Characteristics of domain wall motion in CoFe films for GHz frequency application

✍ Scribed by Watanabe, T. ;Munakata, M. ;Ohkoshi, M.

• Publisher: John Wiley and Sons
• Year: 2007
• Tongue: English
• Weight: 209 KB
• Volume: 204
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/pssa.200777251

✦ Synopsis

Abstract

Dynamic magnetization process is studied in CoFe films for high frequency application by using a time‐resolved imaging technique. The domain wall resonance has been found at 130 kHz in a slit‐patterned Co~35~Fe~65~ film with high saturation magnetization. The domain wall mobility of 20 m/sOe was observed at the resonant frequency. The effective wall mass, the viscous damping constant, and the restoring force constant were evaluated in the Co~35~Fe~65~ film. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)