Abstract
Dispersions of nanoscale Pb particles embedded in Si, Al, and Cu matrices have been synthesized by ion implantation and subsequent annealing. The melting transitions of the embedded Pb nanocrystals with epitaxial particle/matrix interfaces were investigated by means of in situ high-temperature X-ray diffraction. Due to different levels of lattice mismatch, the Pb nanoprecipitates experience a different elastic strain in different matrices. Further analysis on the lattice constants of the embedded Pb nanocrystals gives unambiguous evidence of the strain-related pressure effect, which is particle size and matrix dependent, on tuning of the melting behavior of the embedded Pb nanoparticles.
Highlights
E Abstract L Dispersions of nanoscale Pb particles embedded in Si, Al, and Cu matrices have been synthesized by ion implantation and subsequent annealing
E melting point of nanoparticles and thin films can be considerably lowered compared to the equilibrium melting point of the corresponding bulk solids (T0) [1,2,3,4,5,6]
Structural Characterization Immediately after ion implantation and subsequent annealing, the structure of the Pb NCs was assessed by conventional X-ray diffraction (XRD)
Summary
E Abstract L Dispersions of nanoscale Pb particles embedded in Si, Al, and Cu matrices have been synthesized by ion implantation and subsequent annealing. The melting transitions of the embedded Pb nanocrystals with epitaxial particle/matrix. Due to different levels of lattice I mismatch, the Pb nanoprecipitates experience a different elastic strain in different matrices. Further analysis on the lattice constants of the embedded Pb nanocrystals gives unambiguous evidence of the strain-related pressure effect,. T which is particle size and matrix dependent, on tuning of the melting behavior of the embedded Pb nanoparticles. A The melting behavior of low-dimensional solids, such as investigations indicated that two major effects are rethin films, nanofibers, and nanoparticles, has drawn increasing attention in the past decades due to a fundamental understanding of their melting behavior at surfaces/. E melting point of nanoparticles and thin films can be considerably lowered compared to the equilibrium melting point of the corresponding bulk solids (T0) [1,2,3,4,5,6].
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