Effective exchange coupling in permalloy-gadolinium films

✍ Scribed by Ranchal, R. ;Aroca, C. ;Sánchez, M. C. ;Sánchez, P. ;López, E.

• Publisher: John Wiley and Sons
• Year: 2006
• Tongue: English
• Weight: 250 KB
• Volume: 203
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/pssa.200566138

✦ Synopsis

Abstract

Py/Gd/Py trilayers (Py:Fe~20~Ni~80~) have been electrical and magnetically characterized as a function of the temperature. Results show a weak Py–Gd exchange coupling probably due to the Ni interdiffusion into the Gd layer. These results have been compared with magnetic measurements in Py/Gd double bilayers ([Py/Gd/Mo]~2~). An enhancement of the Py–Gd exchange coupling has been obtained in these samples where the Ni concentration in the Gd layer is almost null. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)