A new class of room temperature multiferroic Bi 3 Fe 2 Mn 2 O 10+δ thin films

1. A new class of room temperature multiferroic Bi3Fe2Mn2O10+δ thin films Daniel C. Ralph, Cornell University, ECCS 0335765 A new class of room temperature multiferroic phase Bi3Fe2Mn2O10+δ has been fabricated by the intergrwoth of two partially miscible phases of BiFeO3 and BiMnO3. The new phase presents a unique Super-Cell (SC) structure with the bismuth bilayer sublattice structure in commensurate with the Fe-O-Mn sublattice. The SC heterostructures exhibit a room temperature ferrimagnetism of ~ 100 emu/cc and a remnant polarization Pr of ~ 6 µC/cm2, simultaneously. These results open a new avenue for exploring room temperature single-phase multiferroic thin films by controlling the phase mixing of two perovskite BiRO3 (R=Cr, Mn, Fe, Co, Ni) materials. Piezoelectric coefficient d33 vs bias voltage • Chen, H. Zhou, Z. Bi, Y. Zhu, Z. Luo, A. Bayraktaroglu, J. Phillips, E.-M. Choi,J. L. MacManus-Driscoll,S. J. Pennycook, J. Narayan,  Q. X. Jia, X. Zhang,and H. Wang, University of Michigan • Work performed in part at the Lurie Nanofabrication Facility The polarization-electric field (P-E) hysteresis loops