0.5 wt% Nb doping in SrTiO3 suppresses room-temperature plasticity across scales by raising yield stress ~50%, increasing pop-in and friction stresses, slowing creep, and producing spaced slip traces, with Sr vacancies identified as the main hindrance versus oxygen vacancies in Fe-doped samples.
De Souza, Oxygen Diffusion in SrTiO3 and Related Perovskite Oxides, Advanced Functional Materials 25(40) (2015) 6326-6342
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Dislocation-point defect interaction on plasticity across the length scale in SrTiO3
0.5 wt% Nb doping in SrTiO3 suppresses room-temperature plasticity across scales by raising yield stress ~50%, increasing pop-in and friction stresses, slowing creep, and producing spaced slip traces, with Sr vacancies identified as the main hindrance versus oxygen vacancies in Fe-doped samples.