Size-temperature phase diagram of gallium
Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanostructures, Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences P. O. Box 1129, Hefei 230031, PRC
Accepted: 6 March 2011
The size effect of materials on the phase structure has been proved by many experiments, and here for the first time, we proposed a size-temperature phase diagram of gallium (Ga). We found that liquid Ga as well as its solid-liquid phase transition (PT) is size dependent. This PT phenomenon was successfully explained in terms of nucleation theory. The size-temperature phase diagram offered a universal phenomenological explanation for the size-related phase selection of Ga. This finding would enrich the general knowledge about the new phenomena induced by the finite-size effect.
PACS: 64.70.Nd – Structural transitions in nanoscale materials / 64.70.D- – Solid-liquid transitions / 61.46.Df – Structure of nanocrystals and nanoparticles ("colloidal" quantum dots but not gate-isolated embedded quantum dots)
© EPLA, 2011