English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

In insulating materials with ordered magnetic spiral phases, ferroelectricitycan emerge due to the breaking of inversion symmetry. This property is of bothfundamental and practical interest, in particular with a view to exploiting itin low-power electronic devices. Advances towards technological applicationshave been hindered, however, by the relatively low ordering temperatures$T_\mathrm{spiral}$ of most magnetic spiral phases, which rarely exceed 100 K.We have recently established that the ordering temperature of a magnetic spiralcan be increased up to 310 K by the introduction of chemical disorder. Here weexplore the design space opened up by this novel mechanism by combining it witha targeted lattice control of some magnetic interactions. In Cu-Fe layeredperovskites we obtain $T_\mathrm{spiral}$ values close to 400 K, comfortablyfar from room temperature and almost 100 K higher than using chemical disorderalone. Moreover, we reveal a linear, universal relationship between thespiral's wave vector and the onset temperature of the spiral phase. This linearlaw ends at a paramagnetic-collinear-spiral triple point, which defines thehighest spiral ordering temperature that can be achieved in this class ofmaterials. Based on these findings, we propose a general set of rules fordesigning magnetic spirals in layered perovskites using external pressure,chemical substitutions and/or epitaxial strain, which should guide futureefforts to engineer magnetic spiral phases with ordering temperatures suitablefor technological applications.

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