Tunable interplay between exchange coupling and uniaxial magnetic anisotropy in epitaxial CoO/Au/Fe trilayers
Abstract We show that the interaction between ferromagnetic Fe(110) and antiferromagnetic CoO(111) sublayers can be mediated and precisely tuned by a nonmagnetic Au spacer. Our results prove that the thickness of the Fe and Au layers can be chosen to modify the effective anisotropy of the Fe layer a...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-07-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-38098-6 |
| _version_ | 1797452612312760320 |
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| author | H. Nayyef E. Świerkosz W. Janus A. Klimeczek M. Szpytma M. Zając P. Dróżdż A. Kozioł-Rachwał T. Ślęzak M. Ślęzak |
| author_facet | H. Nayyef E. Świerkosz W. Janus A. Klimeczek M. Szpytma M. Zając P. Dróżdż A. Kozioł-Rachwał T. Ślęzak M. Ślęzak |
| author_sort | H. Nayyef |
| collection | DOAJ |
| description | Abstract We show that the interaction between ferromagnetic Fe(110) and antiferromagnetic CoO(111) sublayers can be mediated and precisely tuned by a nonmagnetic Au spacer. Our results prove that the thickness of the Fe and Au layers can be chosen to modify the effective anisotropy of the Fe layer and the strength of the exchange bias interaction between Fe and CoO sublayers. Well-defined and tailorable magnetic anisotropy of the ferromagnet above Néel temperature of the antiferromagnet is a determining factor that governs exchange bias and interfacial CoO spins orientation at low temperatures. In particular, depending on the room temperature magnetic state of Fe, the low-temperature exchange bias in a zero-field cooled system can be turned “off” or “on”. The other way around, we show that exchange bias can be the dominating magnetic anisotropy source for the ferromagnet and it is feasible to induce a 90-degree rotation of the easy axis as compared to the initial, exchange bias-free easy axis orientation. |
| first_indexed | 2024-03-09T15:11:09Z |
| format | Article |
| id | doaj.art-c7f5f392260b432b840e23004bc5f261 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-03-09T15:11:09Z |
| publishDate | 2023-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-c7f5f392260b432b840e23004bc5f2612023-11-26T13:24:21ZengNature PortfolioScientific Reports2045-23222023-07-011311810.1038/s41598-023-38098-6Tunable interplay between exchange coupling and uniaxial magnetic anisotropy in epitaxial CoO/Au/Fe trilayersH. Nayyef0E. Świerkosz1W. Janus2A. Klimeczek3M. Szpytma4M. Zając5P. Dróżdż6A. Kozioł-Rachwał7T. Ślęzak8M. Ślęzak9Faculty of Physics and Applied Computer Science, AGH University of KrakowFaculty of Physics and Applied Computer Science, AGH University of KrakowFaculty of Physics and Applied Computer Science, AGH University of KrakowFaculty of Physics and Applied Computer Science, AGH University of KrakowFaculty of Physics and Applied Computer Science, AGH University of KrakowNational Synchrotron Radiation Centre SOLARIS, Jagiellonian UniversityInstitute of Physics, Maria Curie-Sklodowska UniversityFaculty of Physics and Applied Computer Science, AGH University of KrakowFaculty of Physics and Applied Computer Science, AGH University of KrakowFaculty of Physics and Applied Computer Science, AGH University of KrakowAbstract We show that the interaction between ferromagnetic Fe(110) and antiferromagnetic CoO(111) sublayers can be mediated and precisely tuned by a nonmagnetic Au spacer. Our results prove that the thickness of the Fe and Au layers can be chosen to modify the effective anisotropy of the Fe layer and the strength of the exchange bias interaction between Fe and CoO sublayers. Well-defined and tailorable magnetic anisotropy of the ferromagnet above Néel temperature of the antiferromagnet is a determining factor that governs exchange bias and interfacial CoO spins orientation at low temperatures. In particular, depending on the room temperature magnetic state of Fe, the low-temperature exchange bias in a zero-field cooled system can be turned “off” or “on”. The other way around, we show that exchange bias can be the dominating magnetic anisotropy source for the ferromagnet and it is feasible to induce a 90-degree rotation of the easy axis as compared to the initial, exchange bias-free easy axis orientation.https://doi.org/10.1038/s41598-023-38098-6 |
| spellingShingle | H. Nayyef E. Świerkosz W. Janus A. Klimeczek M. Szpytma M. Zając P. Dróżdż A. Kozioł-Rachwał T. Ślęzak M. Ślęzak Tunable interplay between exchange coupling and uniaxial magnetic anisotropy in epitaxial CoO/Au/Fe trilayers Scientific Reports |
| title | Tunable interplay between exchange coupling and uniaxial magnetic anisotropy in epitaxial CoO/Au/Fe trilayers |
| title_full | Tunable interplay between exchange coupling and uniaxial magnetic anisotropy in epitaxial CoO/Au/Fe trilayers |
| title_fullStr | Tunable interplay between exchange coupling and uniaxial magnetic anisotropy in epitaxial CoO/Au/Fe trilayers |
| title_full_unstemmed | Tunable interplay between exchange coupling and uniaxial magnetic anisotropy in epitaxial CoO/Au/Fe trilayers |
| title_short | Tunable interplay between exchange coupling and uniaxial magnetic anisotropy in epitaxial CoO/Au/Fe trilayers |
| title_sort | tunable interplay between exchange coupling and uniaxial magnetic anisotropy in epitaxial coo au fe trilayers |
| url | https://doi.org/10.1038/s41598-023-38098-6 |
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