Borisov_PRB_Cr2O3 revised final.pdf (1017.35 kB)
Magnetoelectric properties of 500-nm Cr2O3 films
journal contribution
posted on 2017-03-30, 08:15 authored by Pavel BorisovPavel Borisov, T. Ashida, T. Nozaki, M. Sahashi, David LedermanThe 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 PhysicsVolume
93Issue
17Citation
BORISOV, P. ... et al., 2016. Magnetoelectric properties of 500-nm Cr2O3 films. Physical Review B, 93 (17), 7pp.Publisher
© American Physical SocietyVersion
- 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
2016-04-13Publication date
2016Notes
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.93.174415ISSN
1098-0121eISSN
1550-235XPublisher version
Language
- en