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cond-mat.mtrl-sci2026
Accurate Nanoscale Mapping of Electric Fields across Random Grain Boundaries in Polycrystalline Oxides Using Precession-Assisted 4D-STEM
Sangjun Kang, Hyeyoung Cho, Maximilian Töllner +12
Space charge layers (SCLs) at grain boundaries play a crucial role in modulating local electric fields and influencing the functional properties of materials, such as oxygen vacanc…
cond-mat.mtrl-sci2026
Impact of charge transition levels on grain boundary properties in acceptor doped oxide ceramics: A phase-field study
Kai Wang, Sangjun Kang, Mahmoud Serour +8
Advanced doping strategies enable oxide ceramic functionalities by tailoring bulk defect chemistry and space-charge-layer (SCL) behavior at interfaces. Charge transition levels (CT…
cond-mat.mtrl-sci2024
Simultaneous mapping of magnetic and atomic structure for direct visualization of nanoscale magnetoelastic coupling
Sangjun Kang, Maximilian Töllner, Di Wang +7
Achieving a correlative measurement of both magnetic and atomic structures at the nanoscale is imperative to understand the fundamental magnetism of matters and for fostering the d…