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Size‐, dimensionality‐, and composition‐dependent Debye temperature of monometallic and bimetallic nanocrystals in the deep nanometer scale
Author(s) -
Yang C. C.,
Li S.
Publication year - 2011
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201046487
Subject(s) - bimetallic strip , nanocrystal , nanometre , materials science , debye model , thermal stability , curse of dimensionality , microelectronics , nanoscopic scale , crystal (programming language) , nanotechnology , chemical physics , chemical engineering , thermodynamics , chemistry , metal , metallurgy , physics , composite material , programming language , machine learning , engineering , computer science
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.