کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1332469 979042 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nonstoichiometry of ZnGeP2 crystals probed by static tensimetric method
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Nonstoichiometry of ZnGeP2 crystals probed by static tensimetric method
چکیده انگلیسی

sThe nonstoichiometry of ZnGeP2 has been determined based on the p–T dependences measured above ZnP2–Ge samples in the temperature range of 980–1225 K by a high-sensitive and precise tensimetric static method with a quartz Bourdon gauge. Scanning of the compositional range 49–51 mol% ZnP2 in the closed system and construction of the p–T dependences were possible due to incongruent evaporation of ZnGeP2 and formation of volatile species Zn(g), P4(g) and P2(g). The maximum homogeneity range of the solid ZnGeP2 was determined between 50.03 and 49.61 mol% ZnP2 at a temperature of 1128 K, based on the inflection points on the p–T dependences, corresponding to transitions of the three-phase (solid–solid–vapor) equilibrium to a two-phase (solid–vapor) one and vice visa. The nonstoichiometry as the overall concentration of defects is considered to gain a better insight into the defect chemistry of ZnGeP2.

The nonstoichiometry of ZnGeP2 on the T–x diagram of the ZnP2–Ge system.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Solid State Chemistry - Volume 183, Issue 9, September 2010, Pages 2242–2247
نویسندگان
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