{
  "counts": {
    "above_hull": 0,
    "entries": 4,
    "intervals": 3,
    "vertices": 4
  },
  "elements": [
    "SN",
    "ZN"
  ],
  "flags": [
    "no_intermediate_phases",
    "solution_phases"
  ],
  "isotherms": [
    {
      "element_reference": {
        "SN": {
          "energy": -15259.304680324116,
          "phase": "BCT_A5"
        },
        "ZN": {
          "energy": -12411.984216385841,
          "phase": "HCP_A3"
        }
      },
      "intervals": [
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                0.0,
                26.44263688496197,
                -0.04928112371582927,
                -0.0009175043552929196
              ]
            ],
            "knots": [
              0.0,
              0.002769840183529694
            ],
            "max_abs_error": 0.0001270578744954065
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                0.0,
                -0.04758722482693759,
                0.00017923023533236715,
                -1.410540005732791e-05
              ]
            ],
            "knots": [
              0.0,
              0.002769840183529694
            ],
            "max_abs_error": 2.0262743481574974e-06
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              0.0,
              40.63076796737675,
              -0.10271861882382893,
              0.0032880208539225464
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.0,
            0.002769840183529694
          ],
          "max_abs_error": 0.00047709612995738837,
          "phase": "BCT_A5",
          "x_hi": 0.002769840183529694,
          "x_lo": 0.0
        },
        {
          "enthalpy": {
            "intercept": 26.46551559742987,
            "slope": -26.383233579164596
          },
          "entropy": {
            "intercept": 0.11150504532128455,
            "slope": -0.11120921474620293
          },
          "intercept": -6.779713665109306,
          "kind": "two_phase",
          "left": {
            "phase": "BCT_A5",
            "x": 0.002769840183529694
          },
          "mu_a_rel": -6.779713665109306,
          "mu_b_rel": -0.005919867694834657,
          "right": {
            "phase": "HCP_A3",
            "x": 0.9999976019615652
          },
          "slope": 6.773793797414472,
          "x_hi": 0.9999976019615652,
          "x_lo": 0.002769840183529694
        },
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                0.08234528627343266,
                -0.0823794633726505,
                -0.0031221834274320487,
                0.0031563605266498873
              ]
            ],
            "knots": [
              0.9999976019615652,
              1.0
            ],
            "max_abs_error": 0.0004524635919639225
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                1.813883755969007e-05,
                -1.8336558586698928e-05,
                -1.797712809335747e-05,
                1.8174849120366328e-05
              ]
            ],
            "knots": [
              0.9999976019615652,
              1.0
            ],
            "max_abs_error": 2.6053719562239724e-06
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              0.07693719185548584,
              -0.07691241825105156,
              0.002237696729727817,
              -0.0022624703341620894
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.9999976019615652,
            1.0
          ],
          "max_abs_error": 0.00032432803712972164,
          "phase": "HCP_A3",
          "x_hi": 1.0,
          "x_lo": 0.9999976019615652
        }
      ],
      "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": "BCT_A5",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.0
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -6.760951338854284,
          "energy_per_atom": -6.760951338854284,
          "enthalpy": 26.392438256890852,
          "entries_at_x": 1,
          "entropy": 0.11119701356950173,
          "formula": "",
          "nsites": null,
          "phase": "BCT_A5",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.002769840183529694
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.00593611151271034,
          "energy_per_atom": -0.00593611151271034,
          "enthalpy": 0.08234528627343266,
          "entries_at_x": 1,
          "entropy": 0.0002960972590528854,
          "formula": "",
          "nsites": null,
          "phase": "HCP_A3",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.9999976019615652
        },
        {
          "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": "SnZn-96Lee",
    "builder_version": 1,
    "engine": {
      "numpy": "2.5.1",
      "pycalphad": "0.11.2",
      "python": "3.13.15"
    },
    "fit_tol": 1.0,
    "observed_at": "2026-09-03T01:02:12Z",
    "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/SnZn-96Lee.tdb",
    "source_sha256": "242f5b5ef74d7149d9ea48fe2dbb3eae8fc06425b3da8acb981c5fd52f25823a"
  },
  "reference": {
    "kind": "calphad_formation_T",
    "per": "mole_atoms",
    "temperature_K": 298.15,
    "units": "J/mol-atoms"
  },
  "schema_version": 1,
  "system_id": "SN-ZN",
  "x_element": "ZN"
}
