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Planar Hall-Effect Bridge Sensor With NiFeX (X = Cu, Ag, and Au) Sensing Layer

Journal article
Authors F. Qejvanaj
H. Mazraati
S. Jiang
A. Persson
S. R. Sani
Sunjae Chung
F. Magnusson
Johan Åkerman
Published in Ieee Transactions on Magnetics
Volume 51
Issue 11
Pages artikel nr 4005404
ISSN 0018-9464
Publication year 2015
Published at Department of Physics (GU)
Pages artikel nr 4005404
Language en
Keywords Anisotropic magnetoresistance (AMR), antiferromagnetic (AFM), ferromagnetic (FM), magnetic, exchange bias, anisotropy, Engineering, Physics
Subject categories Physical Sciences


This paper presents a new material alloy for planar Hall-effect bridge (PHEB) sensors and the accurate analysis of the resistance and sensitivity of these materials. The sensing layer is based on NiFeX (X = Cu, Ag, and Au). These alloys have a lower resistance without a significant loss of sensitivity. The presented PHEB sensors with NiFeX sensing layer show a coercivity of 1.7 Oe, lower than that of PHEB sensors with NiFe sensing layers, which have coercivities of 2.2 Oe.

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