| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1490368 | Materials Research Bulletin | 2012 | 5 Pages |
‘Multiferroic’ materials possessing simultaneously magnetic and ferroelectric orders are scarce and most of them order at low temperatures. So far, bismuth ferrite, BiFeO3, is the only reliable room-temperature multiferroic: it is ferroelectric and antiferromagnetic. The absence of a net magnetisation in this compound is a problem when one wants to use the magneto-electric effect to address magnetic information with an electric field for potential applications in spintronic devices. We show here that β-NaFeO2 is also a multiferroic material at room-temperature but with the most interesting extra property of showing weak ferromagnetism. This makes it a potentially very promising material for applications and a model compound for fundamental studies of the interaction between ferroelectricity and magnetism.
Graphical abstractPolarisation electric field loops and magnetisation curve versus applied magnetic fields showing that β-NaFeO2 is a ferroelectric and weak ferromagnetic compound at room temperature.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► β-NaFeO2 is a new multiferroic material at room-temperature. ► β-NaFeO2 is ferroelectric and weak ferromagnetic. ► This makes it a potentially very promising material for applications. ► And a model for studies of the interaction between ferroelectricity and magnetism.
