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Wulff shape of strontium titanate nanocuboids

Authors :
James A. Enterkin
Laurence D. Marks
Federico A. Rabuffetti
Lawrence A. Crosby
Kenneth R. Poeppelmeier
Source :
Surface Science. 632:L22-L25
Publication Year :
2015
Publisher :
Elsevier BV, 2015.

Abstract

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 γ(110):γ(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.

Details

ISSN :
00396028
Volume :
632
Database :
OpenAIRE
Journal :
Surface Science
Accession number :
edsair.doi.dedup.....dd29d01da847f33cec84a452f89f6a49
Full Text :
https://doi.org/10.1016/j.susc.2014.10.014