Nanocrystallinity as a Route to Metastable Phases: Rock Salt ZnO
نویسندگان
چکیده
منابع مشابه
APPLIED PHYSICS REVIEWS—FOCUSED REVIEW Review of zincblende ZnO: Stability of metastable ZnO phases
Common II-VI compound semiconducting materials are stable thermodynamically with zincblende phase, while the II-O materials such as zinc oxide ZnO and beryllium oxide BeO are stable with wurtzite phase, and cadmium oxide CdO and magnesium oxide MgO are stable in rocksalt phase. This phase disharmony in the same material family laid a challenge for the basic physics and in practical applications...
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This paper reports on the pressure dependence of the optical absorption edge of ZnO in the wurtzite and rock-salt phase, up to 14 GPa. Both vapor-phase monocrystals and pulsed-laser-deposition thin films have been investigated. In both types of samples the wurtzite to rocksalt transition is observed at 9.7G0.2 GPa. The absorption tail of the fundamental gap, as measured in monocrystals, exhibit...
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Kinetics of the wurtzite-to-rock-salt transformation in ZnO has been studied in the 5-7 GPa pressure range at temperatures below the activation of diffusion processes. The detailed analysis of non-isothermal experimental data using the general evolution equation describing the kinetics of direct phase transformations in solids allowed us to study the kinetic particularities of both nucleation a...
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ژورنال
عنوان ژورنال: Chemistry of Materials
سال: 2013
ISSN: 0897-4756,1520-5002
DOI: 10.1021/cm400293j