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- W4386497837 abstract "Abstract We study the structural, electronic, and magnetic properties of the SrCrO 3 /YCrO 3 superlattice and their dependence on epitaxial strain. We discover that the superlattice adopts A-type antiferromagnetic (A-AFM) ordering in contrast to its constituents (SrCrO 3 : C-AFM; YCrO 3 : G-AFM) and retains it under compressive strain while becoming ferromagnetic (5 μ B per formula unit) at +1% strain. The obtained ferroelectric polarization is significantly higher than that of the R 2 NiMnO 6 /La 2 NiMnO 6 (R = Ce to Er) series of superlattices [ Nat. Commun . 5, 4021 (2014)] due to a large difference between the antipolar displacements of the Sr and Y cations. The superlattice is a hybrid-improper multiferroic material with a spontaneous ferroelectric polarization (13.5 μC/cm 2 ) approaching that of bulk BaTiO 3 (19 μC/cm 2 ). The combination of ferromagnetism with ferroelectricity enables multistate memory applications. In addition, the charge-order-driven p -type semiconducting state of the ferromagnetic phase (despite the metallic nature of SrCrO 3 ) is a rare property and interesting for spintronics. Monte Carlo simulations demonstrate a magnetic critical temperature of 90 K for the A-AFM phase without strain and of 115 K for the ferromagnetic phase at +5% strain, for example." @default.
- W4386497837 created "2023-09-07" @default.
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- W4386497837 date "2023-09-07" @default.
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- W4386497837 title "Ferromagnetism and ferroelectricity in a superlattice of antiferromagnetic perovskite oxides without ferroelectric polarization" @default.
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- W4386497837 doi "https://doi.org/10.1038/s41524-023-01108-2" @default.
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