Numerical simulation of magnetization process in epitaxial Co2MnSi/Cr/Co2MnSi trilayers with oscillatory interlayer coupling

Numerical simulation is carried out to investigate the magnetization process of epitaxial Co2MnSi/Cr/Co2MnSi trilayers with oscillatory interlayer exchange coupling. A series of the magnetization curves is successfully fitted by using a very simple model, in which the absent 180 degrees coupling is assumed while 90 degrees coupling and the lowest order cubic anisotropy are considered. The 90 degrees coupling energy and the anisotropy constant can be uniquely determined, and it is revealed that the strength of 90 degrees coupling decreases exponentially with the spacer layer thickness. (c) 2007 American Institute of Physics.