Size-, dimensionality-, and composition-dependent Debye temperature of monometallic and bimetallic nanocrystals in the deep nanometer scale

作者：Yang C C^*; Li S

来源：Physica Status Solidi B-Basic Solid State Physics, 2011, 248(6): 1375-1378.

DOI：10.1002/pssb.201046487

• Debye temperature
• metals
• nanocrystals
• thermodynamics

A nanothermodynamic model was established to describe the Debye temperature of monometallic and bimetallic nanocrystals in the deep nanometer scale with respect to the effects of size, dimensionality, and also composition. The results indicate that the Debye temperature decreases with decreasing crystal size for both monometallic and bimetallic nanocrystals, which is consistent with the experimental data. With considering the physicochemical properties of monometallic and bimetallic nanocrystals in the sub-5 nm scale, the developed model may provide new insight into the fundamental understanding of their thermal stability for applications in heterogeneous catalysis, sensors as well as microelectronic devices.

• 出版日期2011-6