{
  "counts": {
    "above_hull": 0,
    "entries": 6,
    "intervals": 5,
    "vertices": 6
  },
  "elements": [
    "CO",
    "TI"
  ],
  "flags": [
    "has_intermediate_phases",
    "redundant_phase_descriptions",
    "solution_phases"
  ],
  "isotherms": [
    {
      "element_reference": {
        "CO": {
          "energy": -8956.449408298131,
          "phase": "HCP_A3"
        },
        "TI": {
          "energy": -9159.168209528818,
          "phase": "HCP_A3"
        }
      },
      "intervals": [
        {
          "enthalpy": {
            "intercept": 0.0,
            "slope": -103166.26850941149
          },
          "entropy": {
            "intercept": 0.0,
            "slope": -16.205483031687383
          },
          "intercept": 0.0,
          "kind": "two_phase",
          "left": {
            "phase": "HCP_A3#1",
            "x": 0.0
          },
          "mu_a_rel": 0.0,
          "mu_b_rel": -98334.60374351387,
          "right": {
            "phase": "L12_FCC",
            "x": 0.24999999765400005
          },
          "slope": -98334.60374351387,
          "x_hi": 0.24999999765400005,
          "x_lo": 0.0
        },
        {
          "enthalpy": {
            "intercept": -7582.265202775452,
            "slope": -72837.20741370178
          },
          "entropy": {
            "intercept": -2.3031005315345077,
            "slope": -6.993080819100172
          },
          "intercept": -6895.59577929843,
          "kind": "two_phase",
          "left": {
            "phase": "L12_FCC",
            "x": 0.24999999765400005
          },
          "mu_a_rel": -6895.59577929843,
          "mu_b_rel": -77647.8161467855,
          "right": {
            "phase": "B2_BCC",
            "x": 0.49997357932256764
          },
          "slope": -70752.22036748707,
          "x_hi": 0.49997357932256764,
          "x_lo": 0.24999999765400005
        },
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                -43998.94450126419,
                -2.4908885488606636,
                2.2248960789283956e-05,
                2.9240481183023803e-06
              ]
            ],
            "knots": [
              0.49997357932256764,
              0.5000000000000013
            ],
            "max_abs_error": 4.184839781373739e-07
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                -11.562602489188137,
                -0.0020847499410981962,
                0.00063321613483233,
                -0.0008528067753017215
              ]
            ],
            "knots": [
              0.49997357932256764,
              0.5000000000000013
            ],
            "max_abs_error": 9.561858283824165e-05
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              -40551.55456911274,
              -1.8693203544845007,
              -0.18877114285037622,
              0.25426726588243853
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.49997357932256764,
            0.5000000000000013
          ],
          "max_abs_error": 0.02850909615517594,
          "phase": "B2_BCC",
          "x_hi": 0.5000000000000013,
          "x_lo": 0.49997357932256764
        },
        {
          "enthalpy": {
            "intercept": -74715.12129090879,
            "slope": 61427.37185253738
          },
          "entropy": {
            "intercept": -9.11277288531479,
            "slope": 6.622024754378114
          },
          "intercept": -71998.14805515218,
          "kind": "two_phase",
          "left": {
            "phase": "B2_BCC",
            "x": 0.5000000000000013
          },
          "mu_a_rel": -71998.14805515218,
          "mu_b_rel": -12545.132883132661,
          "right": {
            "phase": "COTI2",
            "x": 0.6666666666666666
          },
          "slope": 59453.01517201952,
          "x_hi": 0.6666666666666666,
          "x_lo": 0.5000000000000013
        },
        {
          "enthalpy": {
            "intercept": -101290.62016765162,
            "slope": 101290.62016765164
          },
          "entropy": {
            "intercept": -14.094269147188141,
            "slope": 14.094269147188141
          },
          "intercept": -97088.41382141749,
          "kind": "two_phase",
          "left": {
            "phase": "COTI2",
            "x": 0.6666666666666666
          },
          "mu_a_rel": -97088.41382141749,
          "mu_b_rel": 0.0,
          "right": {
            "phase": "HCP_A3#2",
            "x": 1.0
          },
          "slope": 97088.41382141749,
          "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": -24583.650705185493,
          "energy_per_atom": -24583.650705185493,
          "enthalpy": -25791.56688532481,
          "entries_at_x": 1,
          "entropy": -4.051370719903783,
          "formula": "",
          "nsites": null,
          "phase": "L12_FCC",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.24999999765400005
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -42269.83664145001,
          "energy_per_atom": -42269.83664145001,
          "enthalpy": -43998.94450126419,
          "entries_at_x": 1,
          "entropy": -5.799456179152013,
          "formula": "",
          "nsites": null,
          "phase": "B2_BCC",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.49997357932256764
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -42271.64046914234,
          "energy_per_atom": -42271.64046914234,
          "enthalpy": -44001.43536464003,
          "entries_at_x": 1,
          "entropy": -5.801760508125724,
          "formula": "",
          "nsites": null,
          "phase": "B2_BCC",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.5000000000000013
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -32362.804607139165,
          "energy_per_atom": -32362.804607139165,
          "enthalpy": -33763.54005588388,
          "entries_at_x": 1,
          "entropy": -4.698089715729381,
          "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-18Zho",
    "builder_version": 1,
    "engine": {
      "numpy": "2.5.1",
      "pycalphad": "0.11.2",
      "python": "3.13.15"
    },
    "fit_tol": 1.0,
    "observed_at": "2026-09-03T00:27:05Z",
    "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-18Zho.tdb",
    "source_sha256": "647d0f8bf6e642c136196098e2ed8d70b3006822f8fb8b5801715c81f5b7c39a"
  },
  "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"
}
