Design of magnetic spirals in layered perovskites: Extending the stability range far beyond room temperature.

ABSTRACT: In insulating materials with ordered magnetic spiral phases, ferroelectricity can emerge owing to the breaking of inversion symmetry. This property is of both fundamental and practical interest, particularly with a view to exploiting it in low-power electronic devices. Advances toward technological applications have been hindered, however, by the relatively low ordering temperatures T _spiral of most magnetic spiral phases, which rarely exceed 100 K. We have recently established that the ordering temperature of a magnetic spiral can be increased up to 310 K by the introduction of chemical disorder. Here, we explore the design space opened up by this novel mechanism by combining it with a targeted lattice control of some magnetic interactions. In Cu-Fe layered perovskites,

SUBMITTER: Shang T 

PROVIDER: S-EPMC6203228 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature