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 © 2010 IOP Publishing Ltd.
|Book series||Journal of Physics: Conference Series|
|Pages (from-to)||UNSP 122001|
|Publication status||Published - 2010|
|Event||International Conference on Magnetism 2009 - Karlsruhe, Germany|
Duration: 26 Jul 2009 → 31 Jul 2009
|Conference||International Conference on Magnetism 2009|
|Period||26/07/2009 → 31/07/2009|