Temperature effects in exchange-biased planar hall sensors for bioapplications

被引：15
|
作者：
Damsgaard, C. D. [1 ]
Dalslet, B. T. [1 ]
Freitas, S. C. [2 ,3 ]
Freitas, P. P. [2 ,3 ]
Hansen, M. F. [1 ]
机构：
[1] Tech Univ Denmark, Dept Micro & Nanotechnol, DTU Nanotech, DK-2800 Lyngby, Denmark
[2] INESC Microsyst & Nanotechnol, P-1000029 Lisbon, Portugal
[3] Inst Super Tecn, Dept Phys, P-1000 Lisbon, Portugal
来源：
SENSORS AND ACTUATORS A-PHYSICAL | 2009年 / 156卷 / 01期
关键词：
Magnetic biosensors; Planar Hall effect; Anisotropic magnetoresistance; Exchange bias; MAGNETIC MICROBEAD;
D O I：
10.1016/j.sna.2009.03.024
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The temperature dependence of exchange biased planar Hall effect sensors is investigated between T = -10 and 70 degrees 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 degrees C is 0.32%/degrees 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 (R). (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：103 / 108
页数：6
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