Structural width of low-angle grain boundaries in olivine

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Authors:Ricoult, D. L.; Kohlstedt, D. L.
Author Affiliations:Primary:
Cornell Univ. Dept. Mater. Sci., Ithaca, NY 14853, United States
Volume Title:Physics and Chemistry of Minerals
Source:Physics and Chemistry of Minerals, 9(3-4), p.133-138. Publisher: Springer-Verlag, Berlin-New York, Federal Republic of Germany. ISSN: 0342-1791
Publication Date:1983
Note:In English. 24 refs.; illus. incl. 1 table
Summary:Electron diffraction and imaging techniques were used to examine the structure and thickness of low-angle grain boundaries in olivine. For edge-on grain boundaries, a periodic array of dislocations in a boundary gives rise to sets of periodic rods of diffracted intensity that are recorded as streaks in the diffraction pattern. The length of these streaks provides a measure of the structural width of a boundary. For olivine, the structural width of a boundary with a given dislocation spacing is 3-4 times smaller than that in metals where the boundary width is approximately equal to the spacing between dislocations in the boundary. [P.Br.]
Subjects:Creep; Crystal dislocations; Diffusion; Electron diffraction analysis; Experimental studies; Geochemistry; Geophysics; Grain boundaries; Microstructure; Nesosilicates; Olivine; Olivine group; Orthosilicates; Silicates; TEM data; Thickness
Abstract Numbers:83M/4204
Record ID:1986036451
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom, Reference includes data from PASCAL, Institute de l'Information Scientifique et Technique
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