Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1507151 | Solid State Sciences | 2006 | 11 Pages |
Abstract
Nanoindentation of (100), (110) and (111) oriented SrTiO3 single crystals at room temperature led to the appearance of slip bands and simultaneously to discontinuities in the force-penetration curve. Combining both enabled a critical shear stress of the order of 10 GPa to be evaluated which indicates the onset of dislocation generation. Transmission electron microscopy proved that dislocations were nucleated underneath the indenter. The difference between macroscopically and nanoscopically stressed volumes arises due to the availability of mobile dislocations in the former case and due a lack of such dislocations in the latter.
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Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Peter Paufler, Beate Bergk, Marianne Reibold, André Belger, Nora Pätzke, Dirk C. Meyer,