Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Domain walls and exchange-interaction in Permalloy/Gd films
Year:2008
Research Areas
  • Magnetic materials
Information
Abstract
In this work we study the exchange coupling in Permalloy(Py)/gadolinium (Gd) bilayers. The exchange-coupled Py/Gd system is very temperature dependent and moreover the magnetization process in the Py layer is mainly due to domain wall (DW) displacements which are strongly controlled by pinning effects. We propose that this pinning could be caused by magnetostatic and exchange interactions between Py DWs and the magnetostrictive Gd layer. These effects mask the antiferromagnetic coupling between layers and, depending on temperature and Py thicknesses, apparent ferromagnetic coupling occurs. The study has been performed in the 80¿300K temperature range for different Py layer thicknesses and different Py induced anisotropies.
International
Si
JCR
Si
Title
NEW JOURNAL OF PHYSICS
ISBN
1367-2630
Impact factor JCR
3,264
Impact info
Volume
10
10.1088/1367-2630/10/1/013013
Journal number
0
From page
013013
To page
013023
Month
ENERO
Ranking
Participants
  • Participante: et al (UCM)
  • Autor: Claudio Aroca Hernandez-Ros (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Grupo de dispositivos magnéticos del ISOM
  • Centro o Instituto I+D+i: Instituto Universitario de Sistemas Optoelectrónicos y Microtecnología
  • Departamento: Física Aplicada a las Tecnologías de la Información
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)