Title:
SEMIMANUFACTURE FOR A SENSOR FOR MEASURING A MAGNETIC FIELD
Document Type and Number:
WIPO Patent Application WO2002099451
Kind Code:
A3
Abstract:
The semi-finished article for obtaining a sensor for measuring a magnetic field comprises a substrate (1) and a first magnetic element (2), a second magnetic element (3), a third magnetic element (4), and a fourth magnetic element (5) in a bridge configuration. Each of the magnetic elements contains a first magnetic layer (10) having an axis of magnetization (11), the axes of magnetization (11) of the first magnetic layers of the elements (2, 3) in the first bridge portion (8) as well as the axes of magnetization of the elements (4, 5) in the second bridge portion (9) being oriented so as to extend in opposite directions. Close to each of the contacts (6, 7), the axis of magnetization (11) of the element of the first bridge portion (8) is oppositely oriented with respect to the element of the second bridge portion (9). Magnetic flux-concentrating means (14) are present for the first magnetic element (2) of the first bridge portion (8) and for the element of the second bridge portion (9) having the same orientation of the axis of magnetization (11) as the first element (2).
Inventors:
VAN ZON JOANNES B A D
RUIGROK JACOBUS J M
GIEBELER CARSTEN
RUIGROK JACOBUS J M
GIEBELER CARSTEN
Application Number:
PCT/IB2002/001916
Publication Date:
April 17, 2003
Filing Date:
May 29, 2002
Export Citation:
Assignee:
KONINKL PHILIPS ELECTRONICS NV (NL)
International Classes:
G01R33/09; H01F10/16; H01F10/32; H01F41/18; H01L43/08; H01L43/12; (IPC1-7): G01R33/09
Domestic Patent References:
| WO2000079298A2 | 2000-12-28 | |||
| WO2000010023A1 | 2000-02-24 |
Foreign References:
| US5617071A | 1997-04-01 |
Other References:
FREITAS P P ET AL: "Spin valve sensors", SENSORS AND ACTUATORS A, ELSEVIER SEQUOIA S.A., LAUSANNE, CH, vol. 81, no. 1-3, April 2000 (2000-04-01), pages 2 - 8, XP004191239, ISSN: 0924-4247
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