Growth and properties of epitaxial PtMn/NiFe bilayers on Si (001) substrate containing directly deposited ordered PtMn
Equiatomic PtMn layers have been grown epitaxially on Si (001), with the face-centered tetragonal L1 0-ordered antiferromagnetic phase forming without post-growth magnetic field annealing. The thickness dependence of the exchange anisotropy field and coercivity of the NiFe fe...
| Main Authors: | , , |
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| Format: | Journal article |
| Language: | English |
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2005
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| _version_ | 1826299189853683712 |
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| author | Choi, Y Petford-Long, A Ward, R |
| author_facet | Choi, Y Petford-Long, A Ward, R |
| author_sort | Choi, Y |
| collection | OXFORD |
| description | Equiatomic PtMn layers have been grown epitaxially on Si (001), with the face-centered tetragonal L1 0-ordered antiferromagnetic phase forming without post-growth magnetic field annealing. The thickness dependence of the exchange anisotropy field and coercivity of the NiFe ferromagnetic layer in the epitaxial PtMn/NiFe exchange-coupled bilayers showed the critical thickness of the PtMn to be 10 nm. The exchange biasing properties are stabilised above a PtMn thickness of 15 nm which is much lower than that for polycrystalline PtMn-based exchange-biased systems. The highest value of exchange-bias is observed for a NiFe ferromagnetic layer thickness of 6 nm. The temperature dependence of the magnetic properties in the range 50-400 K shows that H ex and H c increase monotonically in a quasi-linear manner as temperature decreases. Non-saturation of the in-plane magnetisation component of the PtMn, due to the Néel axis lying normal to the interface, is suggested to be responsible for the temperature dependence. © 2005 Elsevier B.V. All rights reserved. |
| first_indexed | 2024-03-07T04:58:07Z |
| format | Journal article |
| id | oxford-uuid:d74e5606-c2bb-44dd-a938-307157dcf4a8 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T04:58:07Z |
| publishDate | 2005 |
| record_format | dspace |
| spelling | oxford-uuid:d74e5606-c2bb-44dd-a938-307157dcf4a82022-03-27T08:40:10ZGrowth and properties of epitaxial PtMn/NiFe bilayers on Si (001) substrate containing directly deposited ordered PtMnJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:d74e5606-c2bb-44dd-a938-307157dcf4a8EnglishSymplectic Elements at Oxford2005Choi, YPetford-Long, AWard, REquiatomic PtMn layers have been grown epitaxially on Si (001), with the face-centered tetragonal L1 0-ordered antiferromagnetic phase forming without post-growth magnetic field annealing. The thickness dependence of the exchange anisotropy field and coercivity of the NiFe ferromagnetic layer in the epitaxial PtMn/NiFe exchange-coupled bilayers showed the critical thickness of the PtMn to be 10 nm. The exchange biasing properties are stabilised above a PtMn thickness of 15 nm which is much lower than that for polycrystalline PtMn-based exchange-biased systems. The highest value of exchange-bias is observed for a NiFe ferromagnetic layer thickness of 6 nm. The temperature dependence of the magnetic properties in the range 50-400 K shows that H ex and H c increase monotonically in a quasi-linear manner as temperature decreases. Non-saturation of the in-plane magnetisation component of the PtMn, due to the Néel axis lying normal to the interface, is suggested to be responsible for the temperature dependence. © 2005 Elsevier B.V. All rights reserved. |
| spellingShingle | Choi, Y Petford-Long, A Ward, R Growth and properties of epitaxial PtMn/NiFe bilayers on Si (001) substrate containing directly deposited ordered PtMn |
| title | Growth and properties of epitaxial PtMn/NiFe bilayers on Si (001) substrate containing directly deposited ordered PtMn |
| title_full | Growth and properties of epitaxial PtMn/NiFe bilayers on Si (001) substrate containing directly deposited ordered PtMn |
| title_fullStr | Growth and properties of epitaxial PtMn/NiFe bilayers on Si (001) substrate containing directly deposited ordered PtMn |
| title_full_unstemmed | Growth and properties of epitaxial PtMn/NiFe bilayers on Si (001) substrate containing directly deposited ordered PtMn |
| title_short | Growth and properties of epitaxial PtMn/NiFe bilayers on Si (001) substrate containing directly deposited ordered PtMn |
| title_sort | growth and properties of epitaxial ptmn nife bilayers on si 001 substrate containing directly deposited ordered ptmn |
| work_keys_str_mv | AT choiy growthandpropertiesofepitaxialptmnnifebilayersonsi001substratecontainingdirectlydepositedorderedptmn AT petfordlonga growthandpropertiesofepitaxialptmnnifebilayersonsi001substratecontainingdirectlydepositedorderedptmn AT wardr growthandpropertiesofepitaxialptmnnifebilayersonsi001substratecontainingdirectlydepositedorderedptmn |