Evidence of strain and lattice distortion in lead sulfide nanocrystallites
Evidence of strain and lattice distortion in lead sulfide nanocrystallites
复制标题
硫化铅纳米微晶中应变和晶格畸变的证据
DOI：
10.1063/1.118470
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发表时间：
1997
影响因子：
4
通讯作者：
B. Ratna
中科院分区：
文献类型：
--
作者：
S. Qadri;Jianping Yang;E. Skelton;B. Ratna
对纳米级硫化铅颗粒的 X 射线衍射研究揭示了压缩应变的存在。使用三维周期性双连续立方相作为基体合成了许多粒径范围为 2 至 16 nm 的样品。较大尺寸颗粒的样品可以被索引到面心立方晶格。当粒径降至 6 nm 以下时，观察到立方晶格发生四方畸变，同时晶胞体积减小。
X-ray diffraction studies on nanometer sized lead sulfide particles reveal the presence of a compressive strain. A number of samples with particle sizes ranging from 2 to 16 nm were synthesized using the three dimensional periodic, bicontinuous cubic phase as a matrix. Samples of the larger size particles could be indexed to an fcc lattice. As the particle size decreased below 6 nm, a tetragonal distortion of the cubic lattice was observed, accompanied by a decrease in the unit cell volume.