| Автор | Jinrong Min |
| Автор | Jingkui Liang |
| Автор | Cong Wang |
| Автор | Fei Wu |
| Автор | Cheng Dong |
| Автор | Guanghui Rao |
| Дата выпуска | 1995-07-24 |
| dc.description | A new compound Pb(Sr<sub>1.2</sub>La<sub>0.8</sub>)Gd<sub>2</sub>Cu<sub>2</sub>O<sub>9.06</sub> has been synthesized and characterized in this letter. The Pb ions in the rock-salt-type monolayer of this compound occur in the form of mixed valence states, i.e., Pb<sup>4+</sup> and Pb<sup>2+</sup>, and the average cationic valence is 3.14, close to that in (Pb<sub>0.5</sub>Cd<sub>0.5</sub>)Sr<sub>2</sub>YCu<sub>2</sub>O<sub>7</sub>. It seems to us that the single-Pb-layer Pb-based layered compounds are stable only when the average cationic valence in this layer is close to three. The crystal structure refinement results indicate that the PbO layer is highly distorted, and no Cu ions enter this monolayer. The high distortion of the PbO layer makes the Pb-1222 phase preferentially orientate more readily. This compound does not superconduct. The nonsuperconductivity is not caused by low charge carrier concentration. It may be caused by the Gd<sub>2</sub>O<sub>2</sub> layers, which affect not only the buckling degree of conducting CuO<sub>2</sub> planes but the coupling effect between adjacent CuO<sub>2</sub> planes as well. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Characterization of a new Pb-based 1222 cuprate Pb(Sr<sub>1.2</sub>La<sub>0.8</sub>)Gd<sub>2</sub>Cu<sub>2</sub>O<sub>9.06</sub> |
| Тип | lett |
| DOI | 10.1088/0953-8984/7/30/003 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 7 |
| Первая страница | L405 |
| Последняя страница | L410 |
| Аффилиация | Jinrong Min; Inst. of Phys., Chinese Acad. of Sci., Beijing, China |
| Аффилиация | Jingkui Liang; Inst. of Phys., Chinese Acad. of Sci., Beijing, China |
| Аффилиация | Cong Wang; Inst. of Phys., Chinese Acad. of Sci., Beijing, China |
| Аффилиация | Fei Wu; Inst. of Phys., Chinese Acad. of Sci., Beijing, China |
| Аффилиация | Cheng Dong; Inst. of Phys., Chinese Acad. of Sci., Beijing, China |
| Аффилиация | Guanghui Rao; Inst. of Phys., Chinese Acad. of Sci., Beijing, China |
| Выпуск | 30 |
