{
  "counts": {
    "above_hull": 0,
    "entries": 6,
    "intervals": 5,
    "vertices": 6
  },
  "elements": [
    "CS",
    "NA"
  ],
  "flags": [
    "has_intermediate_phases",
    "liquid_on_hull",
    "solution_phases"
  ],
  "isotherms": [
    {
      "element_reference": {
        "CS": {
          "energy": -25411.31956584213,
          "phase": "BCC_A2"
        },
        "NA": {
          "energy": -15295.094500498033,
          "phase": "BCC_A2"
        }
      },
      "intervals": [
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                0.0,
                0.5859022549502388,
                0.0028087409370912697,
                -0.0014083667865226746
              ]
            ],
            "knots": [
              0.0,
              3.91560417968668e-05
            ],
            "max_abs_error": 0.00020203740126983893
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                0.0,
                -1.4042708483322855e-05,
                2.767943120138275e-05,
                -1.3767095690788647e-05
              ]
            ],
            "knots": [
              0.0,
              3.91560417968668e-05
            ],
            "max_abs_error": 1.9751334622697385e-06
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              0.0,
              0.5900890887995849,
              -0.005443881646297388,
              0.0026962926552789312
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.0,
            3.91560417968668e-05
          ],
          "max_abs_error": 0.000386848716871252,
          "phase": "BCC_A2#1",
          "x_hi": 3.91560417968668e-05,
          "x_lo": 0.0
        },
        {
          "enthalpy": {
            "intercept": -8.187487769014847,
            "slope": 224097.9934498333
          },
          "entropy": {
            "intercept": -0.02713557276576556,
            "slope": 785.6968994438844
          },
          "intercept": -0.09701674889588002,
          "kind": "two_phase",
          "left": {
            "phase": "BCC_A2#1",
            "x": 3.91560417968668e-05
          },
          "mu_a_rel": -0.09701674889588002,
          "mu_b_rel": -10157.634136110386,
          "right": {
            "phase": "LIQUID",
            "x": 0.009478167846194993
          },
          "slope": -10157.53711936149,
          "x_hi": 0.009478167846194993,
          "x_lo": 3.91560417968668e-05
        },
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                2115.8509081440116,
                201.18909279333712,
                -44.42800725553727,
                15.912573714483841
              ],
              [
                2288.524567396295,
                160.0784626410605,
                3.254738177391971,
                5.599761229065791
              ],
              [
                2457.4575294438137,
                183.39281707702696,
                19.574493742144256,
                -1.919114197903724
              ],
              [
                2658.505726065081,
                216.78800054321295,
                13.04611652972659,
                -6.6440247523069615
              ]
            ],
            "knots": [
              0.009478167846194993,
              0.10614315479923223,
              0.20280813570954664,
              0.2994731166198611,
              0.39613810301933533
            ],
            "max_abs_error": 0.1753417992854338
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                6.9742623173104725,
                0.2312067949940576,
                -0.2838344084754818,
                0.07054849176342895
              ],
              [
                6.99218319559248,
                -0.1247895206837484,
                -0.07174055555663725,
                0.0342342241701061
              ],
              [
                6.8298873435222,
                -0.16554843576706454,
                0.029922748952332795,
                0.007994720362535263
              ],
              [
                6.702256377070001,
                -0.08170688456715351,
                0.05185776092250243,
                -0.008172886174739482
              ]
            ],
            "knots": [
              0.009478167846194993,
              0.10614315479923223,
              0.20280813570954664,
              0.2994731166198611,
              0.39613810301933533
            ],
            "max_abs_error": 0.0006193130350977682
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              36.47459823789373,
              264.5095654641449,
              159.4342942371748,
              -39.29183996653853
            ],
            [
              421.1266179726749,
              465.5021796180806,
              42.48578055746583,
              -34.36023635827945
