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Title: Magnetoelectric properties of 500-nm Cr2O3 films
Authors: Borisov, Pavel
Ashida, T.
Nozaki, T.
Sahashi, M.
Lederman, David
Issue Date: 2016
Publisher: © American Physical Society
Citation: BORISOV, P. ... et al., 2016. Magnetoelectric properties of 500-nm Cr2O3 films. Physical Review B, 93 (17), 7pp.
Abstract: The linear magnetoelectric effect was measured in 500-nm Cr2O3 films grown by radio frequency sputtering on Al2O3 substrates between top and bottom thin film Pt electrodes. Magnetoelectric susceptibility was measured directly by applying an alternating current (ac) electric field and measuring the induced ac magnetic moment using superconducting quantum interference device magnetometry. A linear dependence of the induced ac magnetic moment on the ac electric field amplitude was found. The temperature dependence of the magnetoelectric susceptibility agreed qualitatively and quantitatively with prior measurements of bulk single crystals, but the characteristic temperatures of the film were lower than those of single crystals. It was also possible to reverse the sign of the magnetoelectric susceptibility by reversing the sign of the magnetic field applied during cooling through the Néel temperature. A competition between total magnetoelectric and Zeeman energies is proposed to explain the difference between film and bulk Cr2O3 regarding the cooling field dependence of the magnetoelectric effect.
Description: This article was published in the journal Physical Review B [© American Physical Society] and the definitive version is available at: https://doi.org/10.1103/PhysRevB.93.174415
Sponsor: This paper was supported in part by the West Virginia Higher Education Policy Commission, Research Challenge Grant No. HEPC.dsr.12.29, West Virginia University (WVU) Shared Research Facilities, and Council for Science, Technology and Innovation ImPACT program through government of Japan.
Version: Accepted for publication
DOI: 10.1103/PhysRevB.93.174415
URI: https://dspace.lboro.ac.uk/2134/24571
Publisher Link: http://dx.doi.org/10.1103/PhysRevB.93.174415
ISSN: 1098-0121
Appears in Collections:Published Articles (Physics)

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