Two-Dimensional Perovskite Chiral Ferromagnets

Magnetic molecular materials with a chiral configuration are attractive candidates for sensing, information storage, and spintronics. Herein, we report the first example of two-dimensional hybrid perovskite chiral ferromagnets, (R-MPEA)₂CuCl₄ and (S-MPEA)₂CuCl₄. These two compounds exhibit strong oppositely signed circular dichroism signals and clear ferromagnetic behaviors. Magnetic measurements revealed high saturation magnetization up to 12.5 emu g^–1. The coexistence of strong chirality and ferromagnetism enabled successful study on their magneto-chiral dichroism spectra. These findings demonstrate a new materials platform for future magneto-optical and spintronic applications, providing insights to the structure–property correlation of chiral ferromagnetic perovskite.