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Possible Electrochemical Origin of Ferroelectricity in HfO2 Thin Films
Maya D. Glinchuk, Anna N. Morozovska, Yunseok Kim +1
Recent observations of unusual ferroelectricity in thin films of HfO_2 and related materials have attracted broad interest to the materials and led to the emergence of a number of…
Intrinsic structural instabilities of domain walls driven by gradient couplings: meandering anferrodistortive-ferroelectric domain walls in BiFeO3
Eugene A. Eliseev, Anna N. Morozovska, Christopher T. Nelson +1
Using Landau-Ginzburg-Devonshire approach, we predict the intrinsic instability of the ferroelectric-ferroelastic domain walls in the multiferroic BiFeO3 emerging from the interpla…
Tracking atomic structure evolution during directed electron beam induced Si-atom motion in graphene via deep machine learning
Maxim Ziatdinov, Stephen Jesse, Bobby G. Sumpter +2
Using electron beam manipulation, we enable deterministic motion of individual Si atoms in graphene along predefined trajectories. Structural evolution during the dopant motion was…
Building and exploring libraries of atomic defects in graphene: scanning transmission electron and scanning tunneling microscopy study
Maxim Ziatdinov, Ondrej Dyck, Bobby G. Sumpter +3
Population and distribution of defects is one of the primary parameters controlling materials functionality, are often non-ergodic and strongly dependent on synthesis history, and…
Learning from imperfections: constructing phase diagrams from atomic imaging of fluctuations
Lukas Vlcek, Maxim A. Ziatdinov, Alexander Tselev +3
Materials characterization and property measurements are a cornerstone of material science, providing feedback from synthesis to applications. Traditionally, a single sample is use…
Compressed Sensing of Scanning Transmission Electron Microscopy (STEM) on Non-Rectangular Scans
Xin Li, Ondrej Dyck, Sergei V. Kalinin +1
Scanning Transmission Electron Microscopy (STEM) has become the main stay for materials characterization on atomic level, with applications ranging from visualization of localized…