Abstract
We present a study of structural change of the magnetic domains in La 1.36Sr 1.64Mn 2O 7 using magneto-optical effect of a garnet film mounted on the ab-plane of a crystal. The maze domain formed below 65 K changes into the stripe domain elongated along field direction by applying in-plane field. Under an offset field perpendicular to the plane, however, the domain pattern changes into bubbles. These domain patterns are stable even after removing the field. The in-plane field needed for such structural change becomes small at higher temperatures. These changes are similar to those observed in bubble garnet films.
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