superconductors in the temperature range of 300K to 4.2K. Seven reflection peaks have been observed in the range of 50-360cm-1 and identified -to be associated with the vibrations of Ba, Cu, 0 ions, Y, 0 ions, Ti, 0 ions, and Cu-0 bonds respectively. For x - 0.2, two inversion structures were observed, but only one for x = 0.4. In the infrared spectra six reflection and three absorption peaks were observed, the intensities increase with the increase of the Ti content. We discussed the origin of the peaks and the inversion structures comparing with YBa2Cu3O7-δ. |
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