{
  "counts": {
    "above_hull": 0,
    "entries": 7,
    "intervals": 6,
    "vertices": 7
  },
  "elements": [
    "AL",
    "MG"
  ],
  "flags": [
    "has_intermediate_phases",
    "solution_phases"
  ],
  "isotherms": [
    {
      "element_reference": {
        "AL": {
          "energy": -8437.646013416432,
          "phase": "FCC_A1"
        },
        "MG": {
          "energy": -9740.858454910558,
          "phase": "HCP_A3"
        }
      },
      "intervals": [
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                0.0,
                49.18489765020003,
                -0.33707592996569957,
                0.0007414218191783561
              ]
            ],
            "knots": [
              0.0,
              0.0052208685607791445
            ],
            "max_abs_error": 0.0001409073632352431
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                0.0,
                0.020747421526565026,
                -2.8461618347616624e-05,
                -1.546608638850963e-05
              ]
            ],
            "knots": [
              0.0,
              0.0052208685607791445
            ],
            "max_abs_error": 2.5194219615762292e-06
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              0.0,
              42.99905392245477,
              -0.3285900997896505,
              0.005352636414578171
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.0,
            0.0052208685607791445
          ],
          "max_abs_error": 0.0006102583037765896,
          "phase": "FCC_A1",
          "x_hi": 0.0052208685607791445,
          "x_lo": 0.0
        },
        {
          "enthalpy": {
            "intercept": 63.26720830778768,
            "slope": -2761.7330330917966
          },
          "entropy": {
            "intercept": 0.2546561672297295,
            "slope": 7.1749185663343695
          },
          "intercept": -12.658527951751587,
          "kind": "two_phase",
          "left": {
            "phase": "FCC_A1",
            "x": 0.0052208685607791445
          },
          "mu_a_rel": -12.658527951751587,
          "mu_b_rel": -4913.593531596156,
          "right": {
            "phase": "ALMG_BETA",
            "x": 0.3850000000000001
          },
          "slope": -4900.935003644405,
          "x_hi": 0.3850000000000001,
          "x_lo": 0.0052208685607791445
        },
        {
          "enthalpy": {
            "intercept": 881.4703784084622,
            "slope": -4886.936072314327
          },
          "entropy": {
            "intercept": 4.841578258816265,
            "slope": -4.739164788435848
          },
          "intercept": -562.0461794576104,
          "kind": "two_phase",
          "left": {
            "phase": "ALMG_BETA",
            "x": 0.3850000000000001
          },
          "mu_a_rel": -562.0461794576104,
          "mu_b_rel": -4036.000270099785,
          "right": {
            "phase": "AL12MG17_A12",
            "x": 0.5333092393511626
          },
          "slope": -3473.954090642175,
          "x_hi": 0.5333092393511626,
          "x_lo": 0.3850000000000001
        },
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                -1724.7777810752498,
                -19.8022349075907,
                0.07059594347398601,
                0.0002523141079429081
              ],
              [
                -1744.5091677252592,
                -32.767192526816906,
                0.19953152635191174,
                0.0022977578429888013
              ],
              [
                -1777.0745309678812,
                -32.361263687218134,
                -4.0938161969452835,
                4.238431412899047
              ],
              [
                -1809.2911794391455,
                -27.744752455432376,
                8.257016771848498,
                0.47309505780970085
              ],
              [
                -1828.3058200649193,
                -51.42261968347449,
                51.21942857909853,
                -33.57215931998162
              ],
              [
                -1862.0811704892767,
                -22.565464919937202,
                22.228853203653898,
                -18.475784510695348
              ],
              [
                -1880.8935667162557,
                -17.08036670800255,
                -34.74203091807753,
                20.837742539288723
              ],
              [
                -1911.8782218030472,
                -0.313944111125705,
                -44.18688219525352,
                28.43466806288329
              ],
              [
                -1927.9443800465426,
                -26.796849118949464,
                -8.532927310103787,
                8.87479182820698
              ],
              [
                -1954.3993646473896,
                7.097123307608636,
                -47.00608366553314,
                19.075941407660306
              ],
              [
                -1975.232383597653,
                -7.063131436801199,
                20.165538791033796,
                -49.31598508341325
              ],
              [
                -2011.4459613268336,
                21.191415809973446,
                -54.206664142248954,
                27.03036192173256
              ],
              [
                -2017.4308477373768,
                -45.78544788610987,
