Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Science 7 October 1994:
Vol. 266. no. 5182, pp. 102 - 104
DOI: 10.1126/science.266.5182.102
Prev | Table of Contents | Next

Articles

Direct Determination of Grain Boundary Atomic Structure in SrTiO3

M. M. McGibbon 1, N. D. Browning 1, M. F. Chisholm 1, A. J. McGibbon 1, S. J. Pennycook 1, V. Ravikumar 2, and V. P. Dravid 2

1 Solid State Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6030, USA.
2 Northwestern University, Department of Materials Science and Engineering, Evanston, IL 60208, USA.

An atomic structure model for a 25° [001] symmetric tilt grain boundary in SrTiO3 has been determined directly from experimental data with the use of high-resolution Z-contrast imaging coupled with electron energy loss spectroscopy. The derived model of the grain boundary was refined by bond-valence sum calculations and reveals candidate sites for dopant atoms in the boundary plane. These results show how the combined techniques can be used to deduce the atomic structure of defects and interfaces without recourse to preconceived structural models or image simulations.

Submitted on May 16, 1994
Accepted on August 22, 1994


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Aberration-corrected Z-contrast imaging of SrTiO3 dislocation cores.
R. F. Klie, W. Walkosz, G. Yang, and Y. Zhao (2009)
J. Electron Microsc. (Tokyo) 58, 185-191
   Abstract »    Full Text »    PDF »
Direct Observation of Dislocation Core Structures in CdTe/GaAs(001).
A. J. McGibbon, S. J. Pennycook, and J. E. Angelo (1995)
Science 269, 519-521
   Abstract »    PDF »


To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)