EB induced by biquadratic interface exchange coupling

Flipping magnetization induced by noncollinear ferromagnetic-antiferromagnetic exchange coupling.
B. Y. Wang, C. H. Chuang, S. S. Wong, J. J. Chiou, W. C. Lin, Y. L. Chan, D. H. Wei, and Minn-Tsong Lin
Phys. Rev. B 85, 094412 (2012)

The Fe and Mn domain images as functions of tMn, taken at 105 K, at the region where the Fe film reveals the flipping magnetization (indicated by white arrows). The Mn layer yields nonvanishing IA at integer layer thickness and
approaches to zero value at half-integer layer thickness. A very small IA signal for the Mn layer could be attributed to a nearly orthogonal included angle between the photohelicity and in-plane magnetization.