| Автор | Xingjiang Zhou |
| Автор | Jianqi Li |
| Автор | Fei Wu |
| Автор | Cheng Dong |
| Автор | Jingwei Li |
| Автор | Shunlian Jia |
| Автор | Yushu Yao |
| Автор | Zhongxian Zhao |
| Дата выпуска | 1994-11-01 |
| dc.description | The infinite-layer (Sr<sub>1-x</sub>Pr<sub>x</sub>)CuO<sub>2</sub> superconductor has been synthesized under high pressure. It is found that the preparation conditions, especially the calcination temperature of the starting materials and the annealing temperature under high pressure, play a key role for obtaining superconducting samples. The composition range in which superconductivity occurs in the (Sr<sub>1-x</sub>Pr<sub>x</sub>)CuO<sub>2</sub> samples is =0.13-0.16. In this composition range, the sample with x=0.14 shows the maximum transition temperature of T<sub>c(onset</sub>)=46 K and the normal-state resistivity of the samples tends to change from semiconductor-like behaviour to metal-like behaviour with increasing Pr<sup>3+</sup> doping content. The microstructure of the infinite-layer (Sr<sub>1-x</sub>Pr<sub>x</sub>)CuO<sub>2</sub> samples has been characterized by SEM and TEM. From electron diffraction analysis, as well as EDAX composition analysis, it has been found that in addition to the main infinite-layer phase, at least two impurity phases are present in the samples. One is an Sr-rich impurity phase having a monoclinic structure with a=4.8 AA and c=4.8 AA. Antiphase domains have been observed in this phase. The other impurity has has an orthorhombic structure with a=6.6 AA, b=5.7 AA and c=4.7 AA. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | The high-pressure synthesis, microstructure and superconductivity of infinite-layer (Sr<sub>1-x</sub>Pr<sub>x</sub>)CuO<sub>2</sub> |
| Тип | paper |
| DOI | 10.1088/0953-2048/7/11/011 |
| Electronic ISSN | 1361-6668 |
| Print ISSN | 0953-2048 |
| Журнал | Superconductor Science and Technology |
| Том | 7 |
| Первая страница | 832 |
| Последняя страница | 840 |
| Аффилиация | Xingjiang Zhou; Inst. of Phys., Acad. Sinica, Beijing, China |
| Аффилиация | Jianqi Li; Inst. of Phys., Acad. Sinica, Beijing, China |
| Аффилиация | Fei Wu; Inst. of Phys., Acad. Sinica, Beijing, China |
| Аффилиация | Cheng Dong; Inst. of Phys., Acad. Sinica, Beijing, China |
| Аффилиация | Jingwei Li; Inst. of Phys., Acad. Sinica, Beijing, China |
| Аффилиация | Shunlian Jia; Inst. of Phys., Acad. Sinica, Beijing, China |
| Аффилиация | Yushu Yao; Inst. of Phys., Acad. Sinica, Beijing, China |
| Аффилиация | Zhongxian Zhao; Inst. of Phys., Acad. Sinica, Beijing, China |
| Выпуск | 11 |
