Short description: The OQMD is a database of DFT calculated thermodynamic and structural properties of materials

Project homepage: https://oqmd.org

Index Meta-Database URL: https://providers.optimade.org/index-metadbs/oqmd

Number of structures: 1,407,395

Databases served by this provider

• The OQMD (oqmd, default sub-database)

  https://oqmd.org/optimade

  The Open Quantum Materials Database endpoint

  Properties served by this database:

  By entry type (click to expand):

  Validation

  ValidationResults of validation Passed 22 / 52

  ❌ http://oqmd.org/optimade/v1/structures?page_limit=4&page_offset=12&response_fields=nsites%2Cassemblies%2Cchemical_formula_reduced%2Cdimension_types%2Cnperiodic_dimensions%2Clattice_vectors%2Celements_ratios%2Cchemical_formula_anonymous%2Cnelements%2Cstructure_features%2Ccartesian_site_positions%2Cimmutable_id%2Cspecies_at_sites%2Cchemical_formula_hill%2Celements%2Cspecies%2Clast_modified%2Cchemical_formula_descriptive
  
  

  ResponseError: HTTPSConnectionPool(host='oqmd.org', port=443): Read timed out. (read timeout=100)

  
  ❌ https://oqmd.org/optimade/v1
  
  

  ResponseError: Error when testing pagination: the response from `links->next` 'http://oqmd.org/optimade/v1/structures?page_limit=4&page_offset=12&response_fields=nsites%2Cassemblies%2Cchemical_formula_reduced%2Cdimension_types%2Cnperiodic_dimensions%2Clattice_vectors%2Celements_ratios%2Cchemical_formula_anonymous%2Cnelements%2Cstructure_features%2Ccartesian_site_positions%2Cimmutable_id%2Cspecies_at_sites%2Cchemical_formula_hill%2Celements%2Cspecies%2Clast_modified%2Cchemical_formula_descriptive' failed the previous test.

  
  ❌ https://oqmd.org/optimade/v1/structures?response_fields=lattice_vectors,dimension_types,elements_ratios&page_limit=1
  
  

  ResponseError: HTTPSConnectionPool(host='oqmd.org', port=443): Read timed out. (read timeout=100)

  
  ❌ https://oqmd.org/optimade/v1/structures?filter=id%20%3E=%20%224061145%22
  
  

  ResponseError: Request to 'structures?filter=id >= "4061145"' returned HTTP status code 502.
  Additional details from implementation:
  Could not parse response as JSON. Content type was 'text/html; charset=UTF-8'.

  
  ❌ https://oqmd.org/optimade/v1/structures?filter=id%20%3E=%20%224061145%22
  
  

  ResponseError: Unable to perform mandatory query 'id >= "4061145"', which raised the error: ResponseError: Request to 'structures?filter=id >= "4061145"' returned HTTP status code 502.
  Additional details from implementation:
  Could not parse response as JSON. Content type was 'text/html; charset=UTF-8'.

  
  ❌ https://oqmd.org/optimade/v1/structures?filter=chemical_formula_reduced%20%3E=%20%22Tm%22
  
  

  ResponseError: Request to 'structures?filter=chemical_formula_reduced >= "Tm"' returned HTTP status code 502.
  Additional details from implementation:
  Could not parse response as JSON. Content type was 'text/html; charset=UTF-8'.

  
  ❌ https://oqmd.org/optimade/v1/structures?filter=chemical_formula_reduced%20%3E=%20%22Tm%22
  
  

  ResponseError: Unable to perform mandatory query 'chemical_formula_reduced >= "Tm"', which raised the error: ResponseError: Request to 'structures?filter=chemical_formula_reduced >= "Tm"' returned HTTP status code 502.
  Additional details from implementation:
  Could not parse response as JSON. Content type was 'text/html; charset=UTF-8'.

  
  ❌ https://oqmd.org/optimade/v1/structures?filter=chemical_formula_anonymous%20%3E=%20%22A%22
  
  

  ResponseError: Request to 'structures?filter=chemical_formula_anonymous >= "A"' returned HTTP status code 502.
  Additional details from implementation:
  Could not parse response as JSON. Content type was 'text/html; charset=UTF-8'.

