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Title: Understanding thermal annealing of artificial spin ice

Abstract

Here, we have performed a detailed study on thermal annealing of the moment configuration in artificial spin ice. Permalloy (Ni 80Fe 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 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.

Authors:
 [1];  [2];  [3];  [4];  [5];  [5];  [6];  [5]; ORCiD logo [1]
  1. Yale Univ., New Haven, CT (United States); Univ. of Illinois at Urbana-Champaign, IL (United States)
  2. Univ. of Illinois at Urbana-Champaign, IL (United States)
  3. Univ. of Illinois at Urbana-Champaign, IL (United States); Wayne State Univ., Detroit, MI (United States)
  4. Yale Univ., New Haven, CT (United States)
  5. Univ. of Minnesota, Minneapolis, MN (United States)
  6. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Univ. of Illinois at Urbana-Champaign, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; National Science Foundation (NSF)
OSTI Identifier:
1593732
Alternate Identifier(s):
OSTI ID: 1575826
Grant/Contract Number:  
SC0010778; DMR-1807124; 892333218NCA000001
Resource Type:
Accepted Manuscript
Journal Name:
APL Materials
Additional Journal Information:
Journal Volume: 7; Journal Issue: 11; Journal ID: ISSN 2166-532X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Zhang, Xiaoyu, Lao, Yuyang, Sklenar, Joseph, Bingham, Nicholas S., Batley, Joseph T., Watts, Justin D., Nisoli, Cristiano, Leighton, Chris, and Schiffer, Peter. Understanding thermal annealing of artificial spin ice. United States: N. p., 2019. Web. doi:10.1063/1.5126713.
Zhang, Xiaoyu, Lao, Yuyang, Sklenar, Joseph, Bingham, Nicholas S., Batley, Joseph T., Watts, Justin D., Nisoli, Cristiano, Leighton, Chris, & Schiffer, Peter. Understanding thermal annealing of artificial spin ice. United States. doi:10.1063/1.5126713.
Zhang, Xiaoyu, Lao, Yuyang, Sklenar, Joseph, Bingham, Nicholas S., Batley, Joseph T., Watts, Justin D., Nisoli, Cristiano, Leighton, Chris, and Schiffer, Peter. Tue . "Understanding thermal annealing of artificial spin ice". United States. doi:10.1063/1.5126713. https://www.osti.gov/servlets/purl/1593732.
@article{osti_1593732,
title = {Understanding thermal annealing of artificial spin ice},
author = {Zhang, Xiaoyu and Lao, Yuyang and Sklenar, Joseph and Bingham, Nicholas S. and Batley, Joseph T. and Watts, Justin D. and Nisoli, Cristiano and Leighton, Chris and Schiffer, Peter},
abstractNote = {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.},
doi = {10.1063/1.5126713},
journal = {APL Materials},
number = 11,
volume = 7,
place = {United States},
year = {2019},
month = {11}
}

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Works referenced in this record:

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