{
  "counts": {
    "above_hull": 0,
    "entries": 8,
    "intervals": 7,
    "vertices": 8
  },
  "elements": [
    "AU",
    "SN"
  ],
  "flags": [
    "has_intermediate_phases",
    "solution_phases"
  ],
  "isotherms": [
    {
      "element_reference": {
        "AU": {
          "energy": -14158.666984371504,
          "phase": "FCC_A1"
        },
        "SN": {
          "energy": -15259.304679811623,
          "phase": "BCT_A5"
        }
      },
      "intervals": [
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                0.0,
                -303.3206379170322,
                0.520548919707096,
                0.14314406972590632
              ]
            ],
            "knots": [
              0.0,
              0.01923619430684616
            ],
            "max_abs_error": 0.00021882754998614473
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                0.0,
                0.47102938787066595,
                -0.015826820315016088,
                0.00015080667361894173
              ]
            ],
            "knots": [
              0.0,
              0.01923619430684616
            ],
            "max_abs_error": 2.514947074622187e-06
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              0.0,
              -443.75804991101495,
              5.239315397287726,
              0.09818105966888879
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.0,
            0.01923619430684616
          ],
          "max_abs_error": 0.0009683030524740843,
          "phase": "FCC_A1",
          "x_hi": 0.01923619430684616,
          "x_lo": 0.0
        },
        {
          "enthalpy": {
            "intercept": 114.65657891439577,
            "slope": -21694.183224873803
          },
          "entropy": {
            "intercept": 0.5642885024394559,
            "slope": 35.42106942833072
          },
          "intercept": -53.5860380879318,
          "kind": "two_phase",
          "left": {
            "phase": "FCC_A1",
            "x": 0.01923619430684616
          },
          "mu_a_rel": -53.5860380879318,
          "mu_b_rel": -32308.561113018477,
          "right": {
            "phase": "HCP_A3",
            "x": 0.07977882084550007
          },
          "slope": -32254.975074930546,
          "x_hi": 0.07977882084550007,
          "x_lo": 0.01923619430684616
        },
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                -1616.0797779722645,
                -93.69337655310598,
                1.6439755567898686,
                -0.005186458700777052
              ]
            ],
            "knots": [
              0.07977882084550007,
              0.08494874586356584
            ],
            "max_abs_error": 0.00012192093799967552
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                1.0768163409521945,
                0.13993768377617388,
                -0.002053072109217763,
                7.392383257059931e-06
              ]
            ],
            "knots": [
              0.07977882084550007,
              0.08494874586356584
            ],
            "max_abs_error": 3.4376456503615316e-07
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              -1937.1325700271605,
              -135.41579697135853,
              2.2560990064631596,
              -0.007390497691744713
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.07977882084550007,
            0.08494874586356584
          ],
          "max_abs_error": 0.0002244143004190846,
          "phase": "HCP_A3",
          "x_hi": 0.08494874586356584,
          "x_lo": 0.07977882084550007
        },
        {
          "enthalpy": {
            "intercept": 942.5681347195557,
            "slope": -31203.55071991372
          },
          "entropy": {
            "intercept": 3.6278819302639396,
            "slope": 0.04448685132589451
          },
          "intercept": -139.08486278862847,
          "kind": "two_phase",
          "left": {
            "phase": "HCP_A3",
            "x": 0.08494874586356584
          },
          "mu_a_rel": -139.08486278862847,
          "mu_b_rel": -31355.89933742525,
          "right": {
            "phase": "AU5SN",
            "x": 0.16
          },
          "slope": -31216.81447463662,
          "x_hi": 0.16,
          "x_lo": 0.08494874586356584
        },
        {
          "enthalpy": {
            "intercept": 1089.4353098859515,
            "slope": -32121.470564703697
          },
          "entropy": {
            "intercept": 5.242058614732464,
            "slope": -10.044117426602385
          },
          "intercept": -473.4844660965364,
          "kind": "two_phase",
          "left": {
