Low-noise flux-gate magnetic-field sensors using ring- and rod-core geometries

Applied Physics Letters

Volumn 78, Issue 13, 2001, Pages 1897-1899

  Koch, R H ^a   Rozen, J R ^a  

^a IBM T J WATSON RESEARCH CENTER   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0035952836     PISSN: 00036951     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.1358852     Document Type: Article

References (8)

1. For excellent reviews, see F. Primdahl, J. Phys. E 12, 241 (1979): P. Ripka, Sens. Actuators A 33, 129 (1942).
2. For excellent reviews, see F. Primdahl, J. Phys. E 12, 241 (1979): P. Ripka, Sens. Actuators A 33, 129 (1942).
3. R. H. Koch, J. G. Deak, and G. Grinstein, Appl. Phys. Lett. 75, 3862 (1999).
4. J. G. Deak, R. H. Koch, G. E. Guthmiller, and R. E. Fontana, IEEE Trans. Magn. 36, 2052 (2000).
5. J. G. Deak, A. H. Miklich, J. Slonczewski, and R. H. Koch, Appl. Phys. Lett. 69, 1157 (1996).
6. Billingsley Magnetics, Inc., Brookville, MD 20833.
7. G. P. Farrell and E. W. Hill, IEEE Trans. Magn. 31, 4050 (1995).
8. When the two coils are physically close to each other current noise in one pickup coil, either from the preamplifier or the thermal noise of the coil resistance, will create field noise that will result in a correlated voltage noise in the second coil. The cross-power noise includes this contribution from the readout electronics.