Ferromagnetism in LaFeO₃/LaNiO₃ superlattices with high Curie temperature.

ABSTRACT: Interfacing complex oxides in atomically engineered layered structures can give rise to a wealth of exceptional electronic and magnetic properties that surpass those of the individual building blocks. Herein, we demonstrate a ferromagnetic spin order with a high Curie temperature of 608 K in superlattices consisting of otherwise paramagnetic perovskite LaNiO₃ (LNO) and antiferromagnetic LaFeO₃ (LFO). The ferromagnetism likely results from the covalent exchange due to interfacial charge transfer from Fe to Ni cations. By deliberately controlling the thickness of the LNO sublayers thus the amount of charge transfer, a robust ferromagnetism of 4 u_B is realized for a stacking periodicity consisting of one single unit cell of both LNO and LFO, an emergent double

SUBMITTER: Zhou T 

PROVIDER: S-EPMC12006374 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature