17 August 2014 Interaction between vortex walls and asymmetric notches in Permalloy nanowires (presentation video)
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Abstract
We have investigated the injection and transmission of vortex domain walls in Permalloy (Py) nanowires through asymmetric triangular notches using Kerr microscopy and micromagnetic simulations. Through coercivity histogram measurements we observed that different vortex chiralities (counterclockwise and clockwise) have different probabilities to be observed after the notch, meaning that the interaction between the vortex wall and the notch is able to change the vortex chirality. Using the experimental results and micromagnetic simulations we were able to obtain the potential produced by the notch on the vortex wall.
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Luiz Sampaio Lima, "Interaction between vortex walls and asymmetric notches in Permalloy nanowires (presentation video)", Proc. SPIE 9167, Spintronics VII, 916710 (17 August 2014); doi: 10.1117/12.2064310; https://doi.org/10.1117/12.2064310
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