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Magnetoelectric properties of 500-nm Cr2O3 films

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journal contribution
posted on 30.03.2017, 08:15 by Pavel BorisovPavel Borisov, T. Ashida, T. Nozaki, M. Sahashi, David Lederman
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.

Funding

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.

History

School

  • Science

Department

  • Physics

Published in

Physical Review B - Condensed Matter and Materials Physics

Volume

93

Issue

17

Citation

BORISOV, P. ... et al., 2016. Magnetoelectric properties of 500-nm Cr2O3 films. Physical Review B, 93 (17), 7pp.

Publisher

© American Physical Society

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

13/04/2016

Publication date

2016

Notes

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

ISSN

1098-0121

eISSN

1550-235X

Language

en

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