Raman Scattering in ε‐GaSe and ZnIn 2 S 4  Single Crystals under Pressure | Zendy

Vinogradov E. A. | Zendy; Zhizhin G. N. | Zendy; Melnik N. N. | Zendy; Subbotin S. I. | Zendy; Panfilov V. V. | Zendy; Allakhverdiev K. R. | Zendy; Baeaev S. S. | Zendy; Zhitar V. F. | Zendy

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Raman Scattering in ε‐GaSe and ZnIn 2 S 4 Single Crystals under Pressure

Author(s) -

Vinogradov E. A.,

Zhizhin G. N.,

Melnik N. N.,

Subbotin S. I.,

Panfilov V. V.,

Allakhverdiev K. R.,

Baeaev S. S.,

Zhitar V. F.

Publication year - 1980

Publication title -

physica status solidi (b)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.51

H-Index - 109

eISSN - 1521-3951

pISSN - 0370-1972

DOI - 10.1002/pssb.2220990121

Subject(s) - raman scattering , raman spectroscopy , hydrostatic pressure , ionic crystal , ionic bonding , materials science , covalent bond , scattering , hydrostatic equilibrium , crystallography , molecular physics , analytical chemistry (journal) , chemistry , optics , ion , physics , thermodynamics , organic chemistry , quantum mechanics , chromatography

The influence of hydrostatic pressure on the Raman scattering spectra in ε‐GaSe (up to 8.5 kbar) and ZnIn 2 S 4 (up to 10.9 kbar) is investigated at 295 K. Parameters γ i – (1/ v i ) (d v i /d p ) are obtained for both the single crystals; for e‐GaSe values of the mode‐Gruneisen parameters are also obtained. The set of the parameters γ i (Γ i ) shows that these two crystals are layered ones with ionic‐covalent bonds inside the layers; the degree of ionicity in ZnIn 2 S 4 is higher than in ε‐GaSe. “Rigid‐layer” (interlayer) vibrations determined for ZnIn 2 S 4 and ε‐GaSe using γ i ‐parameters show that ZnIn 2 S 4 is not a one‐packet polytype.

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