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arXiv · 0811.2331

Observation of the magnetic domain structures in Cu$_{0,47}$Ni$_{0,53}$ thin films at low temperatures

I. S. Veshchunov·V. A. Oboznov·A. N. Rossolenko·A. S. Prokofiev·L. Ya. Vinnikov·A. Yu. Rusanov·D. V. Matveev
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Abstract

We report on the first experimental visualization of domain structure in films of weakly ferromagnetic Cu$_{0,47}$Ni$_{0,53}$ alloy with different thickness at liquid helium temperatures. Improved high-resolution Bitter decoration technique was used to map the magnetic contrast on the top of the films well below the Curie temperature T$_{Curie}$ ($\sim$ 60 K). In contrast to magnetic force microscopy, this technique allowed visualization of the domain structure without its disturbance while the larger areas of the sample were probed. Maze-like domain patterns, typical for perpendicular magnetic anisotropy, were observed. The average domain width was found to be about 100 nm.

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I. S. Veshchunov, V. A. Oboznov, A. N. Rossolenko, A. S. Prokofiev, L. Ya. Vinnikov, A. Yu. Rusanov, D. V. Matveev. 2008-11-14. Observation of the magnetic domain structures in Cu$_{0,47}$Ni$_{0,53}$ thin films at low temperatures. https://doi.org/10.1134/s0021364008230124

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