Long-range antiferromagnetic order of formally nonmagneticEu3+Van Vleck ions observed in multiferroicEu1−xYxMnO3

A. Skaugen, E. Schierle, G. van der Laan, D. K. Shukla, H. C. Walker, E. Weschke, J. Strempfer
2015 Physical Review B  
We report on resonant magnetic x-ray scattering and absorption spectroscopy studies of exchange-coupled antiferromagnetic ordering of Eu^3+ magnetic moments in multiferroic Eu_1-xY_xMnO_3 in the absence of an external magnetic field. The observed resonant spectrum is characteristic of a magnetically ordered ^7F_1 state that mirrors the Mn magnetic ordering, due to exchange coupling between the Eu 4f and Mn 3d spins. This is the first observation of long range magnetic order generated by
more » ... coupling of magnetic moments of formally non-magnetic Van Vleck ions, which is a step further towards the realization of exotic phases induced by exchange coupling in systems entirely composed of non-magnetic ions.
doi:10.1103/physrevb.91.180409 fatcat:2bewyf2zofd3nggbhjsxogpzoa