  
  ❌ https://oqmd.org/optimade/v1/structures?filter=chemical_formula_anonymous%20%3E=%20%22A%22
  
  

  ResponseError: Unable to perform mandatory query 'chemical_formula_anonymous >= "A"', which raised the error: ResponseError: Request to 'structures?filter=chemical_formula_anonymous >= "A"' returned HTTP status code 502.
  Additional details from implementation:
  Could not parse response as JSON. Content type was 'text/html; charset=UTF-8'.

  
  ❌ https://oqmd.org/optimade/v1/structures?filter=nelements%20%3E=%201
  
  

  ResponseError: Request to 'structures?filter=nelements >= 1' returned HTTP status code 502.
  Additional details from implementation:
  Could not parse response as JSON. Content type was 'text/html; charset=UTF-8'.

  
  ❌ https://oqmd.org/optimade/v1/structures?filter=nelements%20%3E=%201
  
  

  ResponseError: Unable to perform mandatory query 'nelements >= 1', which raised the error: ResponseError: Request to 'structures?filter=nelements >= 1' returned HTTP status code 502.
  Additional details from implementation:
  Could not parse response as JSON. Content type was 'text/html; charset=UTF-8'.

  
  ❌ https://oqmd.org/optimade/v1/structures?filter=elements%20HAS%20ANY%20%22Tm%22
  
  

  ResponseError: Request to 'structures?filter=elements HAS ANY "Tm"' returned HTTP status code 502.
  Additional details from implementation:
  Could not parse response as JSON. Content type was 'text/html; charset=UTF-8'.

  
  ❌ https://oqmd.org/optimade/v1/structures?filter=elements%20HAS%20ANY%20%22Tm%22
  
  

  ResponseError: Unable to perform mandatory query 'elements HAS ANY "Tm"', which raised the error: ResponseError: Request to 'structures?filter=elements HAS ANY "Tm"' returned HTTP status code 502.
  Additional details from implementation:
  Could not parse response as JSON. Content type was 'text/html; charset=UTF-8'.

  
  ❌ https://oqmd.org/optimade/v1/structures?filter=nsites%20%3E=%203
  
  

  ResponseError: Request to 'structures?filter=nsites >= 3' returned HTTP status code 502.
  Additional details from implementation:
  Could not parse response as JSON. Content type was 'text/html; charset=UTF-8'.

  
  ❌ https://oqmd.org/optimade/v1/structures?filter=nsites%20%3E=%203
  
  

  ResponseError: Unable to perform mandatory query 'nsites >= 3', which raised the error: ResponseError: Request to 'structures?filter=nsites >= 3' returned HTTP status code 502.
  Additional details from implementation:
  Could not parse response as JSON. Content type was 'text/html; charset=UTF-8'.

  
  ❌ https://oqmd.org/optimade/v1/structures?filter=nperiodic_dimensions%20%3E=%203
  
  

  ResponseError: Request to 'structures?filter=nperiodic_dimensions >= 3' returned HTTP status code 502.
  Additional details from implementation:
  Could not parse response as JSON. Content type was 'text/html; charset=UTF-8'.

  
  ❌ https://oqmd.org/optimade/v1/structures?filter=nperiodic_dimensions%20%3E=%203
  
  

  ResponseError: Unable to perform mandatory query 'nperiodic_dimensions >= 3', which raised the error: ResponseError: Request to 'structures?filter=nperiodic_dimensions >= 3' returned HTTP status code 502.
  Additional details from implementation:
  Could not parse response as JSON. Content type was 'text/html; charset=UTF-8'.

  
  ❌ https://oqmd.org/optimade/v1/structures?filter=structure_features%20HAS%20ANY%20%22assemblies%22,%22disorder%22,%22implicit_atoms%22,%22site_attachments%22
  
  

  ResponseError: Request to 'structures?filter=structure_features HAS ANY "assemblies","disorder","implicit_atoms","site_attachments"' returned HTTP status code 502.
  Additional details from implementation:
  Could not parse response as JSON. Content type was 'text/html; charset=UTF-8'.

