{
  "counts": {
    "above_hull": 0,
    "entries": 4,
    "intervals": 3,
    "vertices": 4
  },
  "elements": [
    "MG",
    "SN"
  ],
  "flags": [
    "has_intermediate_phases",
    "solution_phases"
  ],
  "isotherms": [
    {
      "element_reference": {
        "MG": {
          "energy": -9740.859342036225,
          "phase": "HCP_A3"
        },
        "SN": {
          "energy": -15259.304941643955,
          "phase": "BCT_A5"
        }
      },
      "intervals": [
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                0.0,
                -0.10153381905407735,
                -0.0629194651125011,
                0.031269736783154034
              ]
            ],
            "knots": [
              0.0,
              3.505657616611947e-06
            ],
            "max_abs_error": 0.004465127304109966
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                0.0,
                -0.0001395879863503779,
                0.0003044979976939995,
                -0.0001513271552441891
              ]
            ],
            "knots": [
              0.0,
              3.505657616611947e-06
            ],
            "max_abs_error": 2.1608608796945006e-05
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              0.0,
              -0.05991566118149343,
              -0.15370554229566308,
              0.07638792754394508
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.0,
            3.505657616611947e-06
          ],
          "max_abs_error": 0.010907734003647931,
          "phase": "HCP_A3",
          "x_hi": 3.505657616611947e-06,
          "x_lo": 0.0
        },
        {
          "enthalpy": {
            "intercept": 0.14236263445678166,
            "slope": -78600.4259327836
          },
          "entropy": {
            "intercept": 0.0005035161345135991,
            "slope": -27.001513915860574
          },
          "intercept": -0.007760701052189151,
          "kind": "two_phase",
          "left": {
            "phase": "HCP_A3",
            "x": 3.505657616611947e-06
          },
          "mu_a_rel": -0.007760701052189151,
          "mu_b_rel": -70549.93231947083,
          "right": {
            "phase": "MG2SN_C1",
            "x": 0.3333333333333333
          },
          "slope": -70549.92455876978,
          "x_hi": 0.3333333333333333,
          "x_lo": 3.505657616611947e-06
        },
        {
          "enthalpy": {
            "intercept": -39299.999422440116,
            "slope": 39299.99942244011
          },
          "entropy": {
            "intercept": -13.500001683728517,
            "slope": 13.500001683728515
          },
          "intercept": -35274.97392043646,
          "kind": "two_phase",
          "left": {
            "phase": "MG2SN_C1",
            "x": 0.3333333333333333
          },
          "mu_a_rel": -35274.97392043646,
          "mu_b_rel": 0.0,
          "right": {
            "phase": "BCT_A5",
            "x": 1.0
          },
          "slope": 35274.97392043646,
          "x_hi": 1.0,
          "x_lo": 0.3333333333333333
        }
      ],
      "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",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.0
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.2550845814330387,
          "energy_per_atom": -0.2550845814330387,
          "enthalpy": -0.13318354738342442,
          "entries_at_x": 1,
          "entropy": 0.000408858071594409,
          "formula": "",
          "nsites": null,
          "phase": "HCP_A3",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 3.505657616611947e-06
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -23516.649280290978,
          "energy_per_atom": -23516.649280290978,
          "enthalpy": -26199.999614960077,
          "entries_at_x": 1,
          "entropy": -9.000001122485678,
          "formula": "",
          "nsites": null,
          "phase": "MG2SN_C1",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.3333333333333333
        },
        {
          "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": "MgSn-12Mie",
    "builder_version": 1,
    "engine": {
      "numpy": "2.5.1",
      "pycalphad": "0.11.2",
      "python": "3.13.15"
    },
    "fit_tol": 1.0,
    "observed_at": "2026-09-03T00:47:45Z",
    "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/MgSn-12Mie.tdb",
    "source_sha256": "c5854f47494b5707b4e3347498a7bebb48c783be3eddf100982ae85428b45196"
  },
  "reference": {
    "kind": "calphad_formation_T",
    "per": "mole_atoms",
    "temperature_K": 298.15,
    "units": "J/mol-atoms"
  },
  "schema_version": 1,
  "system_id": "MG-SN",
  "x_element": "SN"
}