{
  "counts": {
    "above_hull": 0,
    "entries": 8,
    "intervals": 7,
    "vertices": 8
  },
  "elements": [
    "CO",
    "PT"
  ],
  "flags": [
    "has_intermediate_phases",
    "solution_phases"
  ],
  "isotherms": [
    {
      "element_reference": {
        "CO": {
          "energy": -8956.449410454074,
          "phase": "HCP_A3"
        },
        "PT": {
          "energy": -12412.221327946247,
          "phase": "FCC_A1"
        }
      },
      "intervals": [
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                0.0,
                -4323.148749018644,
                715.0422017011083,
                -46.69903114320414
              ],
              [
                -3654.805578460739,
                -3033.17182475198,
                573.4115832270925,
                -32.74242459074935
              ],
              [
                -6147.308244576376,
                -1984.5849844906759,
                474.31671114604933,
                -20.65182944266553
              ],
              [
                -7678.228347363665,
                -1097.9143595414355,
                412.0897989999319,
                -10.720195266181463
              ]
            ],
            "knots": [
              0.0,
              0.10085623777119927,
              0.20171247454239855,
              0.30256871131359786,
              0.4034249388942035
            ],
            "max_abs_error": 0.22605232008891107
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                0.0,
                2.2574027820936555,
                -1.0422192010135065,
                0.06388320344014009
              ]
            ],
            "knots": [
              0.0,
              0.4034249388942035
            ],
            "max_abs_error": 0.0018610051203045153
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              0.0,
              -4491.4099139735035,
              733.9021461297293,
              -46.760095713844294
            ],
            [
              -3804.267863557618,
              -3163.8961800524166,
              592.0596611508536,
              -32.97747873348999
            ],
            [
              -6409.08186119267,
              -2078.718273720863,
              492.2438005509423,
              -21.010424217173977
            ],
            [
              -8016.566758579763,
              -1157.269146174546,
              428.9307338839444,
              -11.221694105717688
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.0,
            0.10085623777119927,
            0.20171247454239855,
            0.30256871131359786,
            0.4034249388942035
          ],
          "max_abs_error": 0.22262018333231026,
          "phase": "HCP_A3",
          "x_hi": 0.4034249388942035,
          "x_lo": 0.0
        },
        {
          "enthalpy": {
            "intercept": -8263.807221483636,
            "slope": -275.0595488515822
          },
          "entropy": {
            "intercept": 1.4767542765096424,
            "slope": 13.408655673968836
          },
          "intercept": -8704.101509024995,
          "kind": "two_phase",
          "left": {
            "phase": "HCP_A3",
            "x": 0.4034249388942035
          },
          "mu_a_rel": -8704.101509024995,
          "mu_b_rel": -12976.951747070369,
          "right": {
            "phase": "COPT_L10",
            "x": 0.44180528911502454
          },
          "slope": -4272.850238045375,
          "x_hi": 0.44180528911502454,
          "x_lo": 0.4034249388942035
        },
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                -8385.329984987857,
                -697.6572756838983,
                1463.7163647326352,
                4.099506715571806
              ]
            ],
            "knots": [
              0.44180528911502454,
              0.6308860450430972
            ],
            "max_abs_error": 0.6771083023013489
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                1.694066716337601,
                0.0021360010490943295,
                -0.18007880976475094,
                0.030360555952886947
              ]
            ],
            "knots": [
              0.44180528911502454,
              0.6308860450430972
            ],
            "max_abs_error": 0.000690604158890773
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              -8890.415976463915,
              -698.2941243973568,
              1517.4068618655929,
              -4.952493042712376
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.44180528911502454,
            0.6308860450430972
          ],
          "max_abs_error": 0.47657197393345996,
          "phase": "COPT_L10",
          "x_hi": 0.6308860450430972,
          "x_lo": 0.44180528911502454
        },
        {
          "enthalpy": {
            "intercept": -14848.570083979172,
            "slope": 11465.459969496542
          },
          "entropy": {
            "intercept": 11.553865299817772,
            "slope": -7.184266222040735
          },
          "intercept": -18293.355023119948,
          "kind": "two_phase",
          "left": {
            "phase": "COPT_L10",
            "x": 0.6308860450430972
          },
