| Автор | H Kurosawa |
| Автор | H Yamane |
| Автор | T Hirai |
| Автор | K Watanabe |
| Автор | S Awaji |
| Автор | N Kobayashi |
| Автор | Y Muto |
| Дата выпуска | 1991-05-01 |
| dc.description | Y-Ba-Cu-O superconducting films were prepared on Y<sub>2</sub>O<sub>3</sub>-stabilized ZrO<sub>2</sub>(YSZ), MgO and Al<sub>2</sub>O<sub>3</sub> polycrystalline substrates by chemical vapour deposition using beta -diketone metal chelates as sources. The c-axis of YBa<sub>2</sub>Cu<sub>3</sub>O<sub>y</sub> was mainly oriented perpendicular to the plane of the films obtained above 800 degrees C. The films deposited on YSZ and MgO at 850 degrees C showed zero resistivity at 90 K and 87 K, respectively. The superconducting transition temperature of 71 K was the highest among the transition temperatures of the films deposited on Al<sub>2</sub>O<sub>3</sub>. The critical current density (J<sub>c</sub>) of the film on YSZ was 8.0*10<sup>3</sup> A cm<sup>-2</sup> and that of the film on MgO was 1.0*10<sup>4</sup> A cm<sup>-2</sup> at 77.3 K and 0 T. J<sub>c</sub> measured at 77.3 K under an applied magnetic field of 15 T parallel to the film planes was 44 A cm<sup>-2</sup> for the film on YSZ and 27 A cm<sup>-2</sup> for the film on MgO. The temperature gradients of the upper critical field (-dB<sub>c2</sub>/dT) determined by the definition of zero resistivity for upper critical field (-dB<sub>c2</sub>/dT) determined by the definition of zero resistivity for the film prepared on the YSZ substrate were 4.7 T K<sup>-1</sup> and 1.0 T K<sup>-1</sup> when the magnetic field was parallel and perpendicular to the film plane, respectively. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Preparation and superconducting properties of Y-Ba-Cu-O films on oxide polycrystalline substrates by chemical vapour deposition |
| Тип | paper |
| DOI | 10.1088/0953-2048/4/5/003 |
| Electronic ISSN | 1361-6668 |
| Print ISSN | 0953-2048 |
| Журнал | Superconductor Science and Technology |
| Том | 4 |
| Первая страница | 192 |
| Последняя страница | 198 |
| Аффилиация | H Kurosawa; Riken Co., Kumagaya, Japan |
| Аффилиация | H Yamane; Riken Co., Kumagaya, Japan |
| Аффилиация | T Hirai; Riken Co., Kumagaya, Japan |
| Аффилиация | K Watanabe; Riken Co., Kumagaya, Japan |
| Аффилиация | S Awaji; Riken Co., Kumagaya, Japan |
| Аффилиация | N Kobayashi; Riken Co., Kumagaya, Japan |
| Аффилиация | Y Muto; Riken Co., Kumagaya, Japan |
| Выпуск | 5 |
