Abstract
Magnetization processes in $(\mathrm{YCa}{)}_{3}(\mathrm{FeCoGe}{)}_{5}{\mathrm{O}}_{12}$ epitaxial films induced by linearly polarized argon laser light $(\ensuremath{\lambda}=0.488\phantom{\rule{0ex}{0ex}}\ensuremath{\mu}\mathrm{m}$) were observed at room temperature. These processes happened through a displacement of boundary between magnetic domain phases with different in-plane magnetization components. The direction and amplitude of the displacement depended on the polarization direction and light intensity. The results are explained within the scope of a phenomenological theory of photoinduced anisotropy. The microscopic origin of the photomagnetic effect in investigated materials is qualitatively discussed.
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