{
  "counts": {
    "above_hull": 0,
    "entries": 4,
    "intervals": 3,
    "vertices": 4
  },
  "elements": [
    "CO",
    "W"
  ],
  "flags": [
    "has_intermediate_phases",
    "solution_phases"
  ],
  "isotherms": [
    {
      "element_reference": {
        "CO": {
          "energy": -8956.44934924779,
          "phase": "HCP_A3"
        },
        "W": {
          "energy": -9724.926766870625,
          "phase": "BCC_A2"
        }
      },
      "intervals": [
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                0.0,
                23.925020698905687,
                0.19981095032808582,
                -0.0014604517725125277
              ]
            ],
            "knots": [
              0.0,
              0.0020727508871473043
            ],
            "max_abs_error": 0.00015560505519651713
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                0.0,
                -0.016970652840196648,
                6.491960922639858e-05,
                -1.615091655519929e-05
              ]
            ],
            "knots": [
              0.0,
              0.0020727508871473043
            ],
            "max_abs_error": 2.326704819993579e-06
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              0.0,
              28.98482084358798,
              0.18045516825390706,
              0.003354944201657162
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.0,
            0.0020727508871473043
          ],
          "max_abs_error": 0.0005381020577370776,
          "phase": "HCP_A3",
          "x_hi": 0.0020727508871473043,
          "x_lo": 0.0
        },
        {
          "enthalpy": {
            "intercept": 20.661407809829107,
            "slope": 1670.2264652733086
          },
          "entropy": {
            "intercept": 0.08717814954559613,
            "slope": 9.456766808458916
          },
          "intercept": -5.330757477192822,
          "kind": "two_phase",
          "left": {
            "phase": "HCP_A3",
            "x": 0.0020727508871473043
          },
          "mu_a_rel": -5.330757477192822,
          "mu_b_rel": -1154.639316145905,
          "right": {
            "phase": "CO7W6_D85",
            "x": 0.46153846153846156
          },
          "slope": -1149.3085586687123,
          "x_hi": 0.46153846153846156,
          "x_lo": 0.0020727508871473043
        },
        {
          "enthalpy": {
            "intercept": 1469.9938704525186,
            "slope": -1469.9938704525186
          },
          "entropy": {
            "intercept": 8.267702399263749,
            "slope": -8.267702399263749
          },
          "intercept": -995.0215998879688,
          "kind": "two_phase",
          "left": {
            "phase": "CO7W6_D85",
            "x": 0.46153846153846156
          },
          "mu_a_rel": -995.0215998879688,
          "mu_b_rel": 0.0,
          "right": {
            "phase": "BCC_A2",
            "x": 1.0
          },
          "slope": 995.0215998879688,
          "x_hi": 1.0,
          "x_lo": 0.46153846153846156
        }
      ],
      "temperature_K": 298.15,
      "vertices": [
        {
          "collinear": false,
          "degenerate": [],
          "energy": 0.0,
          "energy_per_atom": 0.0,
          "enthalpy": 0.0,
          "entries_at_x": 1,
          "entropy": 0.0,
          "formula": "",
          "nsites": null,
          "phase": "HCP_A3",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.0
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -7.712987811779385,
          "energy_per_atom": -7.712987811779385,
          "enthalpy": 24.123371197461264,
          "entries_at_x": 1,
          "entropy": 0.10677967133737454,
          "formula": "",
          "nsites": null,
          "phase": "HCP_A3",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.0020727508871473043
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -535.780861478137,
          "energy_per_atom": -535.780861478137,
          "enthalpy": 791.5351610128946,
          "entries_at_x": 1,
          "entropy": 4.451839753449711,
          "formula": "",
          "nsites": null,
          "phase": "CO7W6_D85",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.46153846153846156
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": 0.0,
          "energy_per_atom": 0.0,
          "enthalpy": 0.0,
          "entries_at_x": 1,
          "entropy": 0.0,
          "formula": "",
          "nsites": null,
          "phase": "BCC_A2",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 1.0
        }
      ]
    }
  ],
  "mp_agreement": {
    "comparable": false,
    "comparable_note": "CALPHAD isotherms have no upstream stability flag to compare against",
    "max_abs_delta_energy_above_hull": 0.0,
    "only_mp_stable": [],
    "only_ours_stable": [],
    "stable_sets_match": true
  },
  "provenance": {
    "assessment": "CoW-85Gab",
    "builder_version": 1,
    "engine": {
      "numpy": "2.5.1",
      "pycalphad": "0.11.2",
      "python": "3.13.15"
    },
    "fit_tol": 1.0,
    "observed_at": "2026-09-03T00:27:29Z",
    "phase_families": {},
    "sample_conditions": {
      "endpoint_tol": 1.0,
      "fit_samples": 65,
      "order_tol": 0.0001,
      "pressure_Pa": 101325.0,
      "redundant_tol": 1.0,
      "refine_tol": 1e-07,
      "step": 0.002,
      "temperature_K": 298.15
    },
    "source_path": "databases/sgte-binary/CoW-85Gab.tdb",
    "source_sha256": "e50d980889fc6e3e61b8a1a269a99d723dfa55bf047283ce978f9c4b81170890"
  },
  "reference": {
    "kind": "calphad_formation_T",
    "per": "mole_atoms",
    "temperature_K": 298.15,
    "units": "J/mol-atoms"
  },
  "schema_version": 1,
  "system_id": "CO-W",
  "x_element": "W"
}