On the relation between the thickness dependence of optical absorption and the surface layers of barium titanate single crystals |
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Authors: | Coufová P. Arend H. |
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Affiliation: | (1) Institute of Physics, Czechosl. Acad. Sci., Prague |
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Abstract: | Single crystals of BaTiO3, prepared by crystallization in the system BaCl2-BaO-BaTiO3-show a dependence of the optical absorption coefficient on the sample thickness. The observed thickness dependence of the absorption coefficient can be explained by the existence of a surface layer with optical properties differing from those of the inner part of the crystal. By means of an etching method a direct determination of the thickness of the surface layer of crystals in the thickness range of 0.075 to 0.178 mm was carried out. The value found is (6.0±0.2)×10-4 cm.
iO3, 12-BaO-BaTiO3 . . 0,075 0,178 mm. (6,0±0,2). 10-4 cm. |
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