Pressure induced structural transitions in CuSbS2 and CuSbSe2 thermoelectric compounds
- Univ. of Nevada, Las Vegas, NV (United States). Dept. of Physics and Astronomy and High Pressure Science and Engineering Center (HiPSEC)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Univ. of Nevada, Las Vegas, NV (United States)
We have investigated the structural behavior of CuSbS2 and CuSbSe2 thermoelectric materials under high pressure conditions up to 80 GPa using angle dispersive x-ray diffraction in a diamond anvil cell (DAC). We have also performed high-pressure Raman spectroscopy measurements up to 15 GPa. We observed a pressure-induced structural transformation from the ambient orthorhombic structure with space group Pnma to a triclinic type structure with space group P1 beginning around 8 GPa in both samples and completing at 13 GPa and 10 GPa in CuSbS2 and CuSbSe2, respectively. High pressure Raman experiments complement the transitions observed by high-pressure x-ray diffraction (HPXRD). The transitions were found to be reversible on releasing the pressure to ambient in the DAC. The bulk modulus and compressibility of these materials are further discussed.
- Research Organization:
- Univ. of Nevada, Las Vegas, NV (United States); Carnegie Inst. of Science, Washington, DC (United States). Geophysical Lab.
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA), Office of Defense Science (NA-113); USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Legacy Management (LM), Office of Field Operations
- Grant/Contract Number:
- NA0001982; NA0001974; FG02-99ER45775; AC02-06CH11357; NA0002006
- OSTI ID:
- 1332338
- Alternate ID(s):
- OSTI ID: 1254361; OSTI ID: 1338323
- Journal Information:
- Journal of Alloys and Compounds, Vol. 643, Issue C; ISSN 0925-8388
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Similar Records
Covalency is Frustrating: La2Sn2O7 and the Nature of Bonding in Pyrochlores under High Pressure–Temperature Conditions
Pressure-Induced Polymerization of LiN(CN)2