期刊
JOURNAL OF APPLIED PHYSICS
卷 114, 期 23, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4851735
关键词
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资金
- Spain MINECO [MAT2010-21270-C04-01/04]
- MALTA Consolider [CSD2007-00045]
- Generalitat Valenciana [GVA-ACOMP-2013-1012]
- Vicerrectorado de Investigacion y Desarrollo of UPV [UPV2011-0914 PAID-05-11, UPV2011-0966 PAID-06-11]
- CIW
- CDAC
- UNLV
- LLNL through DOE-NNSA
- LLNL through DOE-BES
- LLNL through NSF
- DOE-BES [DEAC02-06CH11357]
- UNLV HPSEC by U.S. DOE, NNSA [DE-FC52-06NA26274]
We report on high-pressure x-ray diffraction measurements up to 19.8 GPa in zinc digallium telluride (ZnGa2Te4) at room temperature. An irreversible structural phase transition takes place at pressures above 12.1 GPa and upon decompression a third polymorph of ZnGa2Te4 was recovered as a metastable phase at pressures below 2.9 GPa. Rietveld refinements were carried out for the three detected polymorphs, being their possible crystal structures reported. The axial compressibilities for the low-pressure phase of ZnGa2Te4 have been determined as well as the equation of state of the low-and high-pressure phases. The reported results are compared with those available in the literature for related compounds. Pressure-induced coordination changes and transition mechanisms are also discussed. (C) 2013 AIP Publishing LLC.
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