Abstract
We have studied the atomistic structure of a σ3 (111) grain boundary in strontium titanate by high‐resolution transmission electron microscopy (HRTEM). Quantitative evaluation of HRTEM images reveals that shear stresses, which may originate from processing or external loading, have an important effect on the translation state of the two adjacent grains and on the ion positions at the grain boundary. While under low shear stress the boundary exhibits mirror symmetry with respect to the boundary plane and a comparatively large free volume, high shear stress transforms the structure to a “lock‐in” configuration, which has no mirror symmetry and a smaller excess volume. These results suggest that internal or external stresses may significantly alter the charge transport properties of SrTiO3.
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Dates
Type | When |
---|---|
Created | 15 years ago (July 24, 2010, 2:03 p.m.) |
Deposited | 1 year, 9 months ago (Nov. 22, 2023, 11:52 p.m.) |
Indexed | 2 months, 3 weeks ago (May 27, 2025, 11:03 a.m.) |
Issued | 28 years, 1 month ago (July 1, 1997) |
Published | 28 years, 1 month ago (July 1, 1997) |
Published Online | 20 years, 7 months ago (Jan. 20, 2005) |
Published Print | 28 years, 1 month ago (July 1, 1997) |
@article{Kienzle_1997, title={Effect of Shear Stress on the Atomistic Structure of a Grain Boundary in Strontium Titanate}, volume={80}, ISSN={1551-2916}, url={http://dx.doi.org/10.1111/j.1151-2916.1997.tb03032.x}, DOI={10.1111/j.1151-2916.1997.tb03032.x}, number={7}, journal={Journal of the American Ceramic Society}, publisher={Wiley}, author={Kienzle, Oliver and Ernst, Frank}, year={1997}, month=jul, pages={1639–1644} }