Strong intrinsic multiferroism and magnetoelectric coupling in (1– x )BiFeO 3 –( x )BaTiO 3 films - Tae Yeon Kim; Jesse Schimpf; Atanu Paul; Michael Xu; Atanu Samanta; Sajid Husain; Peter Meisenheimer; Isaac Harris; Peter Finkel; Thomas Mion; Margo Staruch; Anthony J. Ruffino; et al. (Proceedings of the National Academy of Sciences, 2026)