由钛酸钡和钛酸锶组成的单晶钙钛矿纳米棒的合成。

Synthesis of single-crystalline perovskite nanorods composed of barium titanate and strontium titanate.

作者信息

Urban Jeffrey J, Yun Wan Soo, Gu Qian, Park Hongkun

机构信息

Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, USA.

出版信息

J Am Chem Soc. 2002 Feb 20;124(7):1186-7. doi: 10.1021/ja017694b.

DOI:10.1021/ja017694b

PMID:11841284

Abstract

We report the solution-based synthesis of single-crystalline nanorods composed of barium titanate (BaTiO3) and strontium titanate (SrTiO3), which yields well-isolated nanorods with diameters ranging from 5 to 60 nm and lengths reaching up to >10 mum. Electron microscopy and diffraction measurements show that these nanorods are composed of single-crystalline cubic perovskite BaTiO3 and SrTiO3 with a principal axis of the unit cell preferentially aligned along the wire length. These BaTiO3 and SrTiO3 nanorods should provide promising materials for fundamental investigations on nanoscale ferroelectricity, piezoelectricity, and paraelectricity.

摘要

我们报道了基于溶液法合成由钛酸钡（BaTiO3）和钛酸锶（SrTiO3）组成的单晶纳米棒，该方法可制备出直径在5至60纳米之间、长度超过10微米且分离良好的纳米棒。电子显微镜和衍射测量表明，这些纳米棒由单晶立方钙钛矿BaTiO3和SrTiO3组成，其晶胞主轴优先沿纳米棒长度方向排列。这些BaTiO3和SrTiO3纳米棒应为纳米尺度铁电性、压电性和顺电性的基础研究提供有前景的材料。