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Giant Magnetoresistance Materials and Integrated Magnetic Sensors
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English
Abstract
Large changes in resistance with magnetic field exhibited by recently discovered thin-film multilayer structures offer new opportunities in the sensors field. Compatibility of these Giant Magnetoresistive (GMR) materials with conventional semiconductor processing technology and semiconductor underlayers allows the production of inexpensive, ultra-small, smart sensors with enhanced magnetic sensitivity. The action of GMR materials is described along with their application to sensor configurations for detecting magnetic fields, magnetic field gradients, and magnetic fields from currents. Characteristics of these sensors are discussed and compared to conventional magnetic field sensors. Finally, the exciting combination of GMR materials with semiconductor underlayers in smart sensors with linear or digital (switched) outputs is explored.
Citation
Smith, C. and Brown, J., "Giant Magnetoresistance Materials and Integrated Magnetic Sensors," SAE Technical Paper 970603, 1997, https://doi.org/10.4271/970603.Also In
References
- Baibich M. N. Broto J. M. Fert A. Nguyen Van Dau F. Petroff F. Eitenne P. Creuzet G. Friederich A. Chazelas J. “Giant Magnetoresistance of (001)Fe/(001)Cr Magnetic Superlattices,” Phys. Rev. Lett. 61 2472 2475 1988
- Brown J. “GMR Materials: Theory and Applications,” Sensors Magazine 11 42 48 September 1994
- Prinz G. A. “Spin Polarized Transport'” Physics Today 48 58 63 April 1995
- Daughton J. Chen Y. “GMR Materials for Low Field Applications,” IEEE Trans. Magn. 29 2705 2710 1993
- Daughton J. Brown J. Beech R. Pohm A. Kude W. “Magnetic Field Sensors Using GMR Multilayer,” IEEE Trans. Magn. 30 4608 4610 1994
- Strassberg D. “Sensors and coded particles foil counterfeiters,” EDN August 15 1996
- Brown J. L. “High Sensitivity Magnetic Field Sensor Using GMR Materials with Integrated Electronics,” Proceedings of the Symposium on Circuits and Systems Seatle, WA January 1995