Isothermal section of the Pt–Sb–Te system at 800°C

PtTe2: Potential new material for the growth of defect-free TeO2 single crystals

“…The melting or decomposition temperatures are, respectively, 957, 1017, 737 and 1147 1C. Kim has shown that they are thermodynamically stable [19,20], and proposed the phase diagram which is reproduced in Fig. 1.…”

“…This material is not a usual alloy and very few works report on the synthesis of Pt/Te compounds. Phase diagrams were established from several mixtures of elemental platinum and tellurium, loaded in small amounts in evacuated and sealed silica glass capsules, which are then heated at selected temperatures [19,20,23,24]. The single and congruent phase PtTe 2 was obtained by heating a stoichiometric mixture at 800 1C, followed by a soak at this temperature during 22 days [20].…”

Isothermal section of the Pt–Sb–Te system at 1000°C

“…1), established based on the results (Table 1), shows five solid phases: Pt, PtSb, PtSb 2 , Pt 3 Te 4 , and PtTe 2 . In addition, two fields of liquid exist: a large field extends across the ternary system from the Pt-Sb join to the Pt-Te join [referred to as liquid (1)], and a second liquid is restricted a thin strip near the Sb-Te join [referred to as liquid (2)]. Electron microprobe analyses show that the Pt content of liquid (2) becomes Pt-poor as substitution of Te for Sb increases, and the composition of the phase coexisting with liquid (1) and PtSb 2 is Pt 47 Sb 47 Te 6 , which corresponds to its largest departure (3 at.%) from stoichiometry.…”

“…The phase relations of the system Pt-Sb-Te were studied earlier by Kim at 800 • C [1] and 600 • C [2], and by El-Boragy and Schubert [3] at 650 • C. It is now known that at 800 • C, platinum (Pt), PtSb, Pt 3 Sb 2 , PtTe, Pt 3 Te 4 , Pt 2 Te 3 , PtTe 2 are stable phases, and at 600 • C Pt 5 Sb, Pt 3 Sb, Pt 3 Sb 2 , Sb 2 Te 3 , antimony (Sb), and tellurium (Te) appear as additionally stable phases.…”

Synthesis of Pt-Pd antimonide minerals at 1000 °C and the extent of Pt-Pd substitutions

“…The temperature of 1000°C was chosen for this study because Skinner et al (1976) adopted 1000°C to divide higher temperature liquidus processes from lower temperature subsolidus reactions. Unfortunately, the experimental data available in the literature are only on the Ptor Pd-bearing antimonides (Kim, 1997(Kim, , 1999(Kim, , 2006Kim and Chao, 1991), and the information on the Pt-Pd-Sb ternary phase relations is non-existent.…”