Dataset

Silica_Allegro_15000K




Species content of dataset


Name :
Silica_Allegro_15000K
Authors :
Henrik Andersen Sveinsson
Description :
DFT reference dataset for an Allegro machine-learned interatomic potential for silica (SiO2) valid up to 15000 K, spanning the high-temperature melt, melt-quench amorphization, and mechanical-deformation regimes. The configurations were selected by HYAL active learning - an Allegro/LAMMPS sampler proposing structures of alpha-quartz, beta-cristobalite, coesite, and amorphous silica across an initial set and melt, high-temperature melt, melt-quench, and mechanical shear/tension sampling stages - and each was then labeled with a single-point VASP calculation (roughly 2780 successfully labeled configurations with total energies, atomic forces, and stresses). Calculations used VASP 6.3.2 with the r2SCAN meta-GGA functional (PAW_PBE potentials), a 1000 eV plane-wave cutoff, an electronic convergence of 1e-6 eV, Gaussian smearing (ISMEAR=0, SIGMA=0.1 eV), and Gamma-point Brillouin-zone sampling; each r2SCAN calculation was preceded by a PBE pre-convergence step. The resulting Allegro potential was used to study dynamic fracture and energy dissipation in silica glass. Configuration sets group the data by silica system (quartz, cristobalite, coesite, amorphous).
Cite As :
Sveinsson, H. A. "Silica Allegro 15000K." ColabFit, 2026. https://doi.org/None.
ColabFit ID :
Date Added :
2026-06-03
License :
CC-BY-4.0
Downloads :
0
Num. Configurations :
2,781
Num. Atoms :
558,432
Calculated Property Types :
atomic_forces cauchy_stress energy
Elements :
O (66.67%) Si (33.33%)
Methods :
DFT-r2SCAN
Software :
VASP 6.3.2
Spec File :
Configuration Sets by Name :
Configuration Sets by ID :
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