Toward the magnetoresistive detection of single magnetic nanoparticles: New strategies for particle detection by adjustment of sensor shape

Weddemann A, Auge A, Albon C, Wittbracht F, Hütten A (2010)
JOURNAL OF APPLIED PHYSICS 107(10).

Journal Article | Published | English

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Abstract
In this work, different approaches in order to enhance the sensitivity of tunnel magnetoresistive sensors are discussed by means of finite element simulations. Several sensor layouts consisting of a free CoFeB sensing layer and a pinned bottom electrode are investigated. A decrease in the detection threshold is predicted by introducing magnetic areas at the sensor boundaries which can be easily switched due to a combined interaction of exchange contribution and stray field coupling of the layers. (C) 2010 American Institute of Physics. [doi:10.1063/1.3427549]
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Weddemann A, Auge A, Albon C, Wittbracht F, Hütten A. Toward the magnetoresistive detection of single magnetic nanoparticles: New strategies for particle detection by adjustment of sensor shape. JOURNAL OF APPLIED PHYSICS. 2010;107(10).
Weddemann, A., Auge, A., Albon, C., Wittbracht, F., & Hütten, A. (2010). Toward the magnetoresistive detection of single magnetic nanoparticles: New strategies for particle detection by adjustment of sensor shape. JOURNAL OF APPLIED PHYSICS, 107(10).
Weddemann, A., Auge, A., Albon, C., Wittbracht, F., and Hütten, A. (2010). Toward the magnetoresistive detection of single magnetic nanoparticles: New strategies for particle detection by adjustment of sensor shape. JOURNAL OF APPLIED PHYSICS 107.
Weddemann, A., et al., 2010. Toward the magnetoresistive detection of single magnetic nanoparticles: New strategies for particle detection by adjustment of sensor shape. JOURNAL OF APPLIED PHYSICS, 107(10).
A. Weddemann, et al., “Toward the magnetoresistive detection of single magnetic nanoparticles: New strategies for particle detection by adjustment of sensor shape”, JOURNAL OF APPLIED PHYSICS, vol. 107, 2010.
Weddemann, A., Auge, A., Albon, C., Wittbracht, F., Hütten, A.: Toward the magnetoresistive detection of single magnetic nanoparticles: New strategies for particle detection by adjustment of sensor shape. JOURNAL OF APPLIED PHYSICS. 107, (2010).
Weddemann, Alexander, Auge, Alexander, Albon, Camelia, Wittbracht, Frank, and Hütten, Andreas. “Toward the magnetoresistive detection of single magnetic nanoparticles: New strategies for particle detection by adjustment of sensor shape”. JOURNAL OF APPLIED PHYSICS 107.10 (2010).
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