Abstract
The temperature dependence of exchange biased planar Hall effect sensors is investigated between T = −10 and 70 °C. It is shown that a single domain model describes the system well and that the temperature coefficient of the low-field sensitivity at T = 25 °C is 0.32%/°C. A procedure for temperature correction by use of a reference sensor is demonstrated. Consequences for magnetic biosensing are exemplified with calculations on M-280 Dynabeads®.
Original language | English |
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Journal | Sensors and Actuators A: Physical |
Volume | 156 |
Issue number | 1 |
Pages (from-to) | 103-108 |
ISSN | 0924-4247 |
DOIs | |
Publication status | Published - 2009 |
Event | EUROSENSORS XXII - Dresden, Germany Duration: 7 Sept 2008 → 10 Sept 2008 Conference number: 22 |
Conference
Conference | EUROSENSORS XXII |
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Number | 22 |
Country/Territory | Germany |
City | Dresden |
Period | 07/09/2008 → 10/09/2008 |
Keywords
- Magnetic biosensors
- Planar Hall effect
- Anisotropic magnetoresistance
- Exchange bias