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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Shiratsuchi, Y. Fujita, T. Noutomi, H. Oikawa, H. Nakatani, R. |
| Copyright Year | 1965 |
| Abstract | We investigated the control of the perpendicular exchange bias (PEB) in Pt/Co/α-Cr2O3 (0001) thin films that exhibit a unique temperature dependence of the PEB. Previously, we demonstrated that the onset of the PEB is explained by the competition between the interface coupling energy and the magnetic anisotropy energy in the α-Cr2O3 layer. Based on this finding, in this study, we investigated the influence of a Pt spacer layer at the Co/α-Cr2O3 interface to control the interface exchange coupling. By inserting a Pt spacer layer, the unidirectional magnetic anisotropy energy JK was reduced because of the weakened exchange coupling between Co and α-Cr2O3. The weakened direct exchange coupling caused an increase in the onset temperature of JK, resulting in a reduction in the α-Cr2O3 layer thickness necessary to maintain the PEB up to the Néel temperature. In addition, the change in the interface exchange coupling mechanism between Co and α-Cr2O3 is discussed with respect to the temperature dependence of JK. |
| Sponsorship | IEEE Magnetics Society |
| Starting Page | 3909 |
| Ending Page | 3912 |
| Page Count | 4 |
| File Size | 700916 |
| File Format | |
| ISSN | 00189464 |
| Volume Number | 47 |
| Issue Number | 10 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2011-10-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Couplings Temperature dependence Perpendicular magnetic anisotropy Temperature measurement Substrates Magnetization $\alpha$-Cr $_{2}$O $_{3}$ Antiferromagnetic material epitaxial growth interface phenomena perpendicular exchange bias (PEB) |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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