17 papers
Oxygen Vacancies at Dislocation Core Modulate Plasticity in Strontium Titanate
Min-Chul Kang, Chunxu Yan, Alexander Frisch +3
Dislocation core chemistry in oxides critically influences mechanical behavior and functionality; yet the evolution of core chemistry during the dislocation motion in them has not…
Tunable dislocations overcome mechano-functional tradeoff in perovskite oxides
Jiawen Zhang, Wenjun Lu, Xufei Fang
Recent advancements in dislocation engineering are reshaping the traditional view towards ceramics being brittle. Here, we use KTaO3 (KTO), a perovskite oxide that is newly discove…
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.…
A data-driven quest for room-temperature bulk plastically deformable ceramics
Iwo SÅodczyk, Alexander Frisch, Xufei Fang +2
The growing number of ceramics exhibiting bulk plasticity at room temperature has renewed interest in revisiting plastic deformation and dislocation-mediated mechanical and functio…
Scale-bridging dislocation plasticity in MgO at room temperature
Jiawen Zhang, Zhangtao Li, Yuwei Zhang +7
Dislocations in ceramics have recently gained renewed research interest, in contrast to the traditional belief that ceramics are inherently brittle. Understanding dislocation mecha…
Dislocation response to electric fields in strontium titanate: A mesoscale indentation study
Alexander Frisch, Daniel Isaia, Oliver Preuà +1
Dislocations in perovskite oxides have drawn increasing research interest due to their potential of tuning functional properties of electroceramics. Open questions remain regarding…