Abstract
We have used spectroscopic and magneto-optic methods to study the effect of defects on the transmission spectrum, thickness, refractive index, and period of the striated domain structure in thin iron garnet films exposed to fast neutron fluences of 4.5·1017 and 1019 cm−2. We observed both a decrease in transmission and a smearing of the interference maxima. The decrease in the quality of the interference fringes was observed in the visible spectrum for these samples. It was due to increased diffuse scattering of light by nonuniformities whose dimensions were comparable to the wavelength of the scattered light. It was determined that radiation defect clusters had no influence on the film thickness, but they did significantly alter the wavelength dependence of the refractive index and increased the period of domain structure striations.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 8, pp. 45–48, August, 1988.
We wish to thank A. G. Shishkov for discussions of the experimental results.
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Antonov, L.I., Zhukarev, A.S., Osipova, L.P. et al. Optical and magnetic properties of iron garnet films with high defect density. Soviet Physics Journal 31, 644–646 (1988). https://doi.org/10.1007/BF01102541
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DOI: https://doi.org/10.1007/BF01102541