{
  "counts": {
    "above_hull": 0,
    "entries": 7,
    "intervals": 6,
    "vertices": 7
  },
  "elements": [
    "AL",
    "CO"
  ],
  "flags": [
    "has_intermediate_phases"
  ],
  "isotherms": [
    {
      "element_reference": {
        "AL": {
          "energy": -8437.646107009306,
          "phase": "FCC_A1"
        },
        "CO": {
          "energy": -8956.449421591404,
          "phase": "HCP_A3"
        }
      },
      "intervals": [
        {
          "enthalpy": {
            "intercept": 0.0,
            "slope": -187378.61982258188
          },
          "entropy": {
            "intercept": 0.0,
            "slope": -44.82926943563594
          },
          "intercept": 0.0,
          "kind": "two_phase",
          "left": {
            "phase": "FCC_A1",
            "x": 0.0
          },
          "mu_a_rel": 0.0,
          "mu_b_rel": -174012.77314034707,
          "right": {
            "phase": "AL9CO2",
            "x": 0.18181818181818182
          },
          "slope": -174012.77314034707,
          "x_hi": 0.18181818181818182,
          "x_lo": 0.0
        },
        {
          "enthalpy": {
            "intercept": -14367.999910676928,
            "slope": -108354.62031385877
          },
          "entropy": {
            "intercept": -7.428000171689073,
            "slope": -3.9752684913460423
          },
          "intercept": -12153.341659487862,
          "kind": "two_phase",
          "left": {
            "phase": "AL9CO2",
            "x": 0.18181818181818182
          },
          "mu_a_rel": -12153.341659487862,
          "mu_b_rel": -119322.7356726517,
          "right": {
            "phase": "AL13CO4",
            "x": 0.23529411764705882
          },
          "slope": -107169.39401316384,
          "x_hi": 0.23529411764705882,
          "x_lo": 0.18181818181818182
        },
        {
          "enthalpy": {
            "intercept": -13799.999910676954,
            "slope": -110768.62031385867
          },
          "entropy": {
            "intercept": -3.460000171689086,
            "slope": -20.839268491345987
          },
          "intercept": -12768.400859487818,
          "kind": "two_phase",
          "left": {
            "phase": "AL13CO4",
            "x": 0.23529411764705882
          },
          "mu_a_rel": -12768.400859487818,
          "mu_b_rel": -117323.79327265185,
          "right": {
            "phase": "AL3CO",
            "x": 0.25
          },
          "slope": -104555.39241316402,
          "x_hi": 0.25,
          "x_lo": 0.23529411764705882
        },
        {
          "enthalpy": {
            "intercept": -13879.99991067698,
            "slope": -110448.62031385857
          },
          "entropy": {
            "intercept": -1.8200001716890748,
            "slope": -27.39926849134603
          },
          "intercept": -13337.366859487938,
          "kind": "two_phase",
          "left": {
            "phase": "AL3CO",
            "x": 0.25
          },
          "mu_a_rel": -13337.366859487938,
          "mu_b_rel": -115616.89527265148,
          "right": {
            "phase": "AL5CO2_D811",
            "x": 0.2857142857142857
          },
          "slope": -102279.52841316354,
          "x_hi": 0.2857142857142857,
          "x_lo": 0.25
        },
        {
          "enthalpy": {
            "intercept": -24348.633553938573,
            "slope": -73808.40256244299
          },
          "entropy": {
            "intercept": -2.3464340456250063,
            "slope": -25.55674993257027
          },
          "intercept": -23649.04424323548,
          "kind": "two_phase",
          "left": {
            "phase": "AL5CO2_D811",
            "x": 0.2857142857142857
          },
          "mu_a_rel": -23649.04424323548,
          "mu_b_rel": -89837.70181328262,
          "right": {
            "phase": "B2_BCC",
            "x": 0.49999999846543397
          },
          "slope": -66188.65757004714,
          "x_hi": 0.49999999846543397,
          "x_lo": 0.2857142857142857
        },
        {
          "enthalpy": {
            "intercept": -122505.66906780633,
            "slope": 122505.66906780633
          },
          "entropy": {
            "intercept": -30.24961785254317,
            "slope": 30.24961785254317
          },
          "intercept": -113486.74550507056,
          "kind": "two_phase",
          "left": {
            "phase": "B2_BCC",
            "x": 0.49999999846543397
          },
          "mu_a_rel": -113486.74550507056,
          "mu_b_rel": 0.0,
          "right": {
            "phase": "HCP_A3",
            "x": 1.0
          },
          "slope": 113486.74550507056,
          "x_hi": 1.0,
          "x_lo": 0.49999999846543397
        }
      ],
      "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": "FCC_A1",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.0
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -31638.68602551765,
          "energy_per_atom": -31638.68602551765,
          "enthalpy": -34068.83996774216,
          "entries_at_x": 1,
          "entropy": -8.150776261024717,
          "formula": "",
          "nsites": null,
          "phase": "AL9CO2",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.18181818181818182
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -37369.669662585235,
          "energy_per_atom": -37369.669662585235,
          "enthalpy": -39863.204690408405,
          "entries_at_x": 1,
          "entropy": -8.363357463770495,
          "formula": "",
          "nsites": null,
          "phase": "AL13CO4",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.23529411764705882
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -38907.24896277882,
          "energy_per_atom": -38907.24896277882,
          "enthalpy": -41492.15498914162,
          "entries_at_x": 1,
          "entropy": -8.669817294525583,
          "formula": "",
          "nsites": null,
          "phase": "AL3CO",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.25
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -42560.08926324895,
          "energy_per_atom": -42560.08926324895,
          "enthalpy": -45436.748571779426,
          "entries_at_x": 1,
          "entropy": -9.64836259778794,
          "formula": "",
          "nsites": null,
          "phase": "AL5CO2_D811",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.2857142857142857
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -56743.372926688186,
          "energy_per_atom": -56743.372926688186,
          "enthalpy": -61252.8347218962,
          "entries_at_x": 1,
          "entropy": -15.124808972691621,
          "formula": "",
          "nsites": null,
          "phase": "B2_BCC",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.49999999846543397
        },
        {
          "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": 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": "AlCo-98Dup-LB",
    "builder_version": 1,
    "engine": {
      "numpy": "2.5.1",
      "pycalphad": "0.11.2",
      "python": "3.13.15"
    },
    "fit_tol": 1.0,
    "observed_at": "2026-09-03T00:08:58Z",
    "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/AlCo-98Dup-LB.tdb",
    "source_sha256": "2ecab2d7dcdacdeeb978bce034cd71c9224194af2ffd1567eae600661b077847"
  },
  "reference": {
    "kind": "calphad_formation_T",
    "per": "mole_atoms",
    "temperature_K": 298.15,
    "units": "J/mol-atoms"
  },
  "schema_version": 1,
  "system_id": "AL-CO",
  "x_element": "CO"
}