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Databases & Resources
Materials structures, properties, electrochemistry and spectral references for your research.
COD structure search
Find structures by element, inspect unit cells and 3D models, and download CIF files. An account is required for searches and downloads.
RESEARCH DIRECTORY
Materials & crystal structures
Materials Project
Computed crystal structures and materials properties for exploring candidate materials.
Access & citation details
Account may be required · browser verification
Crystallography Open Database (COD)
Open crystal structure records and CIF files for structural research.
Access & citation details
Public access
Open Quantum Materials Database (OQMD)
DFT-calculated crystal structures, formation energies and phase stability, with tools for phase diagrams and composition searches.
Access & citation details
Public data · CC BY 4.0 · website unavailable during this review
NIST JARVIS
Computed materials properties including formation energies, band structures, elastic tensors and dielectric properties, with datasets for two-dimensional materials.
Access & citation details
Free registration · database and web apps require an account · follow dataset-specific citation terms
C2DB · Computational 2D Materials Database
First-principles structures and stability, electronic, magnetic and optical properties of two-dimensional materials; filter by composition, band gap and other properties.
Access & citation details
Public search · CC BY-SA 4.0 · full dataset available on request · cite the original papers
AFLOW · Materials Discovery
High-throughput crystal structures and calculated formation energies, electronic, elastic and thermal properties, with structure prototypes and phase-stability tools.
Access & citation details
Public search and API · follow the provider's data-use and citation requirements
NIMS MatNavi
A gateway to polymer, inorganic and metallic materials, phase diagrams, diffusion, creep, fatigue and corrosion data.
Access & citation details
Free MatNavi service requires a DICE account, an institutional email with an approved domain, and a MatNavi usage application. Scraping and mass downloading are prohibited. AtomWork-Adv is a separate paid service.
CCDC · Access Structures
Find, view and download published CSD and ICSD crystal structures by deposition number, DOI or publication details.
Access & citation details
Basic Access Structures searches and individual structure retrieval are free without registration; accept the download conditions and cite the original publication. Advanced CSD and ICSD products require separate licences.
Existing resources reviewed: 2026-10-11 / 17; new materials properties, electrochemistry and porous-material resources reviewed: 2026-10-18. Third-party availability and access requirements may change.