                27.144711275785763,
                4.361822026245822
              ],
              [
                -2031.7097623214545,
                -116.28662694424203,
                188.62758304782022,
                -92.08811247519175
              ],
              [
                -2051.456918693069,
                -15.351269876286278,
                6.471157876144901,
                2.7501224249803604
              ],
              [
                -2057.5869082682293,
                3.5619083022021565,
                6.104002577377575,
                0.142931134191425
              ]
            ],
            "knots": [
              0.5333092393511626,
              0.5358148690804349,
              0.5399909225725736,
              0.5441669760647124,
              0.5466726081599956,
              0.5508486616521344,
              0.5533542937474176,
              0.5575303472395564,
              0.5600359793348397,
              0.5633768221285507,
              0.5667176649222617,
              0.5708937184144004,
              0.5733993505096837,
              0.5759049826049669,
              0.5800810360971057,
              0.5842570895892445,
              0.5867627175389774
            ],
            "max_abs_error": 13.427461742794321
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                -3.430544877413708,
                -0.034440941017111995,
                -0.0005789570935331029,
                -2.7630946830142777e-06
              ],
              [
                -3.4655675386190365,
                -0.05934519497677946,
                -0.001646037496721875,
                -2.2241828414926168e-05
              ],
              [
                -3.5265810129209516,
                -0.06270388255973758,
                -0.016248334184044866,
                0.014272217241258767
              ],
              [
                -3.591261012423475,
                -0.0691610401272298,
                0.027378596036920392,
                0.001602578121995265
              ],
              [
                -3.631440878391789,
                -0.13620719730966124,
                0.17293583302077406,
                -0.11512756695358303
              ],
              [
                -3.709839809634258,
                -0.056590609015463755,
                0.07514341698246164,
                -0.06333059723232283
              ],
              [
                -3.754617598899583,
                -0.027168775640396374,
                -0.12272102479886883,
                0.07167112623999096
              ],
              [
                -3.8328362730988585,
                0.013848160641765701,
                -0.15283588060258063,
                0.09764933832406082
              ],
              [
                -3.8741746547356115,
                -0.07512908194519952,
                -0.0320139127436807,
                0.030665926235442946
              ],
              [
                -3.950651723189049,
                0.03636714732125711,
                -0.16353313880303716,
                0.06514536354060536
              ],
              [
                -4.012672351130224,
                -0.016220712647840866,
                0.06988700794727215,
                -0.1752531695367287
              ],
              [
                -4.13425922536752,
                0.07696285402083647,
                -0.19430963837490428,
                0.09516624780767086
              ],
              [
                -4.1564397619139175,
                -0.1622673409157871,
                0.09134131142080193,
                0.01491162514334654
              ],
              [
                -4.212454166265556,
                -0.41635544620817866,
                0.6436419503157853,
                -0.31847978679169087
              ],
              [
                -4.303647448949643,
                -0.08468895552642634,
                0.012248508056922902,
                0.008356852306723339
              ],
              [
                -4.367731044112422,
                -0.020900842049864164,
                0.015987550799770933,
                0.0004566804393048591
              ]
            ],
            "knots": [
              0.5333092393511626,
              0.5358148690804349,
              0.5399909225725736,
              0.5441669760647124,
              0.5466726081599956,
              0.5508486616521344,
              0.5533542937474176,
              0.5575303472395564,
              0.5600359793348397,
              0.5633768221285507,
              0.5667176649222617,
              0.5708937184144004,
              0.5733993505096837,
              0.5759049826049669,
              0.5800810360971057,
              0.5842570895892445,
              0.5867627175389774
            ],
            "max_abs_error": 0.046318715688808076
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              -701.9608258743538,
              -50.84627017505118,
              7.868391252506704,
              -0.6530173755107498
            ],
            [
              -745.5917221724087,
              -34.59982017802716,
              7.231578496275983,
              0.10075711703727919
            ],
            [
              -772.8592067371228,
              -17.58845334789141,
