Wulff shape of strontium titanate nanocuboids

被引：18

作者：

Crosby, Lawrence ^{[1
]}

Enterkin, James ^{[2
]}

Rabuffetti, Federico ^{[3
]}

Poeppelmeier, Kenneth ^{[2
]}

Marks, Laurence ^{[1
]}

机构：

[1] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA

[2] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA

[3] Wayne State Univ, Dept Chem, Detroit, MI 48202 USA

来源：

SURFACE SCIENCE | 2015年 / 632卷

基金：

美国国家科学基金会;

关键词：

Wulff construction; Transmission electron microscopy; Nanocuboid; Hydrothermal synthesis; Strontium titanate; Kirkendall effect; BARIUM-TITANATE; DENSITY; SURFACE; GROWTH;

D O I：

10.1016/j.susc.2014.10.014

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Here we describe the Wulff shape of strontium titanate nanocuboids prepared by a hydrothermal method and annealed at high temperature. Transmission electron microscopy was used to measure the faceting ratios d((110)):d((100)) which are compared with surface energy ratios gamma((110)):gamma((100)) from first-principles calculations. Internal voids attributed to the Kirkendall effect were also measured and show agreement with the external faceting. Experiment and theory are shown to agree strongly within statistical and density functional theory error. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：L22 / L25

页数：4

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