Understanding thermal annealing of artificial spin ice
- Yale Univ., New Haven, CT (United States); Univ. of Illinois at Urbana-Champaign, IL (United States)
- Univ. of Illinois at Urbana-Champaign, IL (United States)
- Univ. of Illinois at Urbana-Champaign, IL (United States); Wayne State Univ., Detroit, MI (United States)
- Yale Univ., New Haven, CT (United States)
- Univ. of Minnesota, Minneapolis, MN (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Here, we have performed a detailed study on thermal annealing of the moment configuration in artificial spin ice. Permalloy (Ni80Fe20) 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 allow 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.
- Research Organization:
- Univ. of Illinois at Urbana-Champaign, IL (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Yale Univ., New Haven, CT (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
- Grant/Contract Number:
- SC0010778; DMR-1807124; 892333218NCA000001; 89233218CNA000001
- OSTI ID:
- 1593732
- Alternate ID(s):
- OSTI ID: 1575826; OSTI ID: 1635515; OSTI ID: 1779106
- Report Number(s):
- LA-UR-19-29694; TRN: US2100768
- Journal Information:
- APL Materials, Vol. 7, Issue 11; ISSN 2166-532X
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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