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 SM ISO690:2012AUTOR, Nou, URSACHI, Veaceslav, AUTOR, Nou, AUTOR, Nou, TIGINYANU, Ion, AUTOR, Nou. Pressure-induced phase transitions in cadmium thiogallate CdGa2Se4. In: Journal of Solid State Chemistry, 2001, vol. 160, pp. 205-211. ISSN 0022-4596. DOI: https://doi.org/10.1006/jssc.2001.9224 |
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  Journal of Solid State Chemistry |
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| Volumul 160 / 2001 / ISSN 0022-4596 | ||||||
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| DOI:https://doi.org/10.1006/jssc.2001.9224 | ||||||
| Pag. 205-211 | ||||||
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The high-pressure behavior of semiconducting cadmium thiogallate CdGa2Se4 with the defect chalcopyrite structure (I4̄, Z=2) is studied by in situ angle-dispersive synchrotron X-ray powder diffraction and optical reflectivity measurements in a diamond anvil cell at room temperature. At 21 GPa an order-disorder phase transition to the rock-salt structure (F4̄ 3m, Z=4) occurs. Upon decompression, the metallic NaCl-type polymorph transforms into zinc-blende (Fm3̄m, Z=4) at pressures of 7.5-4 GPa. The recovered metastable semiconducting material is of the zinc-blende type. |
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| Cuvinte-cheie article, Electric conductivity, phase transition, pressure, solid state, X ray powder diffraction |
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