| Автор | K K Saini |
| Автор | C P Sharma |
| Автор | S N Ekbote |
| Автор | D K Suri |
| Автор | P Asthana |
| Автор | Chanderkant |
| Автор | K C Nagpal |
| Автор | S A Agnihotry |
| Автор | S Chandra |
| Дата выпуска | 1990-07-09 |
| dc.description | Calcium-free high-T<sub>c</sub> superconducting compounds of the Tl<sub>2</sub>Ba<sub>2</sub>Ca<sub>n-1</sub>Cu<sub>n</sub>O<sub>x</sub> series have been fabricated with an enhanced onset critical temperature, T<sub>c</sub><sup>on</sup> approximately=97.2 K. The optimisation of parameters has revealed that the choice of nominal composition plays an important role in the formation of the final phase. While a nominal 2201 composition did not yield a high-T<sub>c</sub> phase, compounds with low thallium concentration (1201) gave a 2201 high-T<sub>c</sub> phase. XRD studies confirm the formation of a 2201 phase from 1201 and <sup>1</sup>/<sub>2</sub>201 phases with a approximately=3.86 AA and c approximately=23.23 AA. It has also been found that a high sintering temperature of 97 degrees C maintained for a short duration of three to five minutes is favourable for the enhancement of T<sub>c</sub>. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | The preparation of an enhanced-T<sub>c</sub> superconducting Tl<sub>2</sub>Ba<sub>2</sub>CuO<sub>x</sub> phase by using low Tl concentrations |
| Тип | lett |
| DOI | 10.1088/0953-8984/2/27/013 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 2 |
| Первая страница | 6083 |
| Последняя страница | 6088 |
| Аффилиация | K K Saini; Nat. Phys. Lab., New Delhi, India |
| Аффилиация | C P Sharma; Nat. Phys. Lab., New Delhi, India |
| Аффилиация | S N Ekbote; Nat. Phys. Lab., New Delhi, India |
| Аффилиация | D K Suri; Nat. Phys. Lab., New Delhi, India |
| Аффилиация | P Asthana; Nat. Phys. Lab., New Delhi, India |
| Аффилиация | Chanderkant; Nat. Phys. Lab., New Delhi, India |
| Аффилиация | K C Nagpal; Nat. Phys. Lab., New Delhi, India |
| Аффилиация | S A Agnihotry; Nat. Phys. Lab., New Delhi, India |
| Аффилиация | S Chandra; Nat. Phys. Lab., New Delhi, India |
| Выпуск | 27 |