              10.293073401690286,
              1.9662539605791736
            ],
            [
              -778.1883327227449,
              13.837648016298777,
              7.6536561514449915,
              12.486711615895203
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.5333092393511626,
            0.5466726081599956,
            0.5600359793348397,
            0.5733993505096837,
            0.5867627175389774
          ],
          "max_abs_error": 0.6139598590783635,
          "phase": "AL12MG17_A12",
          "x_hi": 0.5867627175389774,
          "x_lo": 0.5333092393511626
        },
        {
          "enthalpy": {
            "intercept": -5009.782251968256,
            "slope": 5048.044289755063
          },
          "entropy": {
            "intercept": 2.8485803786362847,
            "slope": -2.6985973662678986
          },
          "intercept": -5859.08649185867,
          "kind": "two_phase",
          "left": {
            "phase": "AL12MG17_A12",
            "x": 0.5867627175389774
          },
          "mu_a_rel": -5859.08649185867,
          "mu_b_rel": -6.4553973508272975,
          "right": {
            "phase": "HCP_A3",
            "x": 0.9973538472546529
          },
          "slope": 5852.631094507843,
          "x_hi": 0.9973538472546529,
          "x_lo": 0.5867627175389774
        },
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                24.90414153083729,
                -24.799974728763715,
                -0.10459304333955544,
                0.0004262412659841175
              ]
            ],
            "knots": [
              0.9973538472546529,
              1.0
            ],
            "max_abs_error": 0.00012742692154965596
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                0.0045815024848485375,
                -0.004611116285768433,
                1.3189252941529957e-05,
                1.6424547978365935e-05
              ]
            ],
            "knots": [
              0.9973538472546529,
              1.0
            ],
            "max_abs_error": 2.3574510073507467e-06
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              23.5381665649808,
              -23.425170408124618,
              -0.10852541897377677,
              -0.004470737882403597
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.9973538472546529,
            1.0
          ],
          "max_abs_error": 0.0005754471295400521,
          "phase": "HCP_A3",
          "x_hi": 1.0,
          "x_lo": 0.9973538472546529
        }
      ],
      "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": "FCC_A1",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.0
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -38.24566543070068,
          "energy_per_atom": -38.24566543070068,
          "enthalpy": 48.84856314205349,
          "entries_at_x": 1,
          "entropy": 0.2921154739988552,
          "formula": "",
          "nsites": null,
          "phase": "FCC_A1",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.0052208685607791445
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -1899.5185043548481,
          "energy_per_atom": -1899.5185043548481,
          "enthalpy": -1000.0000094325544,
          "entries_at_x": 1,
          "entropy": 3.0169998152684627,
          "formula": "",
          "nsites": null,
          "phase": "ALMG_BETA",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.3850000000000001
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -2414.7379930788484,
          "energy_per_atom": -2414.7379930788484,
          "enthalpy": -1724.7777810752498,
          "entries_at_x": 1,
          "entropy": 2.3141378903357293,
          "formula": "",
          "nsites": null,
          "phase": "AL12MG17_A12",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.5333092393511626
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -2424.9807660921288,
          "energy_per_atom": -2424.9807660921288,
          "enthalpy": -2047.7780662544587,
          "entries_at_x": 1,
          "entropy": 1.2651440544614054,
          "formula": "",
          "nsites": null,
          "phase": "AL12MG17_A12",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.5867627175389774
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -21.942353189062487,
          "energy_per_atom": -21.942353189062487,
          "enthalpy": 24.90414153083729,
          "entries_at_x": 1,
          "entropy": 0.15712391319772223,
          "formula": "",
          "nsites": null,
          "phase": "HCP_A3",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.9973538472546529
        },
        {
          "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": 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": "AlMg-90Sau",
    "builder_version": 1,
    "engine": {
      "numpy": "2.5.1",
      "pycalphad": "0.11.2",
      "python": "3.13.15"
    },
    "fit_tol": 1.0,
    "observed_at": "2026-09-03T00:11:33Z",
    "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/AlMg-90Sau.tdb",
    "source_sha256": "44413666c4d65298823e124b2e15fd36d50f670b927fa3516f424e5b23783e39"
  },
  "reference": {
    "kind": "calphad_formation_T",
    "per": "mole_atoms",
    "temperature_K": 298.15,
    "units": "J/mol-atoms"
  },
  "schema_version": 1,
  "system_id": "AL-MG",
  "x_element": "MG"
}