            "phase": "AU5SN",
            "x": 0.16
          },
          "mu_a_rel": -473.4844660965364,
          "mu_b_rel": -29600.30142005873,
          "right": {
            "phase": "AUSN_B81",
            "x": 0.5
          },
          "slope": -29126.816953962196,
          "x_hi": 0.5,
          "x_lo": 0.16
        },
        {
          "enthalpy": {
            "intercept": -20645.799984231704,
            "slope": 11349.000023531617
          },
          "entropy": {
            "intercept": 8.829999791203024,
            "slope": -17.219999779543503
          },
          "intercept": -23278.464421978897,
          "kind": "two_phase",
          "left": {
            "phase": "AUSN_B81",
            "x": 0.5
          },
          "mu_a_rel": -23278.464421978897,
          "mu_b_rel": -6795.32146417637,
          "right": {
            "phase": "AUSN2",
            "x": 0.6666666666666666
          },
          "slope": 16483.142957802527,
          "x_hi": 0.6666666666666666,
          "x_lo": 0.5
        },
        {
          "enthalpy": {
            "intercept": -39239.39990563188,
            "slope": 39239.39990563188
          },
          "entropy": {
            "intercept": -7.950000185477932,
            "slope": 7.950000185477932
          },
          "intercept": -36869.10735033164,
          "kind": "two_phase",
          "left": {
            "phase": "AUSN2",
            "x": 0.6666666666666666
          },
          "mu_a_rel": -36869.10735033164,
          "mu_b_rel": 0.0,
          "right": {
            "phase": "BCT_A5",
            "x": 1.0
          },
          "slope": 36869.10735033164,
          "x_hi": 1.0,
          "x_lo": 0.6666666666666666
        }
      ],
      "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": -674.0490059917756,
          "energy_per_atom": -674.0490059917756,
          "enthalpy": -302.65694492759917,
          "entries_at_x": 1,
          "entropy": 1.245655076519114,
          "formula": "",
          "nsites": null,
          "phase": "FCC_A1",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.01923619430684616
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -2626.8499159668863,
          "energy_per_atom": -2626.8499159668863,
          "enthalpy": -1616.0797779722645,
          "entries_at_x": 1,
          "entropy": 3.390139654518272,
          "formula": "",
          "nsites": null,
          "phase": "HCP_A3",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.07977882084550007
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -2790.914102264618,
          "energy_per_atom": -2790.914102264618,
          "enthalpy": -1708.1343654272816,
          "entries_at_x": 1,
          "entropy": 3.6316610324914933,
          "formula": "",
          "nsites": null,
          "phase": "HCP_A3",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.08494874586356584
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -5133.775178730488,
          "energy_per_atom": -5133.775178730488,
          "enthalpy": -4049.99998046664,
          "entries_at_x": 1,
          "entropy": 3.6349998264760828,
          "formula": "",
          "nsites": null,
          "phase": "AU5SN",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.16
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -15036.892943077633,
          "energy_per_atom": -15036.892943077633,
          "enthalpy": -14971.299972465897,
          "entries_at_x": 1,
          "entropy": 0.21999990143127235,
          "formula": "",
          "nsites": null,
          "phase": "AUSN_B81",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.5
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -12289.702450110546,
          "energy_per_atom": -12289.702450110546,
          "enthalpy": -13079.79996854396,
          "entries_at_x": 1,
          "entropy": -2.6500000618259776,
          "formula": "",
          "nsites": null,
          "phase": "AUSN2",
          "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": "BCT_A5",
          "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": "AuSn-07Gro",
    "builder_version": 1,
    "engine": {
      "numpy": "2.5.1",
      "pycalphad": "0.11.2",
      "python": "3.13.15"
    },
    "fit_tol": 1.0,
    "observed_at": "2026-09-03T00:17:22Z",
    "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/AuSn-07Gro.tdb",
    "source_sha256": "35e01e1ad49966cc6f72f084dfd630ccebf95209f84efcee78478a42d51119dd"
  },
  "reference": {
    "kind": "calphad_formation_T",
    "per": "mole_atoms",
    "temperature_K": 298.15,
    "units": "J/mol-atoms"
  },
  "schema_version": 1,
  "system_id": "AU-SN",
  "x_element": "SN"
}
