| Автор | S-G Lee |
| Автор | Y Hwang |
| Автор | J-T Kim |
| Автор | Y K Park |
| Дата выпуска | 1999-11-01 |
| dc.description | We have studied the planar-type single-layer second-order high-T<sub>c</sub> SQUID gradiometer that detects the transverse field gradient, d<sup>2</sup>B<sub>z</sub>/dx<sup>2</sup>. The gradiometer consists of three parallel-connected rectangular pickup loops that are directly coupled to a SQUID. The pickup loops are designed in such a way that the SQUID measures the difference in the differential screening currents of neighbouring pickup loops. The SQUID has either step-edge or bicrystal Josephson junctions. The gradiometer was made from a single layer of YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub> film on a 1 cm × 1 cm chip. The response of the gradiometer was tested in various flux distributions generated by three identical multiturn film coils patterned on the same chip in parallel with each pickup loop. The balanced gradiometer responded sensitively only to the second-order field gradient. Reduction of the inductive coupling between loops improved the intrinsic balance. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Characteristics of the planar second-order high-T<sub>c</sub> SQUID gradiometer |
| Тип | paper |
| DOI | 10.1088/0953-2048/12/11/372 |
| Electronic ISSN | 1361-6668 |
| Print ISSN | 0953-2048 |
| Журнал | Superconductor Science and Technology |
| Том | 12 |
| Первая страница | 937 |
| Последняя страница | 939 |
| Выпуск | 11 |
