Switching in Assymmetric Permalloy Nanorings (image) Helmholtz-Zentrum Berlin für Materialien und Energie Share Print E-Mail Caption A magnetic field pulse switches the initial vortex state to "onion state" with two walls. In the subsequent magnetic snapshots the domain wall motion is shown. After 58 ns both walls meet and annihilate, thus completing the switching process into the opposite sense of rotation. Credit HZB Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.