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 this contribution to the special issue on multiferroics we focus onmultiferroicity driven by different forms of charge ordering. We will presentthe generic mechanisms by which charge ordering can induce ferroelectricity inmagnetic systems. There is a number of specific classes of materials for whichthis is relevant. We will discuss in some detail $(i)$ perovskite manganites ofthe type (PrCa)MnO$_3$, $(ii)$ the complex and interesting situation inmagnetite Fe$_3$O$_4$, $(iii)$ strongly ferroelectric frustrated LuFe$_2$O$_4$,$(iv)$ an example of a quasi one-dimensional organic system. All these are"type-I" multiferroics, in which ferroelectricity and magnetism have differentorigin and occur at different temperatures. In the second part of this articlewe discuss "type-II" multiferroics, in which ferroelectricity is completely{\it due to} magnetism, but with charge ordering playing important role, suchas $(v)$ the newly-discovered multiferroic Ca$_3$CoMnO$_6$, $(vi)$ possibleferroelectricity in rare earth perovskite nickelates of the type RNiO$_3$,$(vii)$ multiferroic properties of manganites of the type RMn$_2$O$_5$,$(viii)$ of perovskite manganites with magnetic E-type ordering and $(ix)$ ofbilayer manganites.

Multiferroicity due to charge ordering