{
  "counts": {
    "above_hull": 0,
    "entries": 4,
    "intervals": 3,
    "vertices": 4
  },
  "elements": [
    "FE",
    "SN"
  ],
  "flags": [
    "has_intermediate_phases"
  ],
  "isotherms": [
    {
      "element_reference": {
        "FE": {
          "energy": -8133.457535261359,
          "phase": "BCC_A2"
        },
        "SN": {
          "energy": -15259.304683313367,
          "phase": "BCT_A5"
        }
      },
      "intervals": [
        {
          "enthalpy": {
            "intercept": 0.0,
            "slope": -46444.88076041667
          },
          "entropy": {
            "intercept": 0.0,
            "slope": -32.527188580982084
          },
          "intercept": 0.0,
          "kind": "two_phase",
          "left": {
            "phase": "BCC_A2",
            "x": 0.0
          },
          "mu_a_rel": 0.0,
          "mu_b_rel": -36746.89948499687,
          "right": {
            "phase": "FESN_B35",
            "x": 0.5
          },
          "slope": -36746.89948499687,
          "x_hi": 0.5,
          "x_lo": 0.0
        },
        {
          "enthalpy": {
            "intercept": -33115.38182028325,
            "slope": 19785.882880149828
          },
          "entropy": {
            "intercept": -20.165188649877628,
            "slope": 7.803188718773173
          },
          "intercept": -27103.130824322252,
          "kind": "two_phase",
          "left": {
            "phase": "FESN_B35",
            "x": 0.5
          },
          "mu_a_rel": -27103.130824322252,
          "mu_b_rel": -9643.768660674625,
          "right": {
            "phase": "FESN2_C16",
            "x": 0.6666666666666666
          },
          "slope": 17459.362163647627,
          "x_hi": 0.6666666666666666,
          "x_lo": 0.5
        },
        {
          "enthalpy": {
            "intercept": -59774.37970055009,
            "slope": 59774.37970055009
          },
          "entropy": {
            "intercept": -44.889188512086534,
            "slope": 44.889188512086534
          },
          "intercept": -46390.668145671494,
          "kind": "two_phase",
          "left": {
            "phase": "FESN2_C16",
            "x": 0.6666666666666666
          },
          "mu_a_rel": -46390.668145671494,
          "mu_b_rel": 0.0,
          "right": {
            "phase": "BCT_A5",
            "x": 1.0
          },
          "slope": 46390.668145671494,
          "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": "BCC_A2",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.0
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -18373.449742498437,
          "energy_per_atom": -18373.449742498437,
          "enthalpy": -23222.440380208336,
          "entries_at_x": 1,
          "entropy": -16.263594290491042,
          "formula": "",
          "nsites": null,
          "phase": "FESN_B35",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.5
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -15463.556048557166,
          "energy_per_atom": -15463.556048557166,
          "enthalpy": -19924.7932335167,
          "entries_at_x": 1,
          "entropy": -14.96306283736218,
          "formula": "",
          "nsites": null,
          "phase": "FESN2_C16",
          "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": "FeSn-10Hua",
    "builder_version": 1,
    "engine": {
      "numpy": "2.5.1",
      "pycalphad": "0.11.2",
      "python": "3.13.15"
    },
    "fit_tol": 1.0,
    "observed_at": "2026-09-03T00:37:16Z",
    "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/FeSn-10Hua.tdb",
    "source_sha256": "a4b20e684dcb573a1b9b3337cb8914ea0738b2d14714bbed897abee7f7608edf"
  },
  "reference": {
    "kind": "calphad_formation_T",
    "per": "mole_atoms",
    "temperature_K": 298.15,
    "units": "J/mol-atoms"
  },
  "schema_version": 1,
  "system_id": "FE-SN",
  "x_element": "SN"
}
