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| PrBa2Cu3O6.3和YBa2Cu3O6.3材料的红外声子谱的比较 | |
| 引用本文： | 叶红娟,李标.PrBa2Cu3O6.3和YBa2Cu3O6.3材料的红外声子谱的比较[J].红外与毫米波学报,1998,17(1):37-41. |
| 作者姓名： | 叶红娟 李标 |
| 作者单位： | 1. 中国科学院上海技术物理研究所红外物理国家重点实验室,上海,200083 2. 北京大学物理系介观物理国家实验室,北京,100871 3. 中国科学院物理研究所,超导国家实验室,北京,100080 4. 西安交通大学,电子材料研究所,陕西,西安,710049 |
| 基金项目： | 上海市自然科学基金，942A14008， |
| 摘 要： | 报道了ＹＢａ２Ｃｕ３Ｏ６．３和ＰｒＢａ２Ｃｕ３Ｏ６．３多晶陶瓷ｃ抽取向薄膜中的红外光谱，在ＰｒＢａ２Ｃｕ３Ｏ６．３中以９个声子模，对应于５Ｅｕ＋４Ａ２ｕ振动。在ＹＢａ２Ｃｕ３Ｏ６．３材料中观察到１０个声子模，对应于６Ｅｕ＋４Ａ２ｕ振动，其中Ｐｒ的Ｅｕ和Ａ２ｕ模分别为位于１７０ｃｍ＾－１和１９８ｃｍ＾－１，Ｙ和Ｅｕ和Ａ２ｕ模分别位于１９１ｃｍ＾－１和２１７ｃｍ＾－１ＰｒＢａ２Ｃｕ３Ｏ６．３和ＹＢａ２ |
| 关 键 词： | YBCO PBCO 声子模 超导材料 红外声子谱 |
| 修稿时间： | 1997年7月2日 |
A COMPARISON OF INFRARED PHONON SPECTRA BETWEEN YBa2Cu3O6. 3 and PrBa2Cu3O6. 3 |
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| YE Hong-Juan,LI Biao,XIONG Guang-Cheng,WANG RUI-LAN,LIU Peng.A COMPARISON OF INFRARED PHONON SPECTRA BETWEEN YBa2Cu3O6. 3 and PrBa2Cu3O6. 3[J].Journal of Infrared and Millimeter Waves,1998,17(1):37-41. | |
| Authors: | YE Hong-Juan LI Biao XIONG Guang-Cheng WANG RUI-LAN LIU Peng |
| Abstract: | The infrared spectra of YBa 2Cu 3O 6.3 and PrBa 2Cu 3O 6.3 ceramics and films with c axis orientation were reported. In PrBa 2Cu 3O 6.3 , 9 phonon modes corresponding to 5E u+4A 2u vibration were observed, where the E u and A 2u modes of Pr element were found at 170 and 198cm -1 , respectively.In YBa 2Cu 3O 6.3 ,10 modes corresponding to 6E u+4A 2u vibration were observed, where the E u and A 2u modes of Y element were located at 191 and 217cm -1 , respectively. Since YBa 2Cu 3O 6.3 and PrBa 2Cu 3O 6.3 possess similar crystal structures, by comparing and analyzing their E u and A 2u modes based on the regulation that the vibration frequency is inversely proportional to the square root of the mass, it can be inferred that the valence of Pr in oxygen deficient tetragonal PrBa 2Cu 3O 6.3 is 3 +. |
| Keywords: | YBa 2Cu 3O 6 3 PrBa 2Cu 3O 6 3 infrared spectra phonon modes |
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