This title appears in the Scientific Report :
2020
Please use the identifier:
http://dx.doi.org/10.1016/j.scriptamat.2020.07.033 in citations.
Please use the identifier: http://hdl.handle.net/2128/26464 in citations.
Nanoscale to microscale reversal in room-temperature plasticity in SrTiO3 by tuning defect concentration
Nanoscale to microscale reversal in room-temperature plasticity in SrTiO3 by tuning defect concentration
Incipient room-temperature plastic deformation in single-crystal SrTiO3 at the nanoscale and the microscale is contrasted by applying a scale-dependent indentation technique. Using nanoindentation pop-in, nanoindentation creep, and an evaluation of dislocation spacing via etch pit study, we demonstr...
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Personal Name(s): | Fang, Xufei (Corresponding author) |
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Ding, Kuan / Janocha, Stephan / Minnert, Christian / Rheinheimer, Wolfgang / Frömling, Till / Durst, Karsten / Nakamura, Atsutomo / Rödel, Jürgen | |
Contributing Institute: |
Werkstoffsynthese und Herstellungsverfahren; IEK-1 |
Published in: | Scripta materialia, 188 (2020) S. 228 - 232 |
Imprint: |
Amsterdam [u.a.]
Elsevier Science
2020
|
DOI: |
10.1016/j.scriptamat.2020.07.033 |
Document Type: |
Journal Article |
Research Program: |
Addenda |
Link: |
Get full text Published on 2020-07-28. Available in OpenAccess from 2022-07-28. |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/26464 in citations.
Incipient room-temperature plastic deformation in single-crystal SrTiO3 at the nanoscale and the microscale is contrasted by applying a scale-dependent indentation technique. Using nanoindentation pop-in, nanoindentation creep, and an evaluation of dislocation spacing via etch pit study, we demonstrate a reversal of yield stress for crystals with different vacancy concentrations and pre-existing dislocation densities. A competing mechanism between dislocation nucleation and dislocation motion on crystal plasticity at different length scales is highlighted. This finding enables us to complete the understanding of dislocation-mediated plasticity for ceramic oxides at the nanoscale as compared to the microscale and macroscale. |