Topologically confined vortex oscillations in hybrid [Co/Pd](8)-Permalloy structures

Autor: Matthew T. Bryan, Laura J. Heyderman, Stephanie E. Stevenson, Georg Heldt, Thomas Thomson, Rajesh V. Chopdekar, Jörg Raabe, Gino Hrkac
Rok vydání: 2014
Předmět:
Zdroj: APPLIED PHYSICS LETTERS
DOI: 10.1063/1.4873937
Popis: We report on a reciprocal magnetic interaction mechanism in micrometer-sized hybrid Co/Pd-Permalloy square elements. Time-resolved scanning transmission X-ray microscopy using X-ray magnetic circular dichroism contrast together with micromagnetic simulations demonstrate that there exists a mutual imprint of vortices in the Permalloy and in the stripe domains of the Co/Pd. This results in a hybrid magnetic domain structure leading to a domain confined gyroscopic vortex precession. These observations open the exciting possibility for topological control of vortex core motion.
Databáze: OpenAIRE