Vortex Trapping in Hybrid Magnetometers

Details Vortex Trapping in Hybrid Magnetometers Vortex Trapping in Hybrid Magnetometers

2008-09-18

arxiv.org/abs/0809.3114v1

Physics

Condensed Matter

Superconductivity

Scientific paper

Hybrid magnetometers based on a normal conducting sensor and a superconducting flux concentrator have been investigated. When this sensor is operated in an unshielded environment flux vortices can be trapped in the superconducting body when the sensor is cooled. Thermal hopping of the trapped vortices gives rise to 1/f noise. The mechanism for vortex trapping has been investigated. A new model for the critical field for vortex trapping and vortex densities has been derived. Experimental verification on YBa2Cu3O7-delta (YBCO) strips with a Scanning SQUID Microscope shows very good agreement between measurements and the new theory. The results have been applied in a hybrid magnetometer design based on a bismuth Hall sensor and an YBCO flux concentrator. Measurements show a field gain up to G=7 with a large effective range of 175uT.

Affiliated with

Also associated with

No associations

Rating

Vortex Trapping in Hybrid Magnetometers does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Vortex Trapping in Hybrid Magnetometers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vortex Trapping in Hybrid Magnetometers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-281145