Order and Frustration in Artificial Magnetic Patterns |
| H. Zabel, A. Schumann, A. Westphalen and A. Remhof
Department of Physics and Astronomy, Ruhr-Universität Bochum, Universitätstr. 150, 44780 Bochum, Germany |
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| Artificial magnetic dipole arrays arranged on a square lattice exhibit a fascinating variety and complexity of configurations. Among the 16 possible configurations, six fulfill the spin ice rule of two dipoles pointing into a vertex and two point out. We present experimental realizations of magnetic dipole arrays and discuss the remanent state as well as the magnetization reversal in an external field. |
| DOI: 10.12693/APhysPolA.115.59 PACS numbers: 75.75.+a, 75.60.Jk, 41.20.Gz |