Polar vibrational modes in Ag3AsS3 cryst
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N.N. Syrbu; V.Z. Cebotari; M. Bogdanash
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Article
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1996
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Elsevier Science
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English
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Reflectivity spectra of Ag3AsS 3 crystals have been investigated in the range from 50 to 4000 cm i for E]lc and E Lc polarizations, and practically all expected vibrational modes of A 1 and E symmetry have been found. Phonon parameters, i.e. frequencies of LO and TO modes, longitudinal-transverse sp