Transition metal synthetic ferrimagnets: tuneable media for all-optical switching driven by nanoscale spin current
All-optical switching of magnetization has great potential for use in future ultrafast and energy efficient nanoscale magnetic storage devices. So far, research has been almost exclusively focused on rare-earth based materials, which limits device tunability and scalability. Here, we show that a per...
| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
American Chemical Society
2021
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| _version_ | 1826308705429225472 |
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| author | Dabrowski, M Scott, JN Hendren, WR Forbes, CM Frisk, A Burn, DM Newman, DG Sait, CRJ Keatley, PS N'Diaye, AT Hesjedal, T van der Laan, G Bowman, RM Hicken, RJ |
| author_facet | Dabrowski, M Scott, JN Hendren, WR Forbes, CM Frisk, A Burn, DM Newman, DG Sait, CRJ Keatley, PS N'Diaye, AT Hesjedal, T van der Laan, G Bowman, RM Hicken, RJ |
| author_sort | Dabrowski, M |
| collection | OXFORD |
| description | All-optical switching of magnetization has great potential for use in future ultrafast and energy efficient nanoscale magnetic storage devices. So far, research has been almost exclusively focused on rare-earth based materials, which limits device tunability and scalability. Here, we show that a perpendicularly magnetized synthetic ferrimagnet composed of two distinct transition metal ferromagnetic layers, Ni3Pt and Co, can exhibit helicity independent magnetization switching. Switching occurs between two equivalent remanent states with antiparallel alignment of the Ni3Pt and Co magnetic moments and is observable over a broad temperature range. Time-resolved measurements indicate that the switching is driven by a spin-polarized current passing through the subnanometer Ir interlayer. The magnetic properties of this model system may be tuned continuously via subnanoscale changes in the constituent layer thicknesses as well as growth conditions, allowing the underlying mechanisms to be elucidated and paving the way to a new class of data storage devices. |
| first_indexed | 2024-03-07T07:23:19Z |
| format | Journal article |
| id | oxford-uuid:b6a08f14-1d36-4994-9243-81221595942b |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T07:23:19Z |
| publishDate | 2021 |
| publisher | American Chemical Society |
| record_format | dspace |
| spelling | oxford-uuid:b6a08f14-1d36-4994-9243-81221595942b2022-10-27T10:08:12ZTransition metal synthetic ferrimagnets: tuneable media for all-optical switching driven by nanoscale spin currentJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:b6a08f14-1d36-4994-9243-81221595942bEnglishSymplectic ElementsAmerican Chemical Society2021Dabrowski, MScott, JNHendren, WRForbes, CMFrisk, ABurn, DMNewman, DGSait, CRJKeatley, PSN'Diaye, ATHesjedal, Tvan der Laan, GBowman, RMHicken, RJAll-optical switching of magnetization has great potential for use in future ultrafast and energy efficient nanoscale magnetic storage devices. So far, research has been almost exclusively focused on rare-earth based materials, which limits device tunability and scalability. Here, we show that a perpendicularly magnetized synthetic ferrimagnet composed of two distinct transition metal ferromagnetic layers, Ni3Pt and Co, can exhibit helicity independent magnetization switching. Switching occurs between two equivalent remanent states with antiparallel alignment of the Ni3Pt and Co magnetic moments and is observable over a broad temperature range. Time-resolved measurements indicate that the switching is driven by a spin-polarized current passing through the subnanometer Ir interlayer. The magnetic properties of this model system may be tuned continuously via subnanoscale changes in the constituent layer thicknesses as well as growth conditions, allowing the underlying mechanisms to be elucidated and paving the way to a new class of data storage devices. |
| spellingShingle | Dabrowski, M Scott, JN Hendren, WR Forbes, CM Frisk, A Burn, DM Newman, DG Sait, CRJ Keatley, PS N'Diaye, AT Hesjedal, T van der Laan, G Bowman, RM Hicken, RJ Transition metal synthetic ferrimagnets: tuneable media for all-optical switching driven by nanoscale spin current |
| title | Transition metal synthetic ferrimagnets: tuneable media for all-optical switching driven by nanoscale spin current |
| title_full | Transition metal synthetic ferrimagnets: tuneable media for all-optical switching driven by nanoscale spin current |
| title_fullStr | Transition metal synthetic ferrimagnets: tuneable media for all-optical switching driven by nanoscale spin current |
| title_full_unstemmed | Transition metal synthetic ferrimagnets: tuneable media for all-optical switching driven by nanoscale spin current |
| title_short | Transition metal synthetic ferrimagnets: tuneable media for all-optical switching driven by nanoscale spin current |
| title_sort | transition metal synthetic ferrimagnets tuneable media for all optical switching driven by nanoscale spin current |
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