EFFECTS OF GROUP-III CATION SUBSTITUTION IN THE RAMAN-SPECTRA OF SOME DEFECTIVE CHALCOPYRITES

被引:16
作者
ATTOLINI, G [1 ]
BINI, S [1 ]
LOTTICI, PP [1 ]
RAZZETTI, C [1 ]
机构
[1] UNIV PARMA,DEPT PHYS,I-43100 PARMA,ITALY
关键词
D O I
10.1002/crat.2170270519
中图分类号
O7 [晶体学];
学科分类号
0702 ; 070205 ; 0703 ; 080501 ;
摘要
We report on the Raman spectra of CdIn2Se4 and ZnIn2Se4 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 CdGa2Se4 and ZnGa2Se4. 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.
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页码:685 / 690
页数:6
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