| PrBa2Cu3O6+x(x=1,0.3)中Pr价态随氧含量的变化 |
| |
| 引用本文： | 叶红娟,李 标,李志锋,熊光成,王瑞兰,李宏成,刘 鹏. PrBa2Cu3O6+x(x=1,0.3)中Pr价态随氧含量的变化[J]. 物理学报, 1998, 47(8): 1361-1368 |
| |
| 作者姓名： | 叶红娟 李 标 李志锋 熊光成 王瑞兰 李宏成 刘 鹏 |
| |
| 作者单位： | (1)北京大学物理系，人工微结构和介观物理国家重点实验室，北京 100871; (2)西安交通大学电子材料和器件研究室，西安 710049; (3)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; (4)中国科学院物理研究所超导国家重点实验室，北京 100080 |
| |
| 基金项目： | 上海市自然科学基金(批准号：942A14008)资助的课题. |
| |
| 摘 要： | 报道了陶瓷和c轴取向薄膜 PrBa2Cu3O6+x(x=1,0.3)材料的红外反射光谱，通过比较区分出该材料的沿着c轴振动和沿着a-b平面振动的声子模，PrBa2Cu3O6+x和RBa2Cu3O6+x(x=1-0,R=Y和稀土元素)有类似的晶体结构，分析和比较它们的声子谱，其中尤其是Pr和Y,Pr和其它稀土元素关键词：
|
| 关 键 词： | PBCO 超导薄膜 氧含量 镨价态 |
| 收稿时间： | 1997-11-21 |
UARIATION OF Pr VALENCE VALUE VERSUS OXYGEN CONTENT IN PrBa2Cu3O6+x(x=1,0.3) |
| |
| YE HONG-JUAN,LI BIAO,LI ZHI-FENG,XIONG GUANG-CHENG,WANG RUI-LAN,LI HONG-CHENG and LIU PENG. UARIATION OF Pr VALENCE VALUE VERSUS OXYGEN CONTENT IN PrBa2Cu3O6+x(x=1,0.3)[J]. Acta Physica Sinica, 1998, 47(8): 1361-1368 |
| |
| Authors: | YE HONG-JUAN LI BIAO LI ZHI-FENG XIONG GUANG-CHENG WANG RUI-LAN LI HONG-CHENG LIU PENG |
| |
| Abstract: | The infrared spectra of PrBa2Cu3O6+x (x=1, 0.3) ceramics and films with c-axis orientation are reported in this paper, and the phonon modes in c-axis and ab-plane are distinguished by treating the different vibrational behaviour for film and ceramic samples. Due to the fact that PrBa2Cu3O6+x possesses the similar crystal structure as RBa2Cu3O6+x (R=Y and other rare earth elements), by comparing the phonon spectra, espeacially the B1u (x=1), Eu and A2u (x=0.3) modes of Pr, Y and other rare earth elements, it is found that the valence value of Pr depends on the oxygen content, i.e., the Pr valence is 3+ in PrBa2Cu3O6.3 while it is larger then 3+ in PrBa2Cu3O7. |
| |
| Keywords: | |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《物理学报》浏览原始摘要信息 |
|
点击此处可从《物理学报》下载免费的PDF全文 |
|
