Formation and control of magnetic vortex chirality in patterned micromagnet arrays.

Autor: Konoto, M., Yamada, T., Koike, K., Akoh, H., Arima, T., Tokura, Y.
Předmět:
Zdroj: Journal of Applied Physics; Jan2008, Vol. 103 Issue 2, p023904, 4p, 1 Diagram, 2 Graphs
Abstrakt: We have succeeded in developing highly ordered magnetic vortices in dense arrays of microstructured magnets and in evaluating individual spin configuration by employing a high-precision spin-imaging technique. High-definition pictures reveal fundamental properties of the ordered vortices, such as stability and interaction of vortex chirality. We have also demonstrated control of the chirality with the use of a magnetic field gradient but without introducing geometric asymmetry in the magnet shape. A simple control mechanism is deduced from micromagnetic simulations. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index