{
  "counts": {
    "above_hull": 12,
    "entries": 125,
    "intervals": 2,
    "vertices": 3
  },
  "elements": [
    "C",
    "W"
  ],
  "flags": [
    "has_intermediate_compounds",
    "mp_agreement_not_comparable"
  ],
  "isotherms": [
    {
      "intervals": [
        {
          "intercept": 0.0,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-ref-C",
            "x": 0.0
          },
          "mu_a_rel": 0.0,
          "mu_b_rel": -0.251317297500002,
          "right": {
            "phase": "oqmd-3084",
            "x": 0.5
          },
          "slope": -0.251317297500002,
          "x_hi": 0.5,
          "x_lo": 0.0
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        {
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          "mu_a_rel": -0.251317297500002,
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          "right": {
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            "x": 1.0
          },
          "slope": 0.251317297500002,
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      ],
      "temperature_K": 0.0,
      "vertices": [
        {
          "collinear": false,
          "degenerate": [],
          "energy": 0.0,
          "energy_per_atom": -9.217076,
          "entries_at_x": 69,
          "formula": "C",
          "nsites": null,
          "phase": "oqmd-ref-C",
          "phase_kind": "structure",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.0
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.125658648750001,
          "energy_per_atom": -11.21430012,
          "entries_at_x": 11,
          "formula": "C1 W1",
          "nsites": 2,
          "phase": "oqmd-3084",
          "phase_kind": "structure",
          "spacegroup_number": 187,
          "spacegroup_symbol": "P-6m2",
          "theoretical": false,
          "x": 0.5
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": 0.0,
          "energy_per_atom": -12.960207,
          "entries_at_x": 24,
          "formula": "W",
          "nsites": null,
          "phase": "oqmd-ref-W",
          "phase_kind": "structure",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 1.0
        }
      ]
    }
  ],
  "mp_agreement": {
    "comparable": false,
    "comparable_note": "is_stable is derived by the extraction, not an upstream flag, so comparing it against a hull recomputed from the same energies tests the derivation rather than the data",
    "max_abs_delta_energy_above_hull": 4.188627222845298e-10,
    "only_mp_stable": [],
    "only_ours_stable": [],
    "stable_sets_match": true
  },
  "provenance": {
    "above_hull_window_eV": 0.05,
    "builder_version": 1,
    "collinear_tol": 1e-12,
    "correction_model": "OQMD fit-partial ('standard' fit, applied upstream by OQMD; none added)",
    "degenerate_tol": 1e-06,
    "entry_pool": "all_nondeprecated",
    "is_stable_source": "derived",
    "observed_at": "2026-09-05T17:02:03Z",
    "snapshot_scope_elements": [],
    "snapshot_scope_kind": "full",
    "snapshot_sha256": "2a9393262c52ec35600424236c352a4cdb3291c8b25c1c6588f5e62abe8e0d8d",
    "source_release": "qmdb_v1_8_022026",
    "stability_tol": 0.0001,
    "thermo_type": "standard",
    "upstream_energy_corrections": "OQMD 'standard' fit (fit-partial of Kirklin et al. 2015): elemental reference energies of a subset of elements fitted to experimental formation enthalpies, applied by OQMD"
  },
  "reference": {
    "kind": "dft_fitted_elemental_reference_0K",
    "per": "atom",
    "temperature_K": 0.0,
    "units": "eV/atom"
  },
  "schema_version": 1,
  "system_id": "C-W",
  "x_element": "W"
}