Infrared and Raman spectra of the spinel ZnGa 2 O 4 | Zendy

Van Gorkom G. G. P. | Zendy; Haanstra J. H. | Zendy; v. d. Boom H. | Zendy

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Infrared and Raman spectra of the spinel ZnGa 2 O 4

Author(s) -

Van Gorkom G. G. P.,

Haanstra J. H.,

v. d. Boom H.

Publication year - 1973

Publication title -

journal of raman spectroscopy

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.748

H-Index - 110

eISSN - 1097-4555

pISSN - 0377-0486

DOI - 10.1002/jrs.1250010510

Subject(s) - raman spectroscopy , spinel , phonon , infrared , spectral line , inorganic compound , analytical chemistry (journal) , lattice (music) , materials science , line (geometry) , chemistry , crystallography , physics , condensed matter physics , optics , geometry , mathematics , organic chemistry , chromatography , astronomy , acoustics , metallurgy

A study of the infrared and Raman spectra of single crystals and powders of ZnGa 2 O 4 yields the following k = 0 phonon frequencies: 175 cm −1 ( T 1 u ), 328 cm −1 ( T 1 u ), 420 cm −1 ( T 1 u ), 570 cm −1 ( T 1 u ), 467 cm −1 ( T 2 g ), 611 cm −1 ( T 2 g ), 638 cm −1 ( E g ) and 714 cm −1 ( A 1 g ). The results are compared with the frequencies of the vibronic sidebands of the Cr 3+ R line emission as observed in ZnGa 2 O 4 : Cr 3+ . It is found that the strogest vibronics of the R lines are due to coupling of the Cr 3+ electrons with the T 1u modes of the ZnGa 2 O 4 lattice, especially with the two higher frequency T 1u modes.

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