---
configs:
- config_name: default
  data_files: "co/*.parquet"
- config_name: info
  data_files: "ds.parquet"
- config_name: configuration_sets
  data_files: "cs/*.parquet"
- config_name: config_set_mapping
  data_files: "cs_co_map/*.parquet"
license: cc-by-4.0
tags:
- molecular dynamics
- mlip
- interatomic potential
pretty_name: Ta PRM2019
---
### <details><summary>Cite this dataset </summary>Byggmästar, J., Nordlund, K., and Djurabekova, F. _Ta PRM2019_. ColabFit, 2023. https://doi.org/10.60732/43837a12</details>  
#### This dataset has been curated and formatted for the ColabFit Exchange  
#### This dataset is also available on the ColabFit Exchange:  
https://materials.colabfit.org/id/DS_40zw467dnc6d_0  
#### Visit the ColabFit Exchange to search additional datasets by author, description, element content and more.  
https://materials.colabfit.org
<br><hr>  
# Dataset  Name  
Ta PRM2019  
### Description  
This dataset was designed to enable machine-learning of Ta elastic, thermal, and defect properties, as well as surface energetics, melting, and the structure of the liquid phase. The dataset was constructed by starting with the dataset from J. Byggmästar et al., Phys. Rev. B 100, 144105 (2019), then rescaling all of the configurations to the correct lattice spacing and adding in gamma surface configurations.  
### Dataset authors  
Jesper Byggmästar, Kai Nordlund, Flyura Djurabekova  
### Publication  
https://doi.org/10.1103/PhysRevMaterials.4.093802  
### Original data link  
https://gitlab.com/acclab/gap-data/-/tree/master  
### License  
CC-BY-4.0  
### Number of unique molecular configurations  
3773  
### Number of atoms  
45385  
### Elements included  
Ta  
### Properties included  
energy, atomic forces, cauchy stress  
<br>
<hr>  

# Usage  
- `ds.parquet` : Aggregated dataset information.  
- `co/` directory: Configuration rows each include a structure, calculated properties, and metadata.  
- `cs/` directory : Configuration sets are subsets of configurations grouped by some common characteristic. If `cs/` does not exist, no configurations sets have been defined for this dataset.  
- `cs_co_map/` directory : The mapping of configurations to configuration sets (if defined).  
<br>
#### ColabFit Exchange documentation includes descriptions of content and example code for parsing parquet files:  
- [Parquet parsing: example code](https://materials.colabfit.org/docs/how_to_use_parquet)  
- [Dataset info schema](https://materials.colabfit.org/docs/dataset_schema)  
- [Configuration schema](https://materials.colabfit.org/docs/configuration_schema)  
- [Configuration set schema](https://materials.colabfit.org/docs/configuration_set_schema)  
- [Configuration set to configuration mapping schema](https://materials.colabfit.org/docs/cs_co_mapping_schema)