{
  "counts": {
    "above_hull": 0,
    "entries": 8,
    "intervals": 7,
    "vertices": 8
  },
  "elements": [
    "CO",
    "TI"
  ],
  "flags": [
    "has_intermediate_phases",
    "redundant_phase_descriptions",
    "solution_phases"
  ],
  "isotherms": [
    {
      "element_reference": {
        "CO": {
          "energy": -8956.449418365675,
          "phase": "HCP_A3"
        },
        "TI": {
          "energy": -9159.168211201622,
          "phase": "HCP_A3"
        }
      },
      "intervals": [
        {
          "enthalpy": {
            "intercept": 0.0,
            "slope": -114613.54331344439
          },
          "entropy": {
            "intercept": 0.0,
            "slope": -21.317638005068876
          },
          "intercept": 0.0,
          "kind": "two_phase",
          "left": {
            "phase": "HCP_A3#1",
            "x": 0.0
          },
          "mu_a_rel": 0.0,
          "mu_b_rel": -108257.68954223314,
          "right": {
            "phase": "L12_FCC",
            "x": 0.24999849811048355
          },
          "slope": -108257.68954223314,
          "x_hi": 0.24999849811048355,
          "x_lo": 0.0
        },
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                -28653.213691481953,
                -0.22979937163358352,
                -0.04993035007428562,
                0.050188610655462346
              ]
            ],
            "knots": [
              0.24999849811048355,
              0.2500000022884112
            ],
            "max_abs_error": 0.0073212075694755185
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                -10.004878304471298,
                -0.0002383252901607632,
                -0.00011412566103852643,
                0.00010235751815524256
              ]
            ],
            "knots": [
              0.24999849811048355,
              0.2500000022884112
            ],
            "max_abs_error": 1.663458357370473e-05
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              -25670.259225003843,
              -0.15874268496299707,
              -0.015903788420145865,
              0.019670719402383546
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.24999849811048355,
            0.2500000022884112
          ],
          "max_abs_error": 0.0023741478653391823,
          "phase": "L12_FCC",
          "x_hi": 0.2500000022884112,
          "x_lo": 0.24999849811048355
        },
        {
          "enthalpy": {
            "intercept": -6656.531739557333,
            "slope": -87987.64516673505
          },
          "entropy": {
            "intercept": -3.933917856436811,
            "slope": -5.582783875927
          },
          "intercept": -5483.634130660645,
          "kind": "two_phase",
          "left": {
            "phase": "L12_FCC",
            "x": 0.2500000022884112
          },
          "mu_a_rel": -5483.634130660645,
          "mu_b_rel": -91806.77228478828,
          "right": {
            "phase": "C15_LAVES",
            "x": 0.33333333289686745
          },
          "slope": -86323.13815412764,
          "x_hi": 0.33333333289686745,
          "x_lo": 0.2500000022884112
        },
        {
          "enthalpy": {
            "intercept": -25631.781122043736,
            "slope": -31061.896944737404
          },
          "entropy": {
            "intercept": -7.859622703882359,
            "slope": 6.194330681830571
          },
          "intercept": -23288.434612881247,
          "kind": "two_phase",
          "left": {
            "phase": "C15_LAVES",
            "x": 0.33333333289686745
          },
          "mu_a_rel": -23288.434612881247,
          "mu_b_rel": -56197.171250406376,
          "right": {
            "phase": "B2_BCC",
            "x": 0.49999851743014134
          },
          "slope": -32908.73663752513,
          "x_hi": 0.49999851743014134,
          "x_lo": 0.33333333289686745
        },
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                -41162.683542980274,
                -0.0858551593196877,
                -0.00026384577299154444,
                0.0002648329021610607
              ]
            ],
            "knots": [
              0.49999851743014134,
              0.500000000007044
            ],
            "max_abs_error": 3.871128137689084e-05
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                -10.525612868102467,
                -0.0001243174532015418,
                4.4585047511955044e-05,
                -5.6911399358735925e-05
              ]
            ],
            "knots": [
              0.49999851743014134,
              0.500000000007044
            ],
            "max_abs_error": 6.697262644905777e-06
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              -38024.472066355534,
              -0.0487899090358328,
              -0.01355687937679521,
              0.017232966695831225
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.49999851743014134,
