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A Polar Corundum Oxide Displaying Weak Ferromagnetism at Room Temperature
Authors:
Man-rong
Li
(Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K.)
,
Umut
Adem
(Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K.)
,
Sean R. C.
Mcmitchell
(Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K.)
,
Zhongling
Xu
(Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K.)
,
Chris I.
Thomas
(Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K.)
,
John
Warren
(University of Liverpool; Daresbury)
,
Duong V.
Giap
(Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K.)
,
Hongjun
Niu
(Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K.)
,
Xinming
Wan
(Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K.)
,
Robert G.
Palgrave
(Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K.)
,
Florian
Schiffmann
(Department of Chemistry, University College London, WC1H 0AJ, U.K.)
,
Furio
Cora
(Department of Chemistry, University College London, WC1H 0AJ, U.K.)
,
Ben
Slater
(Department of Chemistry, University College London, WC1H 0AJ, U.K.)
,
Tim L.
Burnett
(National Physical Laboratory, Hampton Road, Teddington TW11 0LW, U.K.)
,
Markys G.
Cain
(National Physical Laboratory, Hampton Road, Teddington TW11 0LW, U.K.)
,
Artem M.
Abakumov
(EMAT University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium)
,
Gustaaf
Van Tendeloo
(EMAT University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium)
,
Michael F.
Thomas
(Department of Physics, University of Liverpool, L69 7ZE, U.K.)
,
Matthew J.
Rosseinsky
(Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K.)
,
John B.
Claridge
(Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K.)
Co-authored by industrial partner:
No
Type:
Journal Paper
Journal:
Journal Of The American Chemical Society
, VOL 134 (8)
, PAGES 3737-3747
State:
Published (Approved)
Published:
February 2012

Abstract: 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.
Subject Areas:
Chemistry
Instruments:
I11-High Resolution Powder Diffraction