Exchange coupling and macroscopic domain structure in a wedged permalloy/FeMn bilayer
- Author(s): Zhou, S;
- Liu, K;
- Chien, C
- et al.
Published Web Locationhttps://doi.org/10.1103/PhysRevB.58.R14717
Local Kerr effect and magnetometry measurements reveal that switching in exchange-coupled wedged-permalloy/FeMn bilayers involves only two macroscopic domains, extending across the entire sample, separated by a 180° domain wall, which moves along the wedge direction. The squareness of the hysteresis loop of such exchange-coupled layers depends on the thickness variation of the sample under measurement. © 1998 The American Physical Society.