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Title
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A polar corundum oxide displaying weak ferromagnetism at room temperature
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Author
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Abstract
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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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Language
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English
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Source (journal)
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Journal of the American Chemical Society. - Washington, D.C., 1879, currens
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Publication
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Washington, D.C.
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American Chemical Society
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2012
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ISSN
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0002-7863
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DOI
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10.1021/JA208395Z
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Volume/pages
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134
:8
(2012)
, p. 3737-3747
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ISI
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000301161600027
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Full text (Publisher's DOI)
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