Naked-eye visualization of geometric frustration effects in macroscopic spin ices

•Naked eyed visualization of frustration in macroscopic system.•Very good agreement with Monte Carlo simulations.•Investigation of predicted degeneracy in orthorhombic lattice. We study planar rectangular-like arrays composed by macroscopic dipoles (magnetic bars with size around a few centimeters)...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2020-05, Vol.502, p.166471, Article 166471
Main Authors: Gonçalves, R.S., Gomes, A.C.C., Loreto, R.P., Nascimento, F.S., Moura-Melo, W.A., Pereira, A.R., de Araujo, C.I.L.
Format: Article
Language:English
Subjects:
Dipoles
Spin ice
Visualization
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Summary:•Naked eyed visualization of frustration in macroscopic system.•Very good agreement with Monte Carlo simulations.•Investigation of predicted degeneracy in orthorhombic lattice. We study planar rectangular-like arrays composed by macroscopic dipoles (magnetic bars with size around a few centimeters) separated by lattice spacings a and b along each direction. Physical behavior of such macroscopic artificial spin ice (MASI) systems are shown to agree much better with theoretical prediction than their micro- or nano-scaled counterparts, making MASI “almost ideal prototypes” for readily naked-eye visualization of geometrical frustration effects.
ISSN:0304-8853
1873-4766
DOI:10.1016/j.jmmm.2020.166471