Advanced giant magnetoresistance technology for measurement applications

Weiss R, Mattheis R, Reiss G (2013)
Measurement Science And Technology 24(8): 82001.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Autor*in
Weiss, Roland; Mattheis, Roland; Reiss, GünterUniBi
Abstract / Bemerkung
Giant magnetoresistance (GMR) sensors are considered one of the first real applications of nanotechnology. They consist of nm-thick layered structures where ferromagnetic metals are sandwiched by nonmagnetic metals. Such multilayered films produce a large change in resistance (typically 10 to 20%) when subjected to a magnetic field, compared with a maximum change of a few per cent for other types of magnetic sensors. This technology has been intensively used in read heads for hard disk drives and now increasingly finds applications due to the high sensitivity and signal-to-noise ratio. Additionally these sensors are compatible with miniaturization and thus offer a high spatial resolution combined with a frequency range up to the 100 MHz regime and simple electronic conditioning. In this review, we first discuss the basics of the underlying magnetoresistance effects in layered structures and then present three prominent examples for future applications: in the field of current sensing the new GMR sensors offer high bandwidth and good accuracy in a space-saving open loop measurement configuration. In rotating systems they can be used for multiturn angle measurements, and in biotechnology the detection of magnetic particles enables the quantitative measurement of biomolecule concentrations.
Stichworte
single molecule; detection; current sensor; biosensor; hysteresis modeling; magnetic marker; spin valve; electron spin; GMR effect; magnetic storage; motion; nanowires; spline interpolation; multilayer; domain wall; TMR sensors
Erscheinungsjahr
2013
Zeitschriftentitel
Measurement Science And Technology
Band
24
Ausgabe
8
Art.-Nr.
82001
ISSN
0957-0233
eISSN
1361-6501
Page URI
https://pub.uni-bielefeld.de/record/2622198

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Weiss R, Mattheis R, Reiss G. Advanced giant magnetoresistance technology for measurement applications. Measurement Science And Technology. 2013;24(8): 82001.
Weiss, R., Mattheis, R., & Reiss, G. (2013). Advanced giant magnetoresistance technology for measurement applications. Measurement Science And Technology, 24(8), 82001. doi:10.1088/0957-0233/24/8/082001
Weiss, Roland, Mattheis, Roland, and Reiss, Günter. 2013. “Advanced giant magnetoresistance technology for measurement applications”. Measurement Science And Technology 24 (8): 82001.
Weiss, R., Mattheis, R., and Reiss, G. (2013). Advanced giant magnetoresistance technology for measurement applications. Measurement Science And Technology 24:82001.
Weiss, R., Mattheis, R., & Reiss, G., 2013. Advanced giant magnetoresistance technology for measurement applications. Measurement Science And Technology, 24(8): 82001.
R. Weiss, R. Mattheis, and G. Reiss, “Advanced giant magnetoresistance technology for measurement applications”, Measurement Science And Technology, vol. 24, 2013, : 82001.
Weiss, R., Mattheis, R., Reiss, G.: Advanced giant magnetoresistance technology for measurement applications. Measurement Science And Technology. 24, : 82001 (2013).
Weiss, Roland, Mattheis, Roland, and Reiss, Günter. “Advanced giant magnetoresistance technology for measurement applications”. Measurement Science And Technology 24.8 (2013): 82001.
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