X-ray Diffraction Study of Cd 0.8 Zn 0.2 Te Under High Pressure and Temperature |
| |
| Authors: | D. Martínez-García Ch. Ferrer-Roca Y. Le Godec P. Munsch J. P. Itié V. Muñoz-Sanjosé |
| |
| Affiliation: | 1. Ed. Investigación , CMUV , pl. 1, Dr. Moliner, 50, Burjassot, Valencia , 46100 , Spain Phone: (34) 96 3 86 46 17 Fax: (34) 96 3 86 46 17 E-mail: domingo.martinez@uv.es;2. Ed. Investigación , CMUV , pl. 1, Dr. Moliner, 50, Burjassot, Valencia , 46100 , Spain;3. PMC , Université P. et M. Curie , T13, E4, B77, 4 Place Jussieu, Paris , 75252 , France;4. LURE , Centre Universitaire Paris-Sud , Bat. 209D, Orsay , 91405 , France |
| |
| Abstract: | Energy dispersive X-ray diffraction using synchrotron radiation has been used to study phase transformations of Cd 0.8 Zn 0.2 Te under high pressure and temperature. We confirm the presence of a cinnabar phase between the zinc-blende and rock-salt phases. But contrary to the results in CdTe, this intermediate phase is found to be stable only on pressure decrease and in a narrower pressure and temperature range. Single-phase cinnabar patterns are obtained only at 300 and 373 K. At 673 K and above, even on pressure decrease, no evidence of the cinnabar phase is found. In this temperature range, a phase segregation phenomenon is observed in the zinc-blende phase during the zinc-blende transition in both upstroke and downstroke, and the retrieved sample at ambient conditions presents a double pattern corresponding to two different Zn contents. |
| |
| Keywords: | Cd 1? x Zn x Te High-pressure High-temperature X-ray Diffraction Synchrotron Radiation Cinnabar Phase |
|
|
