Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 134, Issue 8, Pages 3737-3747Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja208395z
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Funding
- UK EPSRC [EP/H000925]
- ERG [227987]
- EPSRC [EP/F067496/1, EP/H000925/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/H000925/1, EP/F067496/1] Funding Source: researchfish
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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 ScFeO3 (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 ScFeO3 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 BiFeO3.
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