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1. (AU2003206904) Device for sensing a magnetic field

Office : Australia
Application Number: 2003206904 Application Date: 31.01.2003
Publication Number: 2003206904 Publication Date: 17.07.2003
Publication Kind : A
Prior PCT appl.: Application Number:EP2003001518 ; Publication Number: Click to see the data
IPC:
G01R 33/035
G PHYSICS
01
MEASURING; TESTING
R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
33
Arrangements or instruments for measuring magnetic variables
02
Measuring direction or magnitude of magnetic fields or magnetic flux
035
using superconductive devices
Applicants: 4-D NEUROIMAGING OY
COMMISSARIAT ENERGIE ATOMIQUE
Inventors: Fermon, Claude
Pannetier, Myriam
Simola, Juha
Priority Data:
Title: (EN) Device for sensing a magnetic field
Abstract:
(EN) The device for sensing a magnetic field comprises a closed superconducting pick-up loop (1) having a path width (d) etched out of a single layer superconducting thin film and provided with a constriction (15) having a width (w) of narrow dimension smaller than the path width (d). The closed superconducting pick-up loop (1) constitutes a flux-to-field transformer (FFDT). At least one magnetoresistive element (2) is placed on top of or below the superconducting thin film, is isolated from the superconducting thin film by a thin insulating layer and is located so that an active part of the magnetoresistive element (2) is at the location of the constriction (15) and has a width equal to or less than the width of the constriction (15). The active part of the magnetoresistive element (2) is oriented so that the bias current in this active part is directed essentially along the constriction (15), orthogonally to the width of narrow dimension.
Also published as:
EP1588177JP2006514272US20060220641CA2514869WO/2004/068158