Título:
|
Direct evidence of imprinted vortex states in the antiferromagnet of exchange biased microdisks
|
Autor/a:
|
Salazar Álvarez, Germán; Kavich, J. J.; Sort Viñas, Jordi; Mugarza, Aitor; Stepanow, S.; Potenza, A.; Marchetto, H.; Dhesi, S. S.; Baltz, Vincent; Dieny, B.; Weber, A.; Heyderman, L. J.; Nogués, Josep; Gambardella, Pietro; American Physical Society
|
Abstract:
|
This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. |
Abstract:
|
The magnetic domain structure of patterned antiferromagnetic/ferromagnetic Ir20Mn80/Ni80Fe20 bilayer microdisk arrays has been investigated using layer-specific polarized x-ray photoemission electron microscopy and magnetic circular dichroism. Magnetic imaging at the Fe and Mn L-edge resonances provided direct evidence of a vortex state imprinted into the antiferromagnet at the interface. The opposite magnetic contrast between the layers indicated a reversed chirality of the imprinted vortex state, and a quantitative analysis of the magnetic moment from the dichroism spectra showed that uncompensated Mn spins equivalent to about 60% of a monolayer of bulk Ir20Mn80 contributed to the imprinted information at the interface. |
Materia(s):
|
-Antiferromagnetism -Atomic force microscopy -Ferromagnetism -Nickel -Rotating flows -X-ray absorption spectroscopy -Electrons -Interface structure -Chiral symmetries -Monolayers |
Derechos:
|
open access
Tots els drets reservats.
https://rightsstatements.org/vocab/InC/1.0/ |
Tipo de documento:
|
Article |
Editor:
|
|
Compartir:
|
|
Uri:
|
https://ddd.uab.cat/record/116004
|