| Автор | T A Prikhna |
| Автор | W Gawalek |
| Автор | V E Moshchil |
| Автор | Ch Wende |
| Автор | V S Melnikov |
| Автор | F Sandiumenge |
| Автор | N Vilalta |
| Автор | P A Nagorny |
| Автор | T Habisreuther |
| Автор | S N Dub |
| Автор | A B Surzhenko |
| Дата выпуска | 1998-10-01 |
| dc.description | The structure of dense (99%) high-pressure (2-5 GPa)-high-temperature treated single-phase and melt-textured YBaCuO and NdBaCuO ceramics has been investigated. High-pressure-high-temperature (HP-HT) treatment under 5 GPa in contact with annealed zirconia allows us to prevent oxygen losses from Nd123 and Y123 structures even when heated up to 1100 and , respectively, and thus, keep the superconductive characteristics. For MT-YBaCuO ceramics, a more than twofold decrease in the anisotropy of critical current density occurs because of doubling critical current density in the direction of the c-axis of Y123 crystallites (in the perpendicular direction it remains almost unchanged) may be explained by the increase in dislocation density in the (001) plane (from up to ) and by narrowing of twin domains (from 150 down to 20 nm). For MT-NdBaCuO, narrowing of spacing between the twins has been observed in the polarized optical microscope. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | High-pressure-high-temperature effect on the structure of YBaCuO- and NdBaCuO-based superconductive ceramics |
| Тип | paper |
| DOI | 10.1088/0953-2048/11/10/050 |
| Electronic ISSN | 1361-6668 |
| Print ISSN | 0953-2048 |
| Журнал | Superconductor Science and Technology |
| Том | 11 |
| Первая страница | 1123 |
| Последняя страница | 1128 |
| Выпуск | 10 |
