室温合成的 BaZr(x)Ti(1-x)O3 纳米晶体的局域结构扭曲。

Local structural distortion of BaZr(x)Ti(1-x)O3 nanocrystals synthesized at room temperature.

机构信息

Department of Chemistry, University of Southern California, Los Angeles, California 90089, USA.

出版信息

Chem Commun (Camb). 2012 Feb 1;48(10):1437-9. doi: 10.1039/c1cc14166j. Epub 2011 Sep 1.

Abstract

Single crystalline, sub-15 nm BaZr(x)Ti(1-x)O(3) (0 ≤x≤ 1) nanocrystals were synthesized at room temperature via the vapor diffusion sol-gel method. As-prepared nanocrystals exhibit noncentrosymmetric regions whose volume fraction increases significantly upon substitution of small amounts of Zr(4+) for Ti(4+) and reaches a maximum for substitution levels ranging from 10 to 20 mol%.

摘要

采用室温下的气相扩散溶胶-凝胶法合成了具有四方相结构的亚 15nm 尺寸的 BaZr(x)Ti(1-x)O(3)（0 ≤x≤ 1）单晶纳米晶。研究表明，在少量 Zr(4+)取代 Ti(4+)时，纳米晶中出现非中心对称区域，且其体积分数随着取代量的增加而显著增大，在取代度为 10%到 20%时达到最大值。