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.009478167846194993,
            0.20280813570954664,
            0.39613810301933533
          ],
          "max_abs_error": 0.12866693209542746,
          "phase": "LIQUID",
          "x_hi": 0.39613810301933533,
          "x_lo": 0.009478167846194993
        },
        {
          "enthalpy": {
            "intercept": 4762.481543083879,
            "slope": -4747.803128158983
          },
          "entropy": {
            "intercept": 20.240549017636397,
            "slope": -20.179483331789076
          },
          "intercept": -1272.238146524415,
          "kind": "two_phase",
          "left": {
            "phase": "LIQUID",
            "x": 0.39613810301933533
          },
          "mu_a_rel": -1272.238146524415,
          "mu_b_rel": -3.5283193104833117,
          "right": {
            "phase": "BCC_A2#2",
            "x": 0.9985652531269544
          },
          "slope": 1268.7098272139317,
          "x_hi": 0.9985652531269544,
          "x_lo": 0.39613810301933533
        },
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                21.490310616858338,
                -21.45944813788206,
                -0.032272425508946156,
                0.001409946532668016
              ]
            ],
            "knots": [
              0.9985652531269544,
              1.0
            ],
            "max_abs_error": 0.00020226959984182002
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                1.90270354027966e-07,
                -3.511408948993135e-07,
                -1.9799288502502468e-05,
                1.9960159043373813e-05
              ]
            ],
            "knots": [
              0.9985652531269544,
              1.0
            ],
            "max_abs_error": 2.8701063112987116e-06
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              21.490253887751724,
              -21.45934344524008,
              -0.026369267198663948,
              -0.00454117531298337
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.9985652531269544,
            1.0
          ],
          "max_abs_error": 0.000653452658096576,
          "phase": "BCC_A2#2",
          "x_hi": 1.0,
          "x_lo": 0.9985652531269544
        }
      ],
      "phase_instances": {
        "BCC_A2#1": "BCC_A2",
        "BCC_A2#2": "BCC_A2"
      },
      "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#1",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.0
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.4947456968948245,
          "energy_per_atom": -0.4947456968948245,
          "enthalpy": 0.5873026291008073,
          "entries_at_x": 1,
          "entropy": 0.0036292078685278284,
          "formula": "",
          "nsites": null,
          "phase": "BCC_A2#1",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 3.91560417968668e-05
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -96.37185847016008,
          "energy_per_atom": -96.37185847016008,
          "enthalpy": 2115.8509081440116,
          "entries_at_x": 1,
          "entropy": 7.419831516398361,
          "formula": "",
          "nsites": null,
          "phase": "LIQUID",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.009478167846194993
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -769.6538422898993,
          "energy_per_atom": -769.6538422898993,
          "enthalpy": 2881.695818385713,
          "entries_at_x": 1,
          "entropy": 12.246686770671175,
          "formula": "",
          "nsites": null,
          "phase": "LIQUID",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.39613810301933533
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -5.348596767880736,
          "energy_per_atom": -5.348596767880736,
          "enthalpy": 21.490310616858338,
          "entries_at_x": 1,
          "entropy": 0.09001813645728163,
          "formula": "",
          "nsites": null,
          "phase": "BCC_A2#2",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.9985652531269544
        },
        {
          "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#2",
          "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": "CsNa-85Pot-LB",
    "builder_version": 1,
    "engine": {
      "numpy": "2.5.1",
      "pycalphad": "0.11.2",
      "python": "3.13.15"
    },
    "fit_tol": 1.0,
    "observed_at": "2026-09-03T00:30:01Z",
    "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/CsNa-85Pot-LB.tdb",
    "source_sha256": "9981a10f6531bcccf5a3ed4cc035ac3b9b286ec3abf28d304a3ef665bb2b620b"
  },
  "reference": {
    "kind": "calphad_formation_T",
    "per": "mole_atoms",
    "temperature_K": 298.15,
    "units": "J/mol-atoms"
  },
  "schema_version": 1,
  "system_id": "CS-NA",
  "x_element": "NA"
}
