Single-crystalline Fe/Cr/Fe/MgO/Fe magnetotunnel junctions grown on GaAs(001)
Abstract:
Fe/MgO/Fe/Cr/Fe tunneling structures were epitaxially grown directly on GaAs(001) without buffer layer. Interdiffusion in the Fe/GaAs interface was investigated using conversion electron Mossbauer spectroscopy. An independent magnetization switching in the Fe electrodes was achieved by pinning the magnetization of the Fe-top electrode by antiferromagnetic coupling across a Cr spacer to another Fe film. For transport measurements, optical lithography and ion etching were applied to reduce the junction area. A tunneling magnetoresistance of 10%-12% at room temperature was found. (C) 2006 American Institute of Physics.
| Zugehörige Institution(en) am KIT | Physikalisches Institut (PHI) |
| Publikationstyp | Zeitschriftenaufsatz |
| Publikationsjahr | 2006 |
| Sprache | Englisch |
| Identifikator | ISSN: 0021-8979 KITopen-ID: 1000053840 |
| Erschienen in | Journal of Applied Physics |
| Verlag | American Institute of Physics (AIP) |
| Band | 99 |
| Heft | 8 |
| Seiten | Art.Nr. 08C908 |
| Nachgewiesen in | Web of Science Scopus Dimensions |