Increased Gilbert damping in Yttrium Iron Garnet by low temperature vacuum annealing
Fuente:
arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866916332791922688 |
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| author | Cheshire, D. M. Backes, D. Veiga, L. Ishibe Dhesi, S. S. Cavill, S. A. |
| author_facet | Cheshire, D. M. Backes, D. Veiga, L. Ishibe Dhesi, S. S. Cavill, S. A. |
| contents | The effect of thermal surface cleaning on the Gilbert damping, $α$, of yttrium iron garnet (YIG), before capping with a metallic layer, has been investigated. Our results show that $α$ is strongly effected by relatively mild annealing conditions (T = 300 C) when performed in a vacuum. This increase needs to be taken into account when obtaining the spin mixing conductance from spin pumping measurements. We measure an increase in $α$ by a factor of 8 when the YIG is vacuum annealed at 300 C. No such changes in $α$ are observed when annealed at the same temperature in 0.1 mbar of oxygen. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_16005 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Increased Gilbert damping in Yttrium Iron Garnet by low temperature vacuum annealing Cheshire, D. M. Backes, D. Veiga, L. Ishibe Dhesi, S. S. Cavill, S. A. Mesoscale and Nanoscale Physics The effect of thermal surface cleaning on the Gilbert damping, $α$, of yttrium iron garnet (YIG), before capping with a metallic layer, has been investigated. Our results show that $α$ is strongly effected by relatively mild annealing conditions (T = 300 C) when performed in a vacuum. This increase needs to be taken into account when obtaining the spin mixing conductance from spin pumping measurements. We measure an increase in $α$ by a factor of 8 when the YIG is vacuum annealed at 300 C. No such changes in $α$ are observed when annealed at the same temperature in 0.1 mbar of oxygen. |
| title | Increased Gilbert damping in Yttrium Iron Garnet by low temperature vacuum annealing |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2407.16005 |