            0.500000000007044
          ],
          "max_abs_error": 0.0020352087158244103,
          "phase": "B2_BCC",
          "x_hi": 0.500000000007044,
          "x_lo": 0.49999851743014134
        },
        {
          "enthalpy": {
            "intercept": -59242.45744347738,
            "slope": 36159.37609214042
          },
          "entropy": {
            "intercept": 4.090856359508493,
            "slope": -17.706919099294595
          },
          "intercept": -60462.146267064854,
          "kind": "two_phase",
          "left": {
            "phase": "B2_BCC",
            "x": 0.500000000007044
          },
          "mu_a_rel": -60462.146267064854,
          "mu_b_rel": -19023.45224546975,
          "right": {
            "phase": "COTI2",
            "x": 0.6666666666666666
          },
          "slope": 41438.6940215951,
          "x_hi": 0.6666666666666666,
          "x_lo": 0.500000000007044
        },
        {
          "enthalpy": {
            "intercept": -105408.6201461513,
            "slope": 105408.6201461513
          },
          "entropy": {
            "intercept": -23.141269120063708,
            "slope": 23.141269120063708
          },
          "intercept": -98509.05075800433,
          "kind": "two_phase",
          "left": {
            "phase": "COTI2",
            "x": 0.6666666666666666
          },
          "mu_a_rel": -98509.05075800433,
          "mu_b_rel": 1.4551915228366852e-11,
          "right": {
            "phase": "HCP_A3#2",
            "x": 1.0
          },
          "slope": 98509.05075800435,
          "x_hi": 1.0,
          "x_lo": 0.6666666666666666
        }
      ],
      "phase_instances": {
        "HCP_A3#1": "HCP_A3",
        "HCP_A3#2": "HCP_A3"
      },
      "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#1",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.0
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -27064.259794469286,
          "energy_per_atom": -27064.259794469286,
          "enthalpy": -28653.213691481953,
          "entries_at_x": 1,
          "entropy": -5.329377484530184,
          "formula": "",
          "nsites": null,
          "phase": "L12_FCC",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.24999849811048355
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -27064.41886673539,
          "energy_per_atom": -27064.41886673539,
          "enthalpy": -28653.443232593007,
          "entries_at_x": 1,
          "entropy": -5.329613838194266,
          "formula": "",
          "nsites": null,
          "phase": "L12_FCC",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.2500000022884112
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -34258.01347769275,
          "energy_per_atom": -34258.01347769275,
          "enthalpy": -35985.74675673208,
          "entries_at_x": 1,
          "entropy": -5.79484581264245,
          "formula": "",
          "nsites": null,
          "phase": "C15_LAVES",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.33333333289686745
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -39742.75414214279,
          "energy_per_atom": -39742.75414214279,
          "enthalpy": -41162.683542980274,
          "entries_at_x": 1,
          "entropy": -4.7624665464950375,
          "formula": "",
          "nsites": null,
          "phase": "B2_BCC",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.49999851743014134
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -39742.799255975406,
          "energy_per_atom": -39742.799255975406,
          "enthalpy": -41162.769397152464,
          "entries_at_x": 1,
          "entropy": -4.762603190263533,
          "formula": "",
          "nsites": null,
          "phase": "B2_BCC",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.500000000007044
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -32836.35025266812,
          "energy_per_atom": -32836.35025266812,
          "enthalpy": -35136.20671538377,
          "entries_at_x": 1,
          "entropy": -7.71375637335457,
          "formula": "",
          "nsites": null,
          "phase": "COTI2",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.6666666666666666
        },
        {
          "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#2",
          "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": "CoTi-00Cac",
    "builder_version": 1,
    "engine": {
      "numpy": "2.5.1",
      "pycalphad": "0.11.2",
      "python": "3.13.15"
    },
    "fit_tol": 1.0,
    "observed_at": "2026-09-03T00:27:01Z",
    "phase_families": {
      "FCC_A1": "A1_FCC"
    },
    "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/CoTi-00Cac.tdb",
    "source_sha256": "6fb1ebbac943b8ac5c4dcb1d4488dd0d30aa697cc6bbcbb24510f39d0b3d601a"
  },
  "reference": {
    "kind": "calphad_formation_T",
    "per": "mole_atoms",
    "temperature_K": 298.15,
    "units": "J/mol-atoms"
  },
  "schema_version": 1,
  "system_id": "CO-TI",
  "x_element": "TI"
}
