Hostname: page-component-cd9895bd7-mkpzs Total loading time: 0 Render date: 2024-12-25T16:20:24.411Z Has data issue: false hasContentIssue false
  • English
  • Français

Flux-gate like 2D magnetometer based on a single magnetic tunnel junction

Published online by Cambridge University Press:  04 March 2005

G. Malinowski ,
M. Hehn ,
J.-B. Kammerer ,
M. Sajieddine ,
E. Jouguelet ,
L. Hébrard ,
P. Alnot ,
F. Braun  and
A. Schuhl
G. Malinowski
Affiliation:
LPM, UMR CNRS 7556, BP 239, 54506 Vandœuvre-lès-Nancy Cedex, France
M. Hehn*
Affiliation:
LPM, UMR CNRS 7556, BP 239, 54506 Vandœuvre-lès-Nancy Cedex, France
J.-B. Kammerer
Affiliation:
LEPSI, 23 rue du Loess, BP 20, 67037 Strasbourg Cedex 2, France
M. Sajieddine
Affiliation:
LPM, UMR CNRS 7556, BP 239, 54506 Vandœuvre-lès-Nancy Cedex, France
E. Jouguelet
Affiliation:
LPM, UMR CNRS 7556, BP 239, 54506 Vandœuvre-lès-Nancy Cedex, France
L. Hébrard
Affiliation:
LEPSI, 23 rue du Loess, BP 20, 67037 Strasbourg Cedex 2, France
P. Alnot
Affiliation:
LPMIA, UMR CNRS 7040, BP 239, 54506 Vandœuvre-lès-Nancy Cedex, France
F. Braun
Affiliation:
LEPSI, 23 rue du Loess, BP 20, 67037 Strasbourg Cedex 2, France
A. Schuhl
Affiliation:
LPM, UMR CNRS 7556, BP 239, 54506 Vandœuvre-lès-Nancy Cedex, France
*
[email protected]
Get access

Abstract

The pick-up coil of a conventional flux-gate sensor has beenreplaced by a magnetic tunnel junction. With this respect, themagnetic properties of tunnel junctions have been optimized to berelevant to flux-gate operation i.e. low-coercitive field andreproducibility of the dynamic switchings. Furthermore, the use ofan alternative two-dimensional magnetic driving field extends theuse of the flux-gate like sensor to make a 2D magnetometer with asingle magnetic tunnel junction without any cross sensitivity. Afirst demonstration is given with sensitivity above 500 V/T anda noise level evaluated to 2  $\rm \mu T/ \sqrt{Hz}$ with an optimizedmagnetoresistive response.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 30 , Issue 2 , May 2005 , pp. 113 - 116
Copyright
© EDP Sciences, 2005

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Popović, R.S., Flanagan, J.A., Besse, P.-A., Sensor. Actuact. A 56, 39 (1996) CrossRef
Ripka, P., Sensor. Actuact. A 106, 8 (2003) CrossRef
Dimitropoulos, P.D., Avaritsiotis, J.N., Hristoforou, E., Sensor. Actuact. A 107, 238 (2003) CrossRef
Slonczewski, J.C., Phys. Rev. B 39, 6995 (1989) CrossRef
Moodera, J.S., Kinder, L.R., Wong, T.M., Meservey, R., Phys. Rev. Lett. 74, 3273 (1995) CrossRef
Stoner, E.C., Wolfarth, E.P., Philos. T. Roy. Soc. A 240, 599 (1948) CrossRef
Kammerer, J.-B., Hebrard, L., Hehn, M., Braun, F., Alnot, P., Schuhl, A., IEEE Sensors J. 4, 313 (2004) CrossRef
Montaigne, F., Nassar, J., Vaurès, A., Nguyen Van, F. Dau, F. Petroff, A. Schuhl, A. Fert, Appl. Phys. Lett. 73, 2829 (1998) CrossRef
Chiesi, L., Kejik, P., Janossy, B., Popović, R.S., Sensor. Actuact. A 82, 174 (2000) CrossRef
P.M. Drljaca, P. Kejik, F. Vincent, R.S. Popović, in Proceeding of TRANSDUCERS'03, 2003, p. 304