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Effects of Group III Cation Substitution in the Raman Spectra of Some Defective Chalcopyrites
Author(s) -
Attolini G.,
Bini S.,
Lottici P. P.,
Razzetti C.
Publication year - 1992
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170270519
Subject(s) - raman spectroscopy , polar , spectral line , chemistry , ion , crystallography , group (periodic table) , molecular vibration , substitution (logic) , physics , optics , organic chemistry , astronomy , computer science , programming language
We report on the Raman spectra of CdIn 2 Se 4 and ZnIn 2 Se 4 obtained in a transparency region. These spectra have a disordered‐like appearance at high frequencies. A comparison is made with the Raman and IR spectra of the similar compounds CdGa 2 Se 4 and ZnGa 2 Se 4 . The overall vibrational behaviour is mainly determined by the anion and a correspondence may be observed between the frequencies of some high energy polar modes. A strong non‐polar breathing mode is observed at nearly the same frequency in all these compounds. The observed similarities between the spectra are discussed within the frame of the existing simplified models.