The growth and defect structure of CdF{sub 2} and nonstoichiometric Cd{sub 1-x}R{sub x}F{sub 2+x} phases (R are rare earth elements or in): Part VI. The optical properties of Cd{sub 0.9}R{sub 0.1}F{sub 2.1} crystals
- Moscow State University (Russian Federation)
- Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation)
The optical properties of the isoconcentration series of Cd{sub 0.9}R{sub 0.1}F{sub 2.1} crystals (R = Y, La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb, or Lu) grown from a melt by the Bridgman method have been investigated. The crystals have an anomalous birefringence ({approx}10{sup -6}) nonuniformly distributed over the sample diameter; the dichroism in them does not exceed 10{sup -9}. Scanning using a spectral modulator showed the nonuniform distribution of rare earth elements over the crystal diameter. The refractive indices n have been measured at wave-lengths of 0.436, 0.546, and 0.589 {mu}m. The character of change in n along the rare-earth series is nonuniform and similar to the change in n in Sr{sub 0.9}R{sub 0.1}F{sub 2.1} crystals. It is shown that the refractive indices in Cd{sub 1-x}R{sub x}F{sub 2+x} crystals, depending on the RF{sub 3} content, can be estimated using the method of molecular refraction additivity.
- OSTI ID:
- 22050818
- Journal Information:
- Crystallography Reports, Vol. 54, Issue 4; Other Information: Copyright (c) 2009 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7745
- Country of Publication:
- United States
- Language:
- English
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