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000887812 1001_ $$00000-0002-3887-0111$$aFang, Xufei$$b0$$eCorresponding author
000887812 245__ $$aNanoscale to microscale reversal in room-temperature plasticity in SrTiO3 by tuning defect concentration
000887812 260__ $$aAmsterdam [u.a.]$$bElsevier Science$$c2020
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000887812 520__ $$aIncipient room-temperature plastic deformation in single-crystal SrTiO3 at the nanoscale and the microscale is contrasted by applying a scale-dependent indentation technique. Using nanoindentation pop-in, nanoindentation creep, and an evaluation of dislocation spacing via etch pit study, we demonstrate a reversal of yield stress for crystals with different vacancy concentrations and pre-existing dislocation densities. A competing mechanism between dislocation nucleation and dislocation motion on crystal plasticity at different length scales is highlighted. This finding enables us to complete the understanding of dislocation-mediated plasticity for ceramic oxides at the nanoscale as compared to the microscale and macroscale.
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000887812 7001_ $$0P:(DE-HGF)0$$aDing, Kuan$$b1
000887812 7001_ $$0P:(DE-HGF)0$$aJanocha, Stephan$$b2
000887812 7001_ $$0P:(DE-HGF)0$$aMinnert, Christian$$b3
000887812 7001_ $$0P:(DE-Juel1)185039$$aRheinheimer, Wolfgang$$b4$$ufzj
000887812 7001_ $$0P:(DE-HGF)0$$aFrömling, Till$$b5
000887812 7001_ $$00000-0002-9246-6398$$aDurst, Karsten$$b6
000887812 7001_ $$00000-0002-4324-1512$$aNakamura, Atsutomo$$b7
000887812 7001_ $$0P:(DE-HGF)0$$aRödel, Jürgen$$b8
000887812 773__ $$0PERI:(DE-600)2015843-9$$a10.1016/j.scriptamat.2020.07.033$$gVol. 188, p. 228 - 232$$p228 - 232$$tScripta materialia$$v188$$x1359-6462$$y2020
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