Abstract
We report the magnetic field dependence of the threshold electric field Eth for the magnetoelectric switching of the perpendicular exchange bias in Pt/Co/Au/Cr2O3/Pt stacked films using a reversible isothermal electric tuning approach. The Eth values for the positive-to-negative and negative-to-positive switching are different because of the unidirectional nature of the interfacial exchange coupling. The Eth values are inversely proportional to the magnetic-field strength, and the quantitative analysis of this relationship suggests that the switching is driven by the nucleation and growth of the antiferromagnetic domain. We also find that the magnetic-field dependence of Eth exhibits an offset electric field that might be related to the uncompensated antiferromagnetic moments located mainly at the interface.
Original language | English |
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Article number | 073905 |
Journal | Journal of Applied Physics |
Volume | 122 |
Issue number | 7 |
DOIs | |
Publication status | Published - 2017 Aug 21 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy(all)