Magnetic interactions and reversal of Artificial square spin ices

C. Phatak*, M. Pan, A. K. Petford-Long, S. Hong, M. De Graef

*Corresponding author for this work

Research output: Contribution to journalArticle

17 Scopus citations

Abstract

Artificial spin ices are nanoscale geometrically engineered systems that mimic the behavior of bulk spin ices at room temperature. We describe the nanoscale magnetic interactions in a square spin ice lattice by an experimentally verified model that accounts for the correct shape of the magnetic islands. Magnetic force microscopy measurements on lithographically fabricated lattices are compared to Monte Carlo simulations of the reversal process of two lattices with different lattice spacings. Lattice node statistics and correlations show significant differences in the reversal mechanism for lattices with different spacings. The effect of structural variations is also compared for the two lattice reversals.

Original languageEnglish (US)
Article number075028
JournalNew Journal of Physics
Volume14
DOIs
StatePublished - Jul 2012

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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