{
  "counts": {
    "above_hull": 0,
    "entries": 4,
    "intervals": 3,
    "vertices": 4
  },
  "elements": [
    "CR",
    "FE"
  ],
  "flags": [
    "miscibility_gap",
    "no_intermediate_phases",
    "solution_phases"
  ],
  "isotherms": [
    {
      "element_reference": {
        "CR": {
          "energy": -7019.328340651215,
          "phase": "BCC_A2"
        },
        "FE": {
          "energy": -8133.457544009002,
          "phase": "BCC_A2"
        }
      },
      "intervals": [
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                0.0,
                2.3022731492521813,
                -0.0006898341855183787,
                -6.543531690583748e-05
              ],
              [
                2.3015178797497575,
                2.300671379675854,
                -0.0008495632652940621,
                -9.041385937713642e-07
              ],
              [
                4.601338792021724,
                2.298969541946873,
                -0.0008544526431797372,
                -9.098248807681841e-07
              ],
              [
                6.899452971500534,
                2.2972579083016407,
                -0.0008593722932004333,
                -9.157495477474242e-07
              ],
              [
                9.195850591759427,
                3.0607152238545687,
                -0.001536081574920356,
                -2.95088845314595e-06
              ],
              [
                12.255026783150623,
                3.057634209433232,
                -0.0015478983361925103,
                -2.9758895498943616e-06
              ],
              [
                15.311110118358105,
                2.2908971148586836,
                -0.0008776779449171102,
                -9.369185924867907e-07
              ],
              [
                17.60112861835328,
                2.289138949370393,
                -0.0008827444135484086,
                -9.425254567929642e-07
              ],
              [
                19.889383880784674,
                2.287370634024174,
                -0.0008878425736180695,
                -9.485292200572815e-07
              ],
              [
                22.175865723706,
                2.2855921044412537,
                -0.0008929729883355719,
                -9.54629225446979e-07
              ],
              [
                24.460563900529703,
                2.283803295732589,
                -0.0008981356969606225,
                -9.609554290079814e-07
              ],
              [
                26.743468099609892,
                2.282004142636371,
                -0.000903331550013764,
                -9.670956440110956e-07
              ],
              [
                29.024567943600612,
                3.8003242990528148,
                -0.002522472779057594,
                -6.82642710891912e-06
              ],
              [
                32.82236294344725,
                3.0735349000237964,
                -4.876227152114382,
                2.2349374420467
              ],
              [
                33.254608133403366,
                0.020714337264479202,
                3.886604672126426e-07,
                -5.224655693220059e-07
              ],
              [
                33.275322336862736,
                0.01553570733876338,
                1.3394427754442884e-10,
                -9.813292366211979e-11
              ],
              [
                33.290858044237325,
                0.015535707266650338,
                1.6691723871142816e-10,
                -6.599174852406353e-11
              ],
              [
                33.3063937516049,
                0.01553570729008778,
                9.22603278497025e-11,
                -2.9775199666959296e-11
              ],
              [
                33.321929458957484,
                374.4589325548411,
                -690.2764588040588,
                339.94271204400775
              ]
            ],
            "knots": [
              0.0,
              8.918653227964246e-05,
              0.0001783720645592849,
              0.00026755759683892743,
              0.00035674312911856986,
              0.00047565717215809316,
              0.0005945712151976165,
              0.0006837567474772589,
              0.0007729422797569013,
              0.0008621278120365439,
              0.0009513133443161863,
              0.0010404988765958286,
              0.0011296844088754712,
              0.0012783269626748753,
              0.0014269695164742793,
              0.0015458835595138025,
              0.001635069091793445,
              0.0017242546240730876,
              0.00181344015635273,
              0.002510648410956151
            ],
            "max_abs_error": 15.683458366467462
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                0.0,
                0.002881868574405128,
                -1.741816034453534e-06,
                -5.42579616325499e-07
              ],
              [
                0.002879584178754349,
                0.002876725113116771,
                -3.0525970126137406e-06,
                -3.1764234133604963e-09
              ],
              [
                0.005753253518435093,
                0.002870610410790563,
                -3.0699444156993654e-06,
                -3.2907399864952336e-09
              ],
              [
                0.008620790694069971,
                0.002864460658649932,
                -3.0877792450765933e-06,
                -3.338163600142413e-09
              ],
              [
                0.01148216023531123,
                0.003811033457446618,
                -5.519692601050567e-06,
                -1.079597018163389e-08
              ],
              [
                0.015287663204186612,
                0.0037999616907739477,
                -5.562940160604504e-06,
                -1.0909890912555453e-08
              ],
              [
                0.019082051044909037,
                0.0028416023150113455,
                -3.1547683192745257e-06,
                -3.4385344016563124e-09
              ],
              [
                0.02192049515306671,
                0.0028352824673991937,
                -3.1733654918680854e-06,
                -3.4614990873649276e-09
              ],
              [
                0.024752600793474952,
                0.0028289253562382936,
                -3.192091123017937e-06,
                -3.485366398270351e-09
              ],
