Abstract
The depinning field of a domain wall in a permalloy nanostructure can be used to detect the presence of a magnetic particle. In this device the displacement of the domain wall in a sweeping magnetic field produces a variation of the voltage drop across a corner due to the anisotropic magnetoresistance effect and hence an electrical signal. In this paper we use micromagnetic simulations to calculate the output signal of a particularly shaped device in the presence of a single synthetic antiferromagnetic nanoparticle. The calculated magnetoresistive signal is in good agreement with corresponding experimental data
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