%0 Journal Article %A D Meier %A H Ryll %A K Kiefer %A B Klemke %A J.-U Hoffmann %A Ramamoorthy Ramesh %A M Fiebig %B Physical Review B - Condensed Matter and Materials Physics %D 2012 %G eng %R 10.1103/PhysRevB.86.184415 %T Mutual induction of magnetic 3d and 4f order in multiferroic hexagonal ErMnO 3 %V 86