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Switching properties of free-standing epitaxial ring magnets |
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| Authors: | M Klui L Lopez-Diaz J Rothman C A F Vaz J A C Bland Z Cui |
| Institution: | a Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 0HE, UK b Rutherford Appleton Laboratory, Chilton, Didcot OX11 0QX, UK |
| Abstract: | We present the results of a study of the magnetic switching properties of arrays of narrow Co(1 0 0) epitaxial ring magnets, with outer diameters between 1 and 2 μm, varying inner diameters and varying film thickness. We discuss measurements and the results of numerical computations of the switching fields for the transition from the vortex state to the ‘onion’ state. A large dependence on the ring width and the film thickness is found. |
| Keywords: | Magnetic rings Switching properties Onion state Vortex state Computational micromagnetics |
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