{
  "counts": {
    "above_hull": 0,
    "entries": 2,
    "intervals": 1,
    "vertices": 2
  },
  "elements": [
    "GD",
    "Y"
  ],
  "flags": [
    "no_intermediate_phases",
    "solution_phases"
  ],
  "isotherms": [
    {
      "element_reference": {
        "GD": {
          "energy": -20300.85856928726,
          "phase": "HCP_A3"
        },
        "Y": {
          "energy": -13353.412757152953,
          "phase": "HCP_A3"
        }
      },
      "intervals": [
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                0.0,
                308.5920455933527,
                -71.80488806131686,
                8.85112789546966
              ],
              [
                245.63828542750548,
                191.83582518630374,
                -40.489867930238944,
                3.752127142464275
              ],
              [
                400.7363698260345,
                244.4364694529903,
                -106.65486696841849,
                15.758142307359364
              ],
              [
                554.2761146179658,
                78.44511092195266,
                -59.083714047323205,
                7.69407270102834
              ],
              [
                581.3315841936234,
                -16.6201789395709,
                -35.19108861774235,
                4.377744121138093
              ],
              [
                533.8980607574483,
                -73.85622644131716,
                -21.573196971479092,
                2.2957221359522464
              ],
              [
                440.7643594806044,
                -110.10718259322549,
                -14.504884355862885,
                0.9653397222254512
              ],
              [
                317.1176322537413,
                -136.21653907732568,
                -11.606609845821907,
                0.25395537139709745
              ],
              [
                169.54843870199082,
                -158.6664987982279,
                -10.898207557647822,
                0.016267653884881383
              ]
            ],
            "knots": [
              0.0,
              0.062500000875,
              0.12500000075,
              0.25000000050000004,
              0.3750000002500001,
              0.5,
              0.62499999975,
              0.7499999995000001,
              0.87499999925,
              1.0
            ],
            "max_abs_error": 0.19179298166972103
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                0.0,
                0.7664649765070146,
                -0.20457403561249043,
                0.027298065039588093
              ],
              [
                0.