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Titolo:
High pressure and temperature X-ray diffraction studies on CdTe
Autore:
Martinez-Garcia, D; Le Godec, Y; Mezouar, M; Syfosse, G; Itie, JP; Besson, JM;
Indirizzi:
ICMUV, Ed Invest, Valencia 46100, Spain ICMUV Valencia Spain 46100ICMUV, Ed Invest, Valencia 46100, Spain Ctr Univ Paris Sud, LURE, F-91405 Orsay, France Ctr Univ Paris Sud OrsayFrance F-91405 Sud, LURE, F-91405 Orsay, France Univ Paris 06, PMC, DHP, F-75252 Paris, France Univ Paris 06 Paris France F-75252 s 06, PMC, DHP, F-75252 Paris, France
Titolo Testata:
PHYSICA STATUS SOLIDI B-BASIC RESEARCH
fascicolo: 1, volume: 211, anno: 1999,
pagine: 461 - 467
SICI:
0370-1972(199901)211:1<461:HPATXD>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
PHASE-TRANSITIONS; EQUATION; STATE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Martinez-Garcia, D ICMUV, Ed Invest, Pl 1,Dr Moliner 50, Valencia 46100, Spain ICMUV Pl 1,Dr Moliner 50 Valencia Spain 46100 0, Spain
Citazione:
D. Martinez-Garcia et al., "High pressure and temperature X-ray diffraction studies on CdTe", PHYS ST S-B, 211(1), 1999, pp. 461-467

Abstract

The P-T phase diagram of CdTe has been determined by energy dispersive X-ray diffraction using synchrotron radiation at pressures up to 5 GPa and temperatures up to 1173 K. We have confirmed the existence of an intermediate cinnabar phase between the zinc-blende and the rock-salt phases, as reported previously in a room temperature study. This intermediate phase appears only in a very narrow pressure range and can be isolated only in the pressure decrease. We show that there is a quickly reduction of the pressure rangein which the cinnabar phase is observed as the temperature is increased. As a matter of fact, at 773 K and above, the transition occurs directly between the zinc-blende and rock-salt phases, showing the existence of a triplepoint (2.6 +/- 0.1 GPa, 735 +/- 20 K) involving the three solid phases. Above that triple point the solid phase transition boundary compares very well with the results obtained by resistance measurements as well as with the solid-solid-liquid triple-point coordinates determined by differential thermal analysis.

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Documento generato il 23/01/20 alle ore 18:15:09