| Автор | M Chandra Sekhar |
| Автор | B GopalaKrishna |
| Автор | U V Varadaraju |
| Автор | S V Suryanarayana |
| Дата выпуска | 1996-09-01 |
| dc.description | Samples with the stoichiometric composition with x = 0.1 and y = 0.1, 0.2, 0.3 and 0.4 were prepared by the solid state reaction method. The role of Na and K doped at the Ca and Sr sites simultaneously in the Bi-2212 composition was studied. From the x-ray diffraction data it was found that the structure is single-phase Bi-2212. From the resistivity data the varies from 63 to 67 K for different dopant levels. The diamagnetic nature of the samples was confirmed by ac susceptibility measurements. The oxygen content was determined by the two-step iodometric titration technique. The present results on the effect of double doping are compared with those of single dopants published earlier by our group. The microstructures of the samples were examined by scanning electron microscopy. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Superconductivity in the Bi - Sr/K - Ca/Na - Cu - O system |
| Тип | paper |
| DOI | 10.1088/0953-2048/9/9/008 |
| Electronic ISSN | 1361-6668 |
| Print ISSN | 0953-2048 |
| Журнал | Superconductor Science and Technology |
| Том | 9 |
| Первая страница | 756 |
| Последняя страница | 760 |
| Выпуск | 9 |
