van Tendeloo, G;
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A polar corundum oxide displaying weak ferromagnetism at room temperature.
J Am Chem Soc
3737 - 3747.
Combining long-range magnetic order with polarity in the same structure is a prerequisite for the design of (magnetoelectric) multiferroic materials. There are now several demonstrated strategies to achieve this goal, but retaining magnetic order above room temperature remains a difficult target. Iron oxides in the +3 oxidation state have high magnetic ordering temperatures due to the size of the coupled moments. Here we prepare and characterize ScFeO(3) (SFO), which under pressure and in strain-stabilized thin films adopts a polar variant of the corundum structure, one of the archetypal binary oxide structures. Polar corundum ScFeO(3) has a weak ferromagnetic ground state below 356 K-this is in contrast to the purely antiferromagnetic ground state adopted by the well-studied ferroelectric BiFeO(3).
|Title:||A polar corundum oxide displaying weak ferromagnetism at room temperature.|
|Keywords:||Aluminum Oxide, Ferric Compounds, Magnetic Phenomena, Membranes, Artificial, Oxides, Scandium, Temperature|
|UCL classification:||UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Chemistry|
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