              [
                0.027578330573223828,
                0.0028225307224090082,
                -3.210944832475731e-06,
                -3.5093903100365254e-09
              ],
              [
                0.030397646841410053,
                0.002816098309096477,
                -3.229925719469822e-06,
                -3.5340600276941025e-09
              ],
              [
                0.03321051169072703,
                0.0028096278600357083,
                -3.2490358864954716e-06,
                -3.5579306202626615e-09
              ],
              [
                0.03601688695694563,
                0.004671865198430279,
                -9.073730940778457e-06,
                -2.5125463987141217e-08
              ],
              [
                0.040679653298971136,
                0.0022239069444393573,
                -0.016293796244474742,
                0.007498526083317993
              ],
              [
                0.034108290082253745,
                -0.006294494846409963,
                4.08101204482968e-05,
                -7.932099379522398e-07
              ],
              [
                0.02785381214635413,
                -0.004661444130524601,
                2.115064400694689e-05,
                -2.1597113211441893e-07
              ],
              [
                0.023213302688704363,
                -0.00461979522564223,
                2.0012775811372417e-05,
                -1.9363317586059553e-07
              ],
              [
                0.018613326605697644,
                -0.004580354398317769,
                1.8991236162481384e-05,
                -1.7458878126541677e-07
              ],
              [
                0.01405178885476109,
                1.2221244032272731,
                -2.318073853496665,
                1.1420719815876277
              ]
            ],
            "knots": [
              0.0,
              8.918653227964246e-05,
              0.0001783720645592849,
              0.00026755759683892743,
              0.00035674312911856986,
              0.00047565717215809316,
              0.0005945712151976165,
              0.0006837567474772589,
              0.0007729422797569013,
              0.0008621278120365439,
              0.0009513133443161863,
              0.0010404988765958286,
              0.0011296844088754712,
              0.0012783269626748753,
              0.0014269695164742793,
              0.0015458835595138025,
              0.001635069091793445,
              0.0017242546240730876,
              0.00181344015635273,
              0.002510648410956151
            ],
            "max_abs_error": 0.05269016731389663
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              0.0,
              40.6224585460231,
              0.9072929530743323,
              -2.0236098049274744
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.0,
            0.002510648410956151
          ],
          "max_abs_error": 0.08842931160557654,
          "phase": "BCC_A2#1",
          "x_hi": 0.002510648410956151,
          "x_lo": 0.0
        },
        {
          "enthalpy": {
            "intercept": 57.073617546168656,
            "slope": 148.76543682859437
          },
          "entropy": {
            "intercept": 0.20237259400441007,
            "slope": 1.4464180471810395
          },
          "intercept": -3.263771356244849,
          "kind": "two_phase",
          "left": {
            "phase": "BCC_A2#1",
            "x": 0.002510648410956151
          },
          "mu_a_rel": -3.263771356244849,
          "mu_b_rel": -285.7478752946782,
          "right": {
            "phase": "BCC_A2#2",
            "x": 0.9465095901699485
          },
          "slope": -282.48410393843335,
          "x_hi": 0.9465095901699485,
          "x_lo": 0.002510648410956151
        },
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                197.8815301902549,
                -376.29383171008817,
                160.4306252153983,
                17.98167630443502
              ]
            ],
            "knots": [
              0.9465095901699485,
              1.0
            ],
            "max_abs_error": 0.023733601706894092
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                -0.1635330939380646,
                0.06648052223391136,
                0.08596972561496702,
                0.011082846089186194
              ]
            ],
            "knots": [
              0.9465095901699485,
              1.0
            ],
            "max_abs_error": 2.2917652053533466e-05
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              246.6389221478894,
              -396.1149994145735,
              134.79875152432095,
              14.677325742363166
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.9465095901699485,
            1.0
          ],
          "max_abs_error": 0.01691625687578835,
          "phase": "BCC_A2#2",
          "x_hi": 1.0,
          "x_lo": 0.9465095901699485
        }
      ],
      "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": -3.9729896229182486,
          "energy_per_atom": -3.9729896229182486,
          "enthalpy": 57.44711525374756,
          "entries_at_x": 1,
          "entropy": 0.20600404117614346,
          "formula": "",
          "nsites": null,
          "phase": "BCC_A2#1",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.002510648410956151
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -270.63768480453655,
          "energy_per_atom": -270.63768480453655,
          "enthalpy": 197.8815301902549,
          "entries_at_x": 1,
          "entropy": 1.571421147056153,
          "formula": "",
          "nsites": null,
          "phase": "BCC_A2#2",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.9465095901699485
        },
        {
          "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": "CrFe-18Jac",
    "builder_version": 1,
    "engine": {
      "numpy": "2.5.1",
      "pycalphad": "0.11.2",
      "python": "3.13.15"
    },
    "fit_tol": 1.0,
    "observed_at": "2026-09-03T00:28:22Z",
    "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/CrFe-18Jac.tdb",
    "source_sha256": "97353b426c2d299a2d1b73107eb46563ba26c48fde727232f57b1930b5d512b8"
  },
  "reference": {
    "kind": "calphad_formation_T",
    "per": "mole_atoms",
    "temperature_K": 298.15,
    "units": "J/mol-atoms"
  },
  "schema_version": 1,
  "system_id": "CR-FE",
  "x_element": "FE"
}
