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Unraveling Hidden Order and Dynamics in a Heterogeneous Ferroelectric System Using Machine Learning

    Abhijeet Dhakane | Oak Ridge National Laboratory
    P. Ganesh | Oak Ridge National Laboratory
    Nikhil Sivadas | Oak Ridge National Laboratory
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Description

We uploaded two batches of datasets: Batch-a) Equilibrium dynamics at a constant temperature at zero electric-field, with one trajectory each for 4-different defect structures (i.e. SETs 1 to 4). Each trajectory has a time-step of 0.25 fs, and is run for 7775000 time-steps, with snapshots written out every 4 time-steps (i.e. every 1fs); and Batch-b) Non-Equilibrium dynamics at a constant temperature with the same 0.25 fs time-step, but data dumped every 500 times-steps (i.e. every 125fs) for each of the SETs. The total trajectory of each defect structure (i.e. each SETs 1 to 4) is 2800000 time-steps (5600 snapshots), with stepping of electric-field by 0.01 V/Ã…, after every 100,000 time-steps (i.e. every 200 snapshots), from E=0 to E=0.05 V/Ã… to E = -0.05 V/Ã… to E=0.05 V/Ã….

Funding Information

DOE Contract Number

AC05-00OR22725

Originating Research Organization

Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization

Office of Science (SC)

Details

Release Date

April 5, 2021

Subject

36 MATERIALS SCIENCE

Keywords

Ferroelectrics, Molecular Dynamics

Dataset

Dataset Type

AS Animations/Simulations

Software

Paraview

Cite This Dataset:

Dhakane, A., Ganesh, P., Sivadas, N. (2021). Unraveling Hidden Order and Dynamics in a Heterogeneous Ferroelectric System Using Machine Learning . Oak Ridge National Laboratory. https://doi.org/10.13139/OLCF/1773493.

Acknowledgements

This research used resources of the Oak Ridge Leadership Computing Facility at the Oak Ridge National Laboratory, which is supported by the Advanced Scientific Computing Research programs in the Office of Science of the U.S. Department of Energy under Contract No. DE-AC05-00OR22725.