Vortex Core Reversal (IMAGE)

Max-Planck-Gesellschaft

Vortex Core Reversal

Caption

Figure 1: Dynamical reversal of the vortex core: The upper section shows the "magnetic needles" of the vortex core, pointing down on the left and up on the right. The lower section shows these two magnetization directions of the vortex core in two images, taken with a magnetic scanning X-ray microscope at the Advanced Light Source in Berkeley, Calif. In the center is the bipolar magnetic field pulse (250 MHz, 1.5 milli-Tesla at the peak) which causes the vortex core to reverse.

Credit

Max Planck Institute of Metals Research in Stuttgart

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