Understanding thermal annealing of artificial spin ice
| Autor: | Chris Leighton, Justin D. Watts, Yuyang Lao, Joseph T. Batley, Joseph Sklenar, Peter Schiffer, Xiaoyu Zhang, Nicholas S. Bingham, Cristiano Nisoli |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Permalloy Materials science Condensed matter physics Condensed Matter - Mesoscale and Nanoscale Physics Annealing (metallurgy) lcsh:Biotechnology General Engineering FOS: Physical sciences 02 engineering and technology Interaction energy 021001 nanoscience & nanotechnology 01 natural sciences lcsh:QC1-999 Spin ice Condensed Matter::Materials Science Thermalisation Low energy lcsh:TP248.13-248.65 Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences Curie temperature General Materials Science 0210 nano-technology lcsh:Physics |
| Zdroj: | APL Materials, Vol 7, Iss 11, Pp 111112-111112-6 (2019) |
| Popis: | We have performed a detailed study of thermal annealing of the moment configuration in artificial spin ice. Permalloy (Ni$_{80}$Fe$_{20}$) artificial spin ice samples were examined in the prototypical square ice geometry, studying annealing as a function of island thickness, island shape, and annealing temperature and duration. We also measured the Curie temperature as a function of film thickness, finding that thickness has a strong effect on the Curie temperature in regimes of relevance to many studies of the dynamics of artificial spin ice systems. Increasing the interaction energy between island moments and reducing the energy barrier to flipping the island moments allows the system to more closely approach the collective low energy state of the moments upon annealing, suggesting new channels for understanding the thermalization processes in these important model systems. The following article has been accepted by APL Materials. After it is published, it will be found at Link |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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