16 citations · 19 across the 4 of their papers we have counts for
5 papers
Influence of dislocation density on the tribological response in oxides: case study on SrTiO3
Chukwudalu Okafor, Oliver Preuß, Thomas Chudoba +6
Most ceramics suffer from brittle surface damage and cracking when small particles slide across the surface under low load. Microscratching tests are a useful technique to mimic th…
Dislocation-point defect interaction on plasticity across the length scale in SrTiO3
Chukwudalu Okafor, Kohei Takahara, Svetlana Korneychuk +7
Point defect engineering is widely used to tailor the electronic and transport properties of complex oxides, yet its influence on dislocation plasticity remains poorly understood.…
Room-temperature dislocation plasticity in ceramics: Methods, Materials, and Mechanisms
Alexander Frisch, Chukwudalu Okafor, Oliver Preuß +5
Dislocation-mediated plastic deformation in ceramic materials has sparked renewed research interest due to the technological potential of dislocations. Despite the long research hi…
Coupled electromigration-nanoindentation study on dislocation nucleation in SrTiO3
Chukwudalu Okafor, Ahmad Sayyadi-Shahraki, Sebastian Bruns +5
Modern functional oxides are mainly engineered by doping, essentially by tuning the defect chemistry. Recent studies suggest that dislocations offer a new perspective for enhancing…
Room-temperature bulk plasticity and tunable dislocation densities in KTaO3
Xufei Fang, Jiawen Zhang, Alexander Frisch +4
We report room-temperature bulk plasticity mediated by dislocations in single-crystal cubic KTaO3, contrasting the conventional knowledge that single-crystal KTaO3 is susceptible t…