Layer selective determination of magnetization vector configurations in an epitaxial double spin valve structure: Si(001)/Cu/Co/Cu/FeNi/Cu/Co/Cu
The magnetization vector configurations in an epitaxial Si(001)/Cu/Co/Cu/Fe 20Ni 80/Cu/Co/Cu double spin valve structure have been investigated at room temperature using polarized neutron reflectivity measurements. The layer-averaged magnetic moment pe...
| Main Authors: | , , , , , |
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| Format: | Journal article |
| Language: | English |
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2000
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| _version_ | 1797054192304521216 |
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| author | Choi, B Samad, A Vaz, C Bland, J Langridge, S Penfold, J |
| author_facet | Choi, B Samad, A Vaz, C Bland, J Langridge, S Penfold, J |
| author_sort | Choi, B |
| collection | OXFORD |
| description | The magnetization vector configurations in an epitaxial Si(001)/Cu/Co/Cu/Fe 20Ni 80/Cu/Co/Cu double spin valve structure have been investigated at room temperature using polarized neutron reflectivity measurements. The layer-averaged magnetic moment per FeNi atom was found to be 0.99±0.06 μ B at saturation, while the top (bottom) Co layer moment was 1.69±0.09 μ B (1.67 ±0.08 μ B), which are identical to the bulk values within experimental error. Furthermore, the Co magnetization vectors are found to lie in-plane but canted with respect to the applied field direction for an applied field strength smaller than the coercive fields (∼80 and 130 Oe) of the Co layers. This result indicates that a complete antiparallel alignment of the layer magnetizations is not reached causing a corresponding reduction in the giant magnetoresistance (GMR). These observations emphasize the importance of the delailed spin configuration in determining the GMR amplitude at low fields. © 2000 American Institute of Physics. |
| first_indexed | 2024-03-06T18:53:45Z |
| format | Journal article |
| id | oxford-uuid:11200610-da2e-45b2-9ed0-e0939afe44d2 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T18:53:45Z |
| publishDate | 2000 |
| record_format | dspace |
| spelling | oxford-uuid:11200610-da2e-45b2-9ed0-e0939afe44d22022-03-26T10:00:25ZLayer selective determination of magnetization vector configurations in an epitaxial double spin valve structure: Si(001)/Cu/Co/Cu/FeNi/Cu/Co/CuJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:11200610-da2e-45b2-9ed0-e0939afe44d2EnglishSymplectic Elements at Oxford2000Choi, BSamad, AVaz, CBland, JLangridge, SPenfold, JThe magnetization vector configurations in an epitaxial Si(001)/Cu/Co/Cu/Fe 20Ni 80/Cu/Co/Cu double spin valve structure have been investigated at room temperature using polarized neutron reflectivity measurements. The layer-averaged magnetic moment per FeNi atom was found to be 0.99±0.06 μ B at saturation, while the top (bottom) Co layer moment was 1.69±0.09 μ B (1.67 ±0.08 μ B), which are identical to the bulk values within experimental error. Furthermore, the Co magnetization vectors are found to lie in-plane but canted with respect to the applied field direction for an applied field strength smaller than the coercive fields (∼80 and 130 Oe) of the Co layers. This result indicates that a complete antiparallel alignment of the layer magnetizations is not reached causing a corresponding reduction in the giant magnetoresistance (GMR). These observations emphasize the importance of the delailed spin configuration in determining the GMR amplitude at low fields. © 2000 American Institute of Physics. |
| spellingShingle | Choi, B Samad, A Vaz, C Bland, J Langridge, S Penfold, J Layer selective determination of magnetization vector configurations in an epitaxial double spin valve structure: Si(001)/Cu/Co/Cu/FeNi/Cu/Co/Cu |
| title | Layer selective determination of magnetization vector configurations in an epitaxial double spin valve structure: Si(001)/Cu/Co/Cu/FeNi/Cu/Co/Cu |
| title_full | Layer selective determination of magnetization vector configurations in an epitaxial double spin valve structure: Si(001)/Cu/Co/Cu/FeNi/Cu/Co/Cu |
| title_fullStr | Layer selective determination of magnetization vector configurations in an epitaxial double spin valve structure: Si(001)/Cu/Co/Cu/FeNi/Cu/Co/Cu |
| title_full_unstemmed | Layer selective determination of magnetization vector configurations in an epitaxial double spin valve structure: Si(001)/Cu/Co/Cu/FeNi/Cu/Co/Cu |
| title_short | Layer selective determination of magnetization vector configurations in an epitaxial double spin valve structure: Si(001)/Cu/Co/Cu/FeNi/Cu/Co/Cu |
| title_sort | layer selective determination of magnetization vector configurations in an epitaxial double spin valve structure si 001 cu co cu feni cu co cu |
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