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Phase relations in the system PbS-PbSe-PbTe
| Content Provider | Semantic Scholar |
|---|---|
| Author | Chang, Luke L. Y. |
| Copyright Year | 1994 |
| Abstract | Phase relations in the system PbS-PbSe-PbTe were investigated in the temperature range between 1150 and 300~ There is a complete solid solution series along the join PbS-PbSe, whereas miscibility gaps exist below ~ 350~ and 805~ along joins PbSe-PbTe and PbS-PbTe, respectively. Both gaps extend into the ternary system, and the range of the gap between PbS and PbTe reduces in size with temperature as well as Se-content. By using the subregular model of mixing (Ganguly and Saxena, 1987), mixing energetics and activity- composition relations of PbX were derived. The temperature-dependence of the interaction parameters was calculated to be 5057.6 - 1.7T, 9605.2 - 4.4T, 3933.2 - 3.1T (T < 500~ 6410.3 - 6.35T (T < 500~ 1649 - 0.26T, 1594.6 - 0.2T, and 12906.3 - 17.3T for WsTe, Wves, Wsere, WT~S~, Wss~, WsCs, and WSSeT~, respectively. A critical temperature along the join PbS-PbSe at ~ 100~ was obtained from interaction parameter calculation, which suggests the separation of the PbS-PbSe series. Correlation of solid-solution ranges established in this study with natural occurrences was made. K~VWORDS: lead chalcogenides, phase relations, thermodynamics, PbS-PbSe-PbTe system. |
| Starting Page | 567 |
| Ending Page | 578 |
| Page Count | 12 |
| File Format | PDF HTM / HTML |
| DOI | 10.1180/minmag.1994.058.393.04 |
| Volume Number | 58 |
| Alternate Webpage(s) | http://www.minersoc.org/pages/Archive-MM/Volume_58/58-393-567.pdf |
| Alternate Webpage(s) | https://doi.org/10.1180/minmag.1994.058.393.04 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
