Abstract
Controlling vertical Bloch line (VBL) position and stripe domain chopping in multiple stripe domains, aligned in parallel by a period of 12 μm, are studied experimentally using a 5-μm bubble garnet film. Patterned high coercive-force CoPt films aligned in parallel are used for stabilizing the stripe domain. During the stripe stretching process, the VBL motion at the stripe head was controlled by the dc conductor current to get two different wall states: one with a VBL at the stripe head and the other without VBL. Stripe chopping experiments for VBL detection have been performed using hairpin and meandering conductors. We found that the meandering conductor presents excellent characteristics; the bias field margin and the chopping pulse amplitude margin are 58 Oe±6% and 133 mA±11%, respectively, for one stripe. VBL generation by the meandering conductor has also been studied using the same sample.
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