Magnetic Field Dependence of Magnetic Bead Signals

被引：1

作者：

Kim, Dong Young ^{[1
]}

Yoon, Seok Soo ^{[1
]}

Lee, Jae-Hoon ^{[2
]}

Kim, Cheol-Gi ^{[2
]}

机构：

[1] Andong Natl Univ, Dept Phys, Andong 36729, South Korea

[2] DGIST, Dept Emerging Mat Sci, Daegu 42988, South Korea

来源：

JOURNAL OF THE KOREAN MAGNETICS SOCIETY | 2018年 / 28卷 / 06期

关键词：

planner Hall effect; biosensor; self-field; iron oxide nanoparticles;

D O I：

10.4283/JKMS.2018.28.6.236

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The magnetic field dependence of magnetic bead signals were measured by planner Hall resistance (PER) and self-field (SF) methods by using PHR sensor. The bead signals of Delta PHR/PHRo, measured with PHR method and ASF/SF, measured with SF method showed high hysteresis and low stability at H < H-eff, which was due to the hysteresis of the magnetic materials of NiFe/Cu/MnIr used in PHR sensor. While, the bead signals measured at H > H-eff showed very stable and Delta SF/SFo showed maximum 14 times improved signal properties than Delta PHR/PHRo. The stable bead signals measured by SF method at H > 2H(eff) can be used to the biosensor.

引用

页码：236 / 241

页数：6

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