Superconductive quantum interference device (SQUID) system for measuring magnetic susceptibility of materials
US7394246B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Nov 24, 2006 |
| Grant date | Jul 1, 2008 |
| Priority date | — |
| Expiry date | Nov 24, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/16
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A superconductive quantum interference device (SQUID) system is provided for measuring the alternating current (AC) magnetic susceptibility of material at a single frequency or a mixing frequency from multiple frequencies, such as mf1+nf2, where f1 and f2 are two excitation frequencies of two primary coils. The system includes a magnetic-flux sourcing unit for producing an AC magnetic flux on a sample and a magnetic-flux reading unit for reading the induced magnetic flux from the sample via a magnetic flux transformer. The magnetic-flux reading unit includes a SQUID set for detecting the induced magnetic flux, so as to obtain the magnetic susceptibility of the sample in converting calculation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.