This title appears in the Scientific Report :
2008
Please use the identifier:
http://dx.doi.org/10.1103/PhysRevB.78.064427 in citations.
Please use the identifier: http://hdl.handle.net/2128/11064 in citations.
Impact of interface orientation on the magnetic coupling in highly ordered systems - A case study on Fe3O4/NiO
Impact of interface orientation on the magnetic coupling in highly ordered systems - A case study on Fe3O4/NiO
We investigated the influence of the interface orientation on the magnetic coupling for the (110), (001), and (111) interfaces of epitaxial NiO thin films on single-crystal Fe3O4. In our analysis, we combine magnetic x-ray spectroscopies with circularly and linearly polarized light, i.e., x-ray magn...
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Personal Name(s): | Krug, I. |
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Hillebrecht, F. U. / Gomonaj, H. / Haverkort, M. / Tanaka, A. / Tjeng, L.-H. / Fraile-Rodriguez, A. / Nolting, F. / Schneider, C. M. | |
Contributing Institute: |
Elektronische Eigenschaften; IFF-9 JARA-FIT; JARA-FIT |
Published in: | Physical Review B Physical review / B, 78 78 (2008 2008) 6 6, S. 064427 064427 |
Imprint: |
College Park, Md.
APS
2008
|
DOI: |
10.1103/PhysRevB.78.064427 |
Document Type: |
Journal Article |
Research Program: |
Grundlagen für zukünftige Informationstechnologien |
Series Title: |
Physical Review B
78 |
Subject (ZB): | |
Link: |
Get full text OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/11064 in citations.
We investigated the influence of the interface orientation on the magnetic coupling for the (110), (001), and (111) interfaces of epitaxial NiO thin films on single-crystal Fe3O4. In our analysis, we combine magnetic x-ray spectroscopies with circularly and linearly polarized light, i.e., x-ray magnetic circular and linear dichroism (XMCD and XMLD). A full treatment of the anisotropic XMLD in single-crystalline materials backed by theoretical support allows for a reliable vectorial magnetometry. Both the (110) and the (111) interfaces produce collinear coupling, which at first glance contradicts Koon's theory, while-at the (001) interface, a perpendicular (spin-flop) coupling between a ferrimagnet and an antiferromagnet is observed. Furthermore, we find a pronounced enhancement of the interfacial uncompensated magnetization for the (110) interface only, while for the two other interfaces this value is considerably lower. These apparent discrepancies are resolved in terms of a detailed consideration of exchange and magnetoelastic effects for the individual orientations. The results highlight the fundamental role of the crystalline interface orientation in magnetic coupling phenomena involving oxidic systems. |