Magnetoelectric switching of perpendicular exchange bias in Pt/Co/α-Cr₂O₃/Pt stacked films

Toyoki, Kentaro; Shiratsuchi, Yu; Kobane, Atsushi et al.

Applied Physics Letters, 2015, 106(16), 162404

Number of Access:785（2025-10-05 08:02 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/89977

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Title
Magnetoelectric switching of perpendicular exchange bias in Pt/Co/α-Cr₂O₃/Pt stacked films
Creator
NRID
1000090780007 1000090780007
ORCID
0000-0003-2887-0326 0000-0003-2887-0326
researchmap permalink
k_toyoki k_toyoki
Scopus Author ID
55970429100 55970429100
CreatorName
Toyoki, Kentaro
NRID
1000070379121 1000070379121
ORCID
0000-0002-8938-4869 0000-0002-8938-4869
researchmap permalink
read0090304 read0090304
Scopus Author ID
6602197167 6602197167
CreatorName
Shiratsuchi, Yu
CreatorName
Kobane, Atsushi
NRID
1000070600542 1000070600542
CreatorName
Mitsumata, Chiharu
NRID
1000010596464 1000010596464
CreatorName
Kotani, Yoshinori
NRID
1000070311355 1000070311355
CreatorName
Nakamura, Tetsuya
NRID
1000060314374 1000060314374
researchmap permalink
read0068619 read0068619
Scopus Author ID
7005234924 7005234924
CreatorName
Nakatani, Ryoichi
Description
Kentaro Toyoki, Yu Shiratsuchi, Atsushi Kobane, Chiharu Mitsumata, Yoshinori Kotani, Tetsuya Nakamura, and Ryoichi Nakatani, Appl. Phys. Lett. 106, 162404 (2015); https://doi.org/10.1063/1.4918940.
Abstract
We report the realization of magnetoelectric switching of the perpendicular exchange bias in Pt/Co/α-Cr₂O₃/Pt stacked films. The perpendicular exchange bias was switched isothermally by the simultaneous application of magnetic and electric fields. The threshold electric field required to switch the perpendicular exchange bias was found to be inversely proportional to the magnetic field, which confirmed the magnetoelectric mechanism of the process. The observed temperature dependence of the threshold electric field suggested that the energy barrier of the antiferromagnetic spin reversal was significantly lower than that assuming the coherent rotation. Pulse voltage measurements indicated that the antiferromagnetic domain propagation dominates the switching process. These results suggest an analogy of the electric-field-induced magnetization with a simple ferromagnet.
Publisher
American Institute of Physics
Source Title
Applied Physics Letters
Volume (Issue)
106(16)
Page
162404
Date of Issued
2015-04-22
Language
English
Handle URL
https://hdl.handle.net/11094/89977
PISSN
00036951
NCID
AA00543431
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1063/1.4918940
Access Rights
open access
CopyRight
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Kentaro Toyoki, Yu Shiratsuchi, Atsushi Kobane, Chiharu Mitsumata, Yoshinori Kotani, Tetsuya Nakamura, and Ryoichi Nakatani, Appl. Phys. Lett. 106, 162404 (2015) and may be found at https://doi.org/10.1063/1.4918940.
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Version of Record
Category
学術雑誌論文 Journal Article