Pressure dependence of Raman modes in the chalcopyrite quaternary alloy AgxCu1-xGaS2

Conference · Sun Dec 31 00:00:00 EST 2000

OSTI ID:788072

Choi, In-Hwan; Yu, Peter Y

Raman scattering in the chalcopyrite quaternary alloy Ag{sub x}Cu{sub 1-x}GaS{sub 2} has been studied under high pressure (up to 7 GPa) and at low temperature (50 K) using a diamond anvil high pressure cell for alloy concentrations x=1, 0.75, 0.5, 0.25 and 0. This has allowed us to determine the dependence of their zone-center phonon modes on both pressure and alloy concentration. The resultant phonon pressure coefficients are helpful in understanding the nature of the phonon modes in these chalcopyrites.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Director, Office of Science. Office of Basic Energy Studies. Division of Materials Sciences (US)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 788072
• Report Number(s): LBNL-48893; R&D Project: 506201; TRN: US0110651
• Resource Relation: Conference: 9th International Conference on High Pressure Semiconductor Physics, Sapporo (JP), 09/24/2000--09/28/2000; Other Information: PBD: 31 Dec 2000
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALLOYS
CHALCOPYRITE
DIAMONDS
PHONONS
PHYSICS
PRESSURE COEFFICIENT
PRESSURE DEPENDENCE
SCATTERING