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Planar Hall bead array counter microchip with NiFe/IrMn bilayers
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10.1063/1.2988297
/content/aip/journal/jap/104/7/10.1063/1.2988297
http://aip.metastore.ingenta.com/content/aip/journal/jap/104/7/10.1063/1.2988297

Figures

Image of FIG. 1.
FIG. 1.

(a) Top view micrograph of the single PHR cross. The pinning direction as well as the direction of the bias field and sensing current are indicated. (b) The BARC microchip including 24 of single PHE sensors (with 12 single sensors in the middle line and 6 single sensors in each edge line). (c) The packaged microchip under investigation.

Image of FIG. 2.
FIG. 2.

characteristics of the single sensors of the BARC microchip measured with a sensing current of 2 mA: (a) comparison for two single sensors within the middle line and (b) comparison for single sensors in the middle (open circle) and edge (closed circle) lines.

Image of FIG. 3.
FIG. 3.

Low-field characteristics with different sensing currents.

Image of FIG. 4.
FIG. 4.

The sensing current dependence of sensor signal in different applied magnetic fields.

Image of FIG. 5.
FIG. 5.

Real-time voltage changes for single magnetic bead detection. This profile was carried out with the sensing current of 2 mA and in an applied magnetic field of 20 Oe.

Tables

Generic image for table
Table I.

Physical characteristics of Dynabeads® M-280 streptavidin (Ref. 10).

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/content/aip/journal/jap/104/7/10.1063/1.2988297
2008-10-02
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Planar Hall bead array counter microchip with NiFe/IrMn bilayers
http://aip.metastore.ingenta.com/content/aip/journal/jap/104/7/10.1063/1.2988297
10.1063/1.2988297
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