Mat-252K-SFT is a materials-science instruction-tuning dataset released with
the MatBrain project. It contains 252,234 chat-formatted examples covering
analytical property reasoning and crystal-structure design.
The dataset is distributed as eight JSONL training shards under data/.
Each training row contains:
{
"mp_id": "mp-...",
"messages": [
{"role": "user", "content": "..."},
{"role": "assistant", "content": "..."}
]… See the full description on the dataset page:
https://huggingface.co/datasets/MAIC-SIAT/Mat-252K-SFT.