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Far infrared study of optical phonons in K1−xRbxI mixed crystals

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Abstract

The farinfrared properties of mixed alkalai halide crystals, K1−xRbxI, x=0.25 and 0.50, have been studied at room temperature. Dispersive Fourier transform spectroscopy (DFTS) has been used to obtain the complex dielectric function of these samples. Infrared-active phonon modes are observed at frequencies close to those of KI and RbI. This two-mode behavior is in agreement with theoretical predictions.

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Memon, A., Tanner, D.B. Far infrared study of optical phonons in K1−xRbxI mixed crystals. Int J Infrared Milli Waves 7, 1805–1811 (1986). https://doi.org/10.1007/BF01010078

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  • DOI: https://doi.org/10.1007/BF01010078

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