1. Phase Transitions in Extremely Small Crystals.
- Author
-
Tomaszewski, Paweł E.
- Subjects
- *
OPTICAL diffraction , *OPTICS , *NANOCRYSTALS , *SEMICONDUCTOR nanocrystals , *TEMPERATURE - Abstract
The literature data on the smallest unit cells as well as on the smallest single crystals studied by X-ray diffraction are reviewed. Different types of phase diagrams “temperature—grain size” are presented and discussed. The literature data on the grain-size driven structural phase transitions occurring in nanocrystals (quantum dots) are presented in the form of a database. It was found that there were no reports on phase transitions occurring for nanocrystalline grains with a linear dimension smaller than 7 unit cells. The grain-size driven phase transitions for some nanocrystalline double tungstates, molybdates and phosphates are also described. [ABSTRACT FROM AUTHOR]
- Published
- 2008
- Full Text
- View/download PDF