{
  "counts": {
    "above_hull": 0,
    "entries": 4,
    "intervals": 3,
    "vertices": 4
  },
  "elements": [
    "BA",
    "SR"
  ],
  "flags": [
    "no_intermediate_phases",
    "solution_phases"
  ],
  "isotherms": [
    {
      "element_reference": {
        "BA": {
          "energy": -18634.37491739282,
          "phase": "BCC_A2"
        },
        "SR": {
          "energy": -16605.166366454978,
          "phase": "FCC_A1"
        }
      },
      "intervals": [
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                0.0,
                -107.52961456127967,
                571.3615516763643,
                5.0529492227724404e-05
              ]
            ],
            "knots": [
              0.0,
              0.6171772402141852
            ],
            "max_abs_error": 5.292239052323566e-06
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                0.0,
                1.0922467976642731,
                -0.00017329161522172676,
                6.869846830803716e-05
              ]
            ],
            "knots": [
              0.0,
              0.6171772402141852
            ],
            "max_abs_error": 7.689883489037097e-06
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              0.0,
              -433.1829972849886,
              571.4132185713713,
              -0.020431918653798675
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.0,
            0.6171772402141852
          ],
          "max_abs_error": 0.0022934094480859812,
          "phase": "BCC_A2",
          "x_hi": 0.6171772402141852,
          "x_lo": 0.0
        },
        {
          "enthalpy": {
            "intercept": 1628.8855950319048,
            "slope": -1887.7131745542135
          },
          "entropy": {
            "intercept": 15.363108065426138,
            "slope": -14.15846183816853
          },
          "intercept": -2951.625074674885,
          "kind": "two_phase",
          "left": {
            "phase": "BCC_A2",
            "x": 0.6171772402141852
          },
          "mu_a_rel": -2951.625074674885,
          "mu_b_rel": -617.9928521791676,
          "right": {
            "phase": "FCC_A1",
            "x": 0.798696490900333
          },
          "slope": 2333.6322224957175,
          "x_hi": 0.798696490900333,
          "x_lo": 0.6171772402141852
        },
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                121.17570668912681,
                -181.9603611532628,
                60.78462626498171,
                2.819915425789077e-05
              ]
            ],
            "knots": [
              0.798696490900333,
              1.0
            ],
            "max_abs_error": 4.045513865236217e-06
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                -0.12076351670132102,
                0.12077173294795687,
                3.145325184791825e-06,
                -1.1361571820647787e-05
              ]
            ],
            "knots": [
              0.798696490900333,
              1.0
            ],
            "max_abs_error": 7.72109214175476e-07
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              157.1813491936257,
              -217.96845333158117,
              60.78368848653372,
              0.0034156514217613676
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.798696490900333,
            1.0
          ],
          "max_abs_error": 0.000233895125219874,
          "phase": "FCC_A1",
          "x_hi": 1.0,
          "x_lo": 0.798696490900333
        }
      ],
      "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": -1511.3603799200828,
          "energy_per_atom": -1511.3603799200828,
          "enthalpy": 463.831987644577,
          "entries_at_x": 1,
          "entropy": 6.624827662467425,
          "formula": "",
          "nsites": null,
          "phase": "BCC_A2",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.6171772402141852
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -1087.7612075156103,
          "energy_per_atom": -1087.7612075156103,
          "enthalpy": 121.17570668912681,
          "entries_at_x": 1,
          "entropy": 4.054794278734654,
          "formula": "",
          "nsites": null,
          "phase": "FCC_A1",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.798696490900333
        },
        {
          "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": 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": "BaSr-87Alc",
    "builder_version": 1,
    "engine": {
      "numpy": "2.5.1",
      "pycalphad": "0.11.2",
      "python": "3.13.15"
    },
    "fit_tol": 1.0,
    "observed_at": "2026-09-03T00:18:11Z",
    "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/BaSr-87Alc.tdb",
    "source_sha256": "d321a835b5ef863c352f2ada30d78842997d7b5131de49712d53f39e3a1500e9"
  },
  "reference": {
    "kind": "calphad_formation_T",
    "per": "mole_atoms",
    "temperature_K": 298.15,
    "units": "J/mol-atoms"
  },
  "schema_version": 1,
  "system_id": "BA-SR",
  "x_element": "SR"
}