{
  "counts": {
    "above_hull": 0,
    "entries": 4,
    "intervals": 3,
    "vertices": 4
  },
  "elements": [
    "AL",
    "ZN"
  ],
  "flags": [
    "no_intermediate_phases",
    "solution_phases"
  ],
  "isotherms": [
    {
      "element_reference": {
        "AL": {
          "energy": -8437.646011249217,
          "phase": "FCC_A1"
        },
        "ZN": {
          "energy": -12411.984219838654,
          "phase": "HCP_A3"
        }
      },
      "intervals": [
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                0.0,
                74.61842557676577,
                -0.3388786512932853,
                -0.0031055993002269133
              ]
            ],
            "knots": [
              0.0,
              0.005413901330317842
            ],
            "max_abs_error": 0.00018568202287028157
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                0.0,
                0.012864744292972057,
                0.00013010506839521672,
                -2.038987573280311e-05
              ]
            ],
            "knots": [
              0.0,
              0.005413901330317842
            ],
            "max_abs_error": 2.5579254815024516e-06
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              0.0,
              70.78280206599017,
              -0.377669477313475,
              0.002973641854381981
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.0,
            0.005413901330317842
          ],
          "max_abs_error": 0.0005769635230201686,
          "phase": "FCC_A1",
          "x_hi": 0.005413901330317842,
          "x_lo": 0.0
        },
        {
          "enthalpy": {
            "intercept": 74.66022329251001,
            "slope": -70.88824544854056
          },
          "entropy": {
            "intercept": 0.29430082358596116,
            "slope": -0.28039316246185075
          },
          "intercept": -13.085567259643538,
          "kind": "two_phase",
          "left": {
            "phase": "FCC_A1",
            "x": 0.005413901330317842
          },
          "mu_a_rel": -13.085567259643538,
          "mu_b_rel": -0.3745913201862656,
          "right": {
            "phase": "HCP_A3",
            "x": 0.9998486978138909
          },
          "slope": 12.710975939457272,
          "x_hi": 0.9998486978138909,
          "x_lo": 0.005413901330317842
        },
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                3.7827033904752696,
                -3.782185011710968,
                -0.0028680726160490444,
                0.0023496938517473254
              ]
            ],
            "knots": [
              0.9998486978138909,
              1.0
            ],
            "max_abs_error": 0.00033708949167921
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                0.0016265567396263631,
                -0.0016265241901359754,
                -1.6741562096158702e-05,
                1.670901260577098e-05
              ]
            ],
            "knots": [
              0.9998486978138909,
              1.0
            ],
            "max_abs_error": 2.3977436087707074e-06
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              3.2977454985534513,
              -3.2972368240393135,
              0.0021234235716525163,
              -0.0026320980857899023
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.9998486978138909,
            1.0
          ],
          "max_abs_error": 0.0003777978236838564,
          "phase": "HCP_A3",
          "x_hi": 1.0,
          "x_lo": 0.9998486978138909
        }
      ],
      "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": -13.016751290095272,
          "energy_per_atom": -13.016751290095272,
          "enthalpy": 74.27644132617226,
          "entries_at_x": 1,
          "entropy": 0.2927828026706969,
          "formula": "",
          "nsites": null,
          "phase": "FCC_A1",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.005413901330317842
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.37651451863348484,
          "energy_per_atom": -0.37651451863348484,
          "enthalpy": 3.7827033904752696,
          "entries_at_x": 1,
          "entropy": 0.013950085222560915,
          "formula": "",
          "nsites": null,
          "phase": "HCP_A3",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.9998486978138909
        },
        {
          "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": "AlZn-93Mey-LB",
    "builder_version": 1,
    "engine": {
      "numpy": "2.5.1",
      "pycalphad": "0.11.2",
      "python": "3.13.15"
    },
    "fit_tol": 1.0,
    "observed_at": "2026-09-03T00:15:08Z",
    "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/AlZn-93Mey-LB.tdb",
    "source_sha256": "676cd7377477636fa4715ce4148d7b9bcd3290762ce5b0b9d4fdd8c7570f00c5"
  },
  "reference": {
    "kind": "calphad_formation_T",
    "per": "mole_atoms",
    "temperature_K": 298.15,
    "units": "J/mol-atoms"
  },
  "schema_version": 1,
  "system_id": "AL-ZN",
  "x_element": "ZN"
}
