Interaction between vortex walls and asymmetric notches in Permalloy nanowires (presentation video)

Luiz Sampaio Lima

doi:10.1117/12.2064310

17 August 2014 Interaction between vortex walls and asymmetric notches in Permalloy nanowires (presentation video)

Luiz Sampaio Lima

Proceedings Volume 9167, Spintronics VII; 916710 (2014) https://doi.org/10.1117/12.2064310
Event: SPIE NanoScience + Engineering, 2014, San Diego, California, United States

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.

Citation Download Citation

Luiz Sampaio Lima "Interaction between vortex walls and asymmetric notches in Permalloy nanowires (presentation video)", Proc. SPIE 9167, Spintronics VII, 916710 (17 August 2014); https://doi.org/10.1117/12.2064310

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