  
  ❌ https://oqmd.org/optimade/v1/structures?filter=structure_features%20HAS%20ANY%20%22assemblies%22,%22disorder%22,%22implicit_atoms%22,%22site_attachments%22
  
  

  ResponseError: Unable to perform mandatory query 'structure_features HAS ANY "assemblies","disorder","implicit_atoms","site_attachments"', which raised the error: ResponseError: Request to 'structures?filter=structure_features HAS ANY "assemblies","disorder","implicit_atoms","site_attachments"' returned HTTP status code 502.
  Additional details from implementation:
  Could not parse response as JSON. Content type was 'text/html; charset=UTF-8'.

  
  ❌ https://oqmd.org/optimade/v1/structures?filter=chemical_formula_descriptive%20%3E=%20%22Tm%22
  
  

  ResponseError: Request to 'structures?filter=chemical_formula_descriptive >= "Tm"' returned HTTP status code 502.
  Additional details from implementation:
  Could not parse response as JSON. Content type was 'text/html; charset=UTF-8'.

  
  ❌ https://oqmd.org/optimade/v1/structures?filter=chemical_formula_descriptive%20%3E=%20%22Tm%22
  
  

  ResponseError: Unable to perform mandatory query 'chemical_formula_descriptive >= "Tm"', which raised the error: ResponseError: Request to 'structures?filter=chemical_formula_descriptive >= "Tm"' returned HTTP status code 502.
  Additional details from implementation:
  Could not parse response as JSON. Content type was 'text/html; charset=UTF-8'.

  
  ❌ https://oqmd.org/optimade/v1/;%20testing%20queries%20for%20structures-%3Espace_group_symmetry_operations_xyz
  
  

  ResponseError: Found unknown field 'space_group_symmetry_operations_xyz' that did not start with provider prefix '_oqmd_'

  
  ❌ https://oqmd.org/optimade/v1/;%20testing%20queries%20for%20structures-%3Espace_group_it_number
  
  

  ResponseError: Found unknown field 'space_group_it_number' that did not start with provider prefix '_oqmd_'

  
  ❌ https://oqmd.org/optimade/v1/;%20testing%20queries%20for%20structures-%3Espace_group_symbol_hall
  
  

  ResponseError: Found unknown field 'space_group_symbol_hall' that did not start with provider prefix '_oqmd_'

  
  ❌ https://oqmd.org/optimade/v1/;%20testing%20queries%20for%20structures-%3Espace_group_symbol_hermann_mauguin
  
  

  ResponseError: Found unknown field 'space_group_symbol_hermann_mauguin' that did not start with provider prefix '_oqmd_'

  
  ❌ https://oqmd.org/optimade/v1/;%20testing%20queries%20for%20structures-%3Espace_group_symbol_hermann_mauguin_extended
  
  

  ResponseError: Found unknown field 'space_group_symbol_hermann_mauguin_extended' that did not start with provider prefix '_oqmd_'

  
  ❌ https://oqmd.org/optimade/v1/structures?filter=_crazyprovider_field=2
  
  

  ResponseError: Request to 'structures?filter=_crazyprovider_field=2' returned HTTP status code 502.
  Additional details from implementation:
  Could not parse response as JSON. Content type was 'text/html; charset=UTF-8'.

  
  ❌ https://oqmd.org/optimade/v1/structures?filter=_crazyprovider_field=2
  
  

  ResponseError: Failed to handle field from unknown provider; should return without affecting filter results

  
  ❌ https://oqmd.org/optimade/v1/structures?filter=crazyfield%20=%202
  
  

  ResponseError: Request to 'structures?filter=crazyfield = 2' returned HTTP status code 502.
  Additional details from implementation:
  Could not parse response as JSON. Content type was 'text/html; charset=UTF-8'.

  
  ❌ https://oqmd.org/optimade/v1/links
  
  

  ResponseError: Request to 'links' returned HTTP status code 502.
  Additional details from implementation:
  Could not parse response as JSON. Content type was 'text/html; charset=UTF-8'.