The influence of interfacial roughness on the coherence of structure and magnetic coupling across barriers in Fe/MgO multilayers.
Single-crystal Fe/MgO multilayers are model systems in which to study magnetic tunnel junctions. We find that the interfacial roughness leads to the loss of coherence of the crystal structure. For thick MgO layers ferromagnetic (FM) ordering is found using polarized neutron reflectivity (PNR). For t...
| Hlavní autoři: | , , , , , , , , |
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| Médium: | Journal article |
| Jazyk: | English |
| Vydáno: |
2010
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| _version_ | 1826269409713324032 |
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| author | Fan, R Lee, S Goff, J Ward, R Wang, S Kohn, A Wang, C Wildes, A Collins, S |
| author_facet | Fan, R Lee, S Goff, J Ward, R Wang, S Kohn, A Wang, C Wildes, A Collins, S |
| author_sort | Fan, R |
| collection | OXFORD |
| description | Single-crystal Fe/MgO multilayers are model systems in which to study magnetic tunnel junctions. We find that the interfacial roughness leads to the loss of coherence of the crystal structure. For thick MgO layers ferromagnetic (FM) ordering is found using polarized neutron reflectivity (PNR). For thin MgO layers magnetization measurements reveal the presence of antiferromagnetic (AF) interactions, but no long-range AF order is found using PNR. After cycling in a hysteresis loop, FM correlations are found at the coercive point, and this will limit the maximum tunnelling magnetoresistance. |
| first_indexed | 2024-03-06T21:24:37Z |
| format | Journal article |
| id | oxford-uuid:42a6eb12-61c7-4a9c-94ef-8e9c59a37a5c |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T21:24:37Z |
| publishDate | 2010 |
| record_format | dspace |
| spelling | oxford-uuid:42a6eb12-61c7-4a9c-94ef-8e9c59a37a5c2022-03-26T14:50:56ZThe influence of interfacial roughness on the coherence of structure and magnetic coupling across barriers in Fe/MgO multilayers.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:42a6eb12-61c7-4a9c-94ef-8e9c59a37a5cEnglishSymplectic Elements at Oxford2010Fan, RLee, SGoff, JWard, RWang, SKohn, AWang, CWildes, ACollins, SSingle-crystal Fe/MgO multilayers are model systems in which to study magnetic tunnel junctions. We find that the interfacial roughness leads to the loss of coherence of the crystal structure. For thick MgO layers ferromagnetic (FM) ordering is found using polarized neutron reflectivity (PNR). For thin MgO layers magnetization measurements reveal the presence of antiferromagnetic (AF) interactions, but no long-range AF order is found using PNR. After cycling in a hysteresis loop, FM correlations are found at the coercive point, and this will limit the maximum tunnelling magnetoresistance. |
| spellingShingle | Fan, R Lee, S Goff, J Ward, R Wang, S Kohn, A Wang, C Wildes, A Collins, S The influence of interfacial roughness on the coherence of structure and magnetic coupling across barriers in Fe/MgO multilayers. |
| title | The influence of interfacial roughness on the coherence of structure and magnetic coupling across barriers in Fe/MgO multilayers. |
| title_full | The influence of interfacial roughness on the coherence of structure and magnetic coupling across barriers in Fe/MgO multilayers. |
| title_fullStr | The influence of interfacial roughness on the coherence of structure and magnetic coupling across barriers in Fe/MgO multilayers. |
| title_full_unstemmed | The influence of interfacial roughness on the coherence of structure and magnetic coupling across barriers in Fe/MgO multilayers. |
| title_short | The influence of interfacial roughness on the coherence of structure and magnetic coupling across barriers in Fe/MgO multilayers. |
| title_sort | influence of interfacial roughness on the coherence of structure and magnetic coupling across barriers in fe mgo multilayers |
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