          "mu_a_rel": -18293.355023119948,
          "mu_b_rel": -4685.906079521796,
          "right": {
            "phase": "COPT3_L12",
            "x": 0.6979277891811939
          },
          "slope": 13607.448943598152,
          "x_hi": 0.6979277891811939,
          "x_lo": 0.6308860450430972
        },
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                -6846.506955522971,
                850.8793028902521,
                400.85927202044786,
                31.02751635631921
              ]
            ],
            "knots": [
              0.6979277891811939,
              0.7747114115901257
            ],
            "max_abs_error": 0.12816123972879723
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                1.4462443842152162,
                -0.11583082260548501,
                -0.0006935316114876702,
                0.023425841907021357
              ]
            ],
            "knots": [
              0.6979277891811939,
              0.7747114115901257
            ],
            "max_abs_error": 0.0005469322544926492
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              -7277.704718676731,
              885.4142626489561,
              401.0660484727514,
              24.043101590516926
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.6979277891811939,
            0.7747114115901257
          ],
          "max_abs_error": 0.03510255794208206,
          "phase": "COPT3_L12",
          "x_hi": 0.7747114115901257,
          "x_lo": 0.6979277891811939
        },
        {
          "enthalpy": {
            "intercept": -23889.619371192468,
            "slope": 23655.103349158016
          },
          "entropy": {
            "intercept": 11.82814055969208,
            "slope": -7.795236006328817
          },
          "intercept": -27416.179479064693,
          "kind": "two_phase",
          "left": {
            "phase": "COPT3_L12",
            "x": 0.7747114115901257
          },
          "mu_a_rel": -27416.179479064693,
          "mu_b_rel": -1436.926514619703,
          "right": {
            "phase": "FCC_A1",
            "x": 0.8223505014127638
          },
          "slope": 25979.25296444499,
          "x_hi": 0.8223505014127638,
          "x_lo": 0.7747114115901257
        },
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                -4436.833271041624,
                501.06128603915215,
                20.174671327501528,
                2.33450788708069
              ],
              [
                -3913.2628057878887,
                548.3723692115163,
                25.302781156939204,
                10.791855606032073
              ],
              [
                -3328.795799813401,
                214.2614324957567,
                -25.69489991294401,
                9.252983935605215
              ],
              [
                -3130.9762832949846,
                317.8454387078272,
                -5.420398091686764,
                1.9290992139880814
              ],
              [
                -2816.6221434648555,
                500.5134287764216,
                2.1778667402967358,
                3.071199356418333
              ],
              [
                -2310.859648591718,
                514.0913202910335,
                11.456442459032132,
                1.476059615025406
              ],
              [
                -1783.8358262266263,
                541.4371001112049,
                16.039586547708495,
                0.7123019356095028
              ],
              [
                -1225.6468376321034,
                575.6563684694456,
                18.209990415069115,
                0.21663670162979543
              ],
              [
                -631.5638420459586,
                612.7275742716554,
                18.821258472934687,
                0.015009301368536399
              ]
            ],
            "knots": [
              0.8223505014127638,
              0.844556685536419,
              0.8667628731740735,
              0.875090193538194,
              0.888969060811728,
              0.9111752484493824,
              0.9333814360870367,
              0.9555876237246912,
              0.9777938113623457,
              1.0
            ],
            "max_abs_error": 0.27416248698182244
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                1.528131155301642,
                0.028506986384973922,
                0.0224198566420004,
                0.009872864806239404
              ],
              [
                1.5889308631348555,
                0.10280739436724673,
                0.04547263951807334,
                0.04153763804891675
              ],
              [
                1.7787485350690924,
                0.04460421035830308,
                -0.09246937327020133,
                0.03078990399745108
              ],
              [
                1.7616732761546445,
                -0.07953552900269224,
                -0.0383953701323653,
                0.005796281954484922
              ],
              [
                1.6495386589740724,
                -0.22215581151644978,
                -0.05028317681685002,
                0.008619957524886535
              ],
