| Автор | P A J de Groot |
| Автор | P C Lanchester |
| Автор | M T Weller |
| Автор | J R Grasmeder |
| Автор | G P Rapson |
| Автор | C E Meats |
| Дата выпуска | 1988-06-01 |
| dc.description | Samples of notional composition BiSrCaCu<sub>2</sub>O<sub>x</sub> have been prepared and shown to have a majority phase with lattice parameters a=5.395(3) AA, b=5.406(5) AA and c=30.84(1) AA which is superconducting below 80 K. Both the low-field DC magnetisation and resistivity indicate the presence of a minority superconducting phase with T<sub>c</sub>>100 K. The intragrain critical current density J<sub>c</sub> inferred from high-field magnetisation measurements on powder samples is estimated to be 5*10<sup>5</sup> A cm<sup>-2</sup> at 4.2 K and 1 T, which is similar to that observed in YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub>. The form of the temperature and field dependence of J<sub>c</sub> is also similar to that observed in YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub>. However, relaxation effects in the magnetisation are more pronounced, which is indicative of smaller flux pinning especially at high temperatures. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | High-field magnetisation and the critical current density in superconducting BiSrCaCu<sub>2</sub>O<sub>x</sub> |
| Тип | lett |
| DOI | 10.1088/0305-4608/18/6/006 |
| Print ISSN | 0305-4608 |
| Журнал | Journal of Physics F: Metal Physics |
| Том | 18 |
| Первая страница | L123 |
| Последняя страница | L125 |
| Аффилиация | P A J de Groot; Dept. of Phys., Southampton Univ., UK |
| Аффилиация | P C Lanchester; Dept. of Phys., Southampton Univ., UK |
| Аффилиация | M T Weller; Dept. of Phys., Southampton Univ., UK |
| Аффилиация | J R Grasmeder; Dept. of Phys., Southampton Univ., UK |
| Аффилиация | G P Rapson; Dept. of Phys., Southampton Univ., UK |
| Аффилиация | C E Meats; Dept. of Phys., Southampton Univ., UK |
| Выпуск | 6 |
