Abstract
Small bubbles were found in magnetic garnet films with the easy axis perpendicular to the film plane. Their diameter is smaller than that of normal bubbles. They appear after stripe domains have been chopped by a pulsed magnetic field with high intensity after a single chopping. Small bubbles are generated under a limited range of bias field and pulse field conditions. They remain stable within a narrow bias field range, above which they collapse and below which they transit irreversibly into larger elliptical bubbles or stripes. The contrast of the Faraday image of small bubbles is different from that of normal bubbles.
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