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Internal vibrational modes and anharmonic effects in ZnWO4 single crystals

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Abstract

The temperature dependence of polarized Raman spectra from single crystals of ZnWO4, which is a promising scintillation material, are reported. Among the eighteen Raman-active modes, all six internal vibrational modes resulting from the WO6 octahedran are tentatively assigned, we believe for the first time. Based on Raman spectra in the temperature range from 14 K to room temperature, anharmonic effects in ZnWO4, which are presented here, again we believe for the first time, are discussed.

© 1991 Optical Society of America

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