  The magnetic and transport properties of BiFeO3/La2NiMnO6 (BFO/LNMO)
composite have been investigated both experimentally and theoretically. Unlike
the normal rhombohedral (R3c) phase, BFO in the composites is crystallized in
the triclinic phase (P1). Interestingly, the composites demonstrate a
significant enhancement in the magnetization, magnetoelectric coupling and show
higher resistivity than that of the regular BFO (R3c). As LNMO has its Curie
temperature at 280 K, the room temperature and above room temperature magnetic
contribution in the composites is expected to be from the triclinic BFO phase.
Experimentally observed enhancement in magnetization is validated using
classical Monte Carlo simulation and density functional theory (DFT)
calculations. The calculations reveal higher magnetic moments in triclinic BFO
as compared to the rhombohedral BFO. Overall, this study reveals triclinic BFO
as the promising room temperature multiferroic phase which is helpful to
optimize the multiferroicity of BFO and achieve wider applications in future.