              [
                1.385719628165659,
                -0.29683785595646156,
                -0.024385360291195146,
                0.003983907876895232
              ],
              [
                1.0684803197948978,
                -0.3336442224666151,
                -0.012028444593226606,
                0.0019118786179677105
              ],
              [
                0.7247195313530237,
                -0.35195715684604956,
                -0.006203450689437062,
                0.0005813383833654928
              ],
              [
                0.3671402622009027,
                -0.36261684959883667,
                -0.004564903151592248,
                4.149054952634623e-05
              ]
            ],
            "knots": [
              0.8223505014127638,
              0.844556685536419,
              0.8667628731740735,
              0.875090193538194,
              0.888969060811728,
              0.9111752484493824,
              0.9333814360870367,
              0.9555876237246912,
              0.9777938113623457,
              1.0
            ],
            "max_abs_error": 0.0009177857143707335
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              -4892.445574994809,
              985.1239340420528,
              56.83431832400356,
              -8.642352915498577
            ],
            [
              -3859.12967554425,
              1071.8009982796766,
              56.566657170103326,
              6.750064365161734
            ],
            [
              -2724.011955729309,
              1205.1870540890309,
              75.31249004887377,
              1.7904456863952873
            ],
            [
              -1441.7219659050083,
              1361.184820214886,
              80.36774485105775,
              0.16940083906501968
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.8223505014127638,
            0.8667628731740735,
            0.9111752484493824,
            0.9555876237246912,
            1.0
          ],
          "max_abs_error": 0.24717915979908867,
          "phase": "FCC_A1",
          "x_hi": 1.0,
          "x_lo": 0.8223505014127638
        }
      ],
      "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": -10427.875855212533,
          "energy_per_atom": -10427.875855212533,
          "enthalpy": -8374.773103171352,
          "entries_at_x": 1,
          "entropy": 6.886140372433935,
          "formula": "",
          "nsites": null,
          "phase": "HCP_A3",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.4034249388942035
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -10591.869343789833,
          "energy_per_atom": -10591.869343789833,
          "enthalpy": -8385.329984987857,
          "entries_at_x": 1,
          "entropy": 7.400769273191258,
          "formula": "",
          "nsites": null,
          "phase": "COPT_L10",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.44180528911502454
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -9708.60537596744,
          "energy_per_atom": -9708.60537596744,
          "enthalpy": -7615.171389223548,
          "entries_at_x": 1,
          "entropy": 7.021411996457779,
          "formula": "",
          "nsites": null,
          "phase": "COPT_L10",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.6308860450430972
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -8796.338265518518,
          "energy_per_atom": -8796.338265518518,
          "enthalpy": -6846.506955522971,
          "entries_at_x": 1,
          "entropy": 6.539766258579753,
          "formula": "",
          "nsites": null,
          "phase": "COPT3_L12",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.6979277891811939
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -7289.755742922556,
          "energy_per_atom": -7289.755742922556,
          "enthalpy": -5563.74086425595,
          "entries_at_x": 1,
          "entropy": 5.78908226955091,
          "formula": "",
          "nsites": null,
          "phase": "COPT3_L12",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.7747114115901257
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -6052.127777424324,
          "energy_per_atom": -6052.127777424324,
          "enthalpy": -4436.833271041624,
          "entries_at_x": 1,
          "entropy": 5.417724321256749,
          "formula": "",
          "nsites": null,
          "phase": "FCC_A1",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.8223505014127638
        },
        {
          "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": "FCC_A1",
          "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": "CoPt-90Spe-LB",
    "builder_version": 1,
    "engine": {
      "numpy": "2.5.1",
      "pycalphad": "0.11.2",
      "python": "3.13.15"
    },
    "fit_tol": 1.0,
    "observed_at": "2026-09-03T00:25:50Z",
    "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/CoPt-90Spe-LB.tdb",
    "source_sha256": "8a9bf4d4f4636b8994e37943ba8aff05c80e6d02794f1c610e7343ae0dee89c6"
  },
  "reference": {
    "kind": "calphad_formation_T",
    "per": "mole_atoms",
    "temperature_K": 298.15,
    "units": "J/mol-atoms"
  },
  "schema_version": 1,
  "system_id": "CO-PT",
  "x_element": "PT"
}
