Deterministic and robust room-temperature exchange coupling in monodomain multiferroic BiFeO3 heterostructures.

ABSTRACT: Exploiting multiferroic BiFeO3 thin films in spintronic devices requires deterministic and robust control of both internal magnetoelectric coupling in BiFeO3, as well as exchange coupling of its antiferromagnetic order to a ferromagnetic overlayer. Previous reports utilized approaches based on multi-step ferroelectric switching with multiple ferroelectric domains. Because domain walls can be responsible for fatigue, contain localized charges intrinsically or via defects, and present problems for device reproducibility and scaling, an alternative approach using a monodomain magnetoelectric state with single-step switching is desirable. Here we demonstrate room temperature, deterministic and robust, exchange coupling between monodomain BiFeO3 films and Co overlayer that is intrinsic (i.e., n

SUBMITTER: Saenrang W 

PROVIDER: S-EPMC5691063 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature