Melting of Pb Nanocrystals Embedded in Al, Si, and Cu Matrices.
Melting of Pb Nanocrystals Embedded in Al, Si, and Cu Matrices.
复制标题
嵌入铝、硅和铜基体中的铅纳米晶体的熔化。
DOI：
10.1186/s11671-015-1196-5
复制
发表时间：
2015-12
影响因子：
--
通讯作者：
Zhu H
中科院分区：
文献类型：
--
作者：
Wang H;Zhu H
通过离子注入和随后的退火热处理，制备了镶嵌在硅、铝和铜基质中的纳米级铅颗粒的分散体。用原位高温X射线衍射法研究了具有外延颗粒/基质界面的嵌铅纳米晶的熔化转变。由于晶格失配程度的不同，铅纳米沉淀物在不同的基质中经历了不同的弹性应变。对嵌入的铅纳米晶的晶格常数的进一步分析给出了与应变相关的压力效应的明确证据，该效应依赖于颗粒大小和基质，取决于嵌入的铅纳米颗粒的熔化行为。
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.