Interference coloring of barium titanate single crystals in polarized light

Abstract

The causes of optical coloration of ferroelectric single crystals of barium titanate are different. For example, the color determined by impurities appears during their crystallization; dichroic — as a result of the absorption of polarized light passing through the crystal. The specific coloration of single crystals also occurs as a result of the interference of ordinary and extraordinary rays propagating in the crystal, as well as due to the dispersion and diffraction of light...

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