| Автор | K Terryll |
| Автор | K V Rao |
| Автор | L N Wang |
| Автор | I V Zakharchenko |
| Автор | M Muhammed |
| Автор | U Balachandran |
| Дата выпуска | 1995-05-01 |
| dc.description | Decomposition of YBa<sub>2</sub>Cu<sub>4</sub>O<sub>8</sub> into YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7- delta </sub>+CuO in the silver-sheathed tape form has been studied. In these tapes, the excess CuO is expected to provide additional flux pinning centres and consequently to increase the critical current density beyond that of an equivalent conventional YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7- delta </sub>. Silver-sheathed YBa<sub>2</sub>Cu<sub>4</sub>O<sub>8</sub> tapes were produced by first using an oxalate solution method to coprecipitate (submicrometre to nanometre size) precursor powder that was then drawn into tapes by a powder in tube technique. From a series of investigations of the parameters for decomposition of YBa<sub>2</sub>Cu<sub>4</sub>O<sub>8</sub>, the optimal time and temperature for processing these tapes were found to be 25 min and 915 degrees C, with oxygenation for 48 h at 450 degrees C. This procedure yielded the best J<sub>c</sub> of 2.2*10<sup>4</sup> A cm<sup>-2</sup> in self-field at 5 K. This critical current value is an enhancement of two orders of magnitude from the value obtained in as-drawn tape. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Silver-sheathed YBa<sub>2</sub>Cu<sub>4</sub>O<sub>8</sub> tapes: decomposition, characterization, and critical current enhancement |
| Тип | paper |
| DOI | 10.1088/0953-2048/8/5/005 |
| Electronic ISSN | 1361-6668 |
| Print ISSN | 0953-2048 |
| Журнал | Superconductor Science and Technology |
| Том | 8 |
| Первая страница | 296 |
| Последняя страница | 302 |
| Аффилиация | K Terryll; Dept. of Condensed Matter Phys., R. Inst. of Technol., Stockholm, Sweden |
| Аффилиация | K V Rao; Dept. of Condensed Matter Phys., R. Inst. of Technol., Stockholm, Sweden |
| Аффилиация | L N Wang; Dept. of Condensed Matter Phys., R. Inst. of Technol., Stockholm, Sweden |
| Аффилиация | I V Zakharchenko; Dept. of Condensed Matter Phys., R. Inst. of Technol., Stockholm, Sweden |
| Аффилиация | M Muhammed; Dept. of Condensed Matter Phys., R. Inst. of Technol., Stockholm, Sweden |
| Аффилиация | U Balachandran; Dept. of Condensed Matter Phys., R. Inst. of Technol., Stockholm, Sweden |
| Выпуск | 5 |
