title: A polar corundum oxide displaying weak ferromagnetism at room temperature.
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 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).
authors.affiliation: Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, UK.
authors.forename: Man-Rong
authors.initials: MR
authors.lastname: Li
authors.forename: Umut
authors.initials: U
authors.lastname: Adem
authors.forename: Sean R C
authors.initials: SR
authors.lastname: McMitchell
authors.forename: Zhongling
authors.initials: Z
authors.lastname: Xu
authors.forename: Chris I
authors.initials: CI
authors.lastname: Thomas
authors.forename: John E
authors.initials: JE
authors.lastname: Warren
authors.forename: Duong V
authors.initials: DV
authors.lastname: Giap
authors.forename: Hongjun
authors.initials: H
authors.lastname: Niu
authors.forename: Xinming
authors.initials: X
authors.lastname: Wan
authors.forename: Robert G
authors.initials: RG
authors.lastname: Palgrave
authors.forename: Florian
authors.initials: F
authors.lastname: Schiffmann
authors.forename: Furio
authors.initials: F
authors.lastname: Cora
authors.forename: Ben
authors.initials: B
authors.lastname: Slater
authors.forename: Tim L
authors.initials: TL
authors.lastname: Burnett
authors.forename: Markys G
authors.initials: MG
authors.lastname: Cain
authors.forename: Artem M
authors.initials: AM
authors.lastname: Abakumov
authors.forename: Gustaaf
authors.initials: G
authors.lastname: van Tendeloo
authors.forename: Michael F
authors.initials: MF
authors.lastname: Thomas
authors.forename: Matthew J
authors.initials: MJ
authors.lastname: Rosseinsky
authors.forename: John B
authors.initials: JB
authors.lastname: Claridge
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry*; D005290:Ferric Compounds / Q000737:chemistry; D060328:Magnetic Phenomena; D008567:Membranes, Artificial; D010087:Oxides / Q000737:chemistry*; D012538:Scandium / Q000737:chemistry; D013696:Temperature
chemical_list: D005290:Ferric Compounds; D008567:Membranes, Artificial; D010087:Oxides; C000499:ferric oxide; D000537:Aluminum Oxide; D012538:Scandium