| Автор | C Varanasi |
| Автор | M A Black |
| Автор | P J McGinn |
| Дата выпуска | 1994-01-01 |
| dc.description | Y<sub>2</sub>BaCuO<sub>5</sub> (211) and liquid (L=3 BaCuO<sub>2</sub>:2CuO) were used as the precursor materials to study the effect of additions of BaSnO<sub>3</sub> and PtO<sub>2</sub> on the coarsening behaviour of 211 particles in the liquid above the peritectic temperature of YBa<sub>2</sub>Cu<sub>3</sub>O<sub>6+x</sub> (123), and the magnetic properties after melt texturing. Additions of BaSnO<sub>3</sub> and PtO<sub>2</sub> both reduced the coarsening of 211, but PtO<sub>2</sub> did so much more effectively. The PtO<sub>2</sub> additions were found to refine 211 by altering the 211/liquid interfacial energy and/or Y diffusivity, and not by acting as heterogeneous nucleation sites. BaSnO<sub>3</sub> additions were found to not be inert in the melt. They reduce 211 coarsening by acting as a Y sink. Magnetization measurements at 20, 40 and 60 K on crushed melt-textured 123 samples showed enhanced intragrain flux pinning effects in samples prepared from 211+L+PtO<sub>2</sub> as compared with 211+L+BaSnO<sub>3</sub> or 211+L precursor samples. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | A comparison of the effects of PtO<sub>2</sub> and BaSnO<sub>3</sub> additions on the refinement of Y<sub>2</sub>BaCuO<sub>5</sub> and magnetization of textured YBa<sub>2</sub>Cu<sub>3</sub>O<sub>6+x</sub> |
| Тип | paper |
| DOI | 10.1088/0953-2048/7/1/003 |
| Electronic ISSN | 1361-6668 |
| Print ISSN | 0953-2048 |
| Журнал | Superconductor Science and Technology |
| Том | 7 |
| Первая страница | 10 |
| Последняя страница | 16 |
| Аффилиация | C Varanasi; Dept. of Electr. Eng., Notre Dame Univ., IN, USA |
| Аффилиация | M A Black; Dept. of Electr. Eng., Notre Dame Univ., IN, USA |
| Аффилиация | P J McGinn; Dept. of Electr. Eng., Notre Dame Univ., IN, USA |
| Выпуск | 1 |
