Tunneling magnetoresistance sensors for high resolutive particle detection

Albon C, Weddemann A, Auge A, Rott K, Hütten A (2009)
Applied Physics Letters 95(2): 023101.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
Arrays of tunnel magnetoresistance sensors based on MgO as insulating layer are employed to detect magnetic microbeads. For single bead detection, elliptically shaped sensors of axis lengths of 400 and 100 nm are used. Due to high shape anisotropy a linear response of the sensor signal in a magnetic field range between -500 and 500 Oe can be reported. By performing static detection measurements of magnetic microbeads, a distinct signal shape correlated with the position of beads in respect to the sensor can be observed. The experimental data are compared to micromagnetic simulations carried out on a trilayer model.
Stichworte
tunnelling; magnetoresistance; particle detectors; magnetoresistive devices; magnetic tunnelling; magnetic sensors; magnesium compounds
Erscheinungsjahr
2009
Zeitschriftentitel
Applied Physics Letters
Band
95
Ausgabe
2
Art.-Nr.
023101
ISSN
0003-6951
Page URI
https://pub.uni-bielefeld.de/record/1591657

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Albon C, Weddemann A, Auge A, Rott K, Hütten A. Tunneling magnetoresistance sensors for high resolutive particle detection. Applied Physics Letters. 2009;95(2): 023101.
Albon, C., Weddemann, A., Auge, A., Rott, K., & Hütten, A. (2009). Tunneling magnetoresistance sensors for high resolutive particle detection. Applied Physics Letters, 95(2), 023101. doi:10.1063/1.3179241
Albon, C., Weddemann, A., Auge, A., Rott, K., and Hütten, A. (2009). Tunneling magnetoresistance sensors for high resolutive particle detection. Applied Physics Letters 95:023101.
Albon, C., et al., 2009. Tunneling magnetoresistance sensors for high resolutive particle detection. Applied Physics Letters, 95(2): 023101.
C. Albon, et al., “Tunneling magnetoresistance sensors for high resolutive particle detection”, Applied Physics Letters, vol. 95, 2009, : 023101.
Albon, C., Weddemann, A., Auge, A., Rott, K., Hütten, A.: Tunneling magnetoresistance sensors for high resolutive particle detection. Applied Physics Letters. 95, : 023101 (2009).
Albon, Camelia, Weddemann, Alexander, Auge, Alexander, Rott, Karsten, and Hütten, Andreas. “Tunneling magnetoresistance sensors for high resolutive particle detection”. Applied Physics Letters 95.2 (2009): 023101.