SQUID magnetic sensor
US8548542B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2010 |
| Grant date | Oct 1, 2013 |
| Priority date | — |
| Expiry date | Oct 28, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/035
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
There is provided a directly-coupled high-temperature superconductor SQUID magnetic sensor in a single thin film structure, which suppresses flux trapping or jumping generated in the sensor in a magnetic field, prevents the degradation in performance of the SQUID sensor, and operates stably with high sensitivity even in the magnetic field. The SQUID magnetic sensor including a bi-crystal substrate 1 having a bi-crystal grain boundary, pickup loops 7a-7d formed from a first high-temperature superconducting thin film on the bi-crystal substrate 1, and a SQUID ring 3 formed from the first high-temperature superconducting thin film on the bi-crystal grain boundary, directly connected with the pickup loops 7a-7d, wherein a plurality of pickup loops 7a-7d are disposed equally spaced from a bi-crystal grain boundary line 2 so as not to overlap with the bi-crystal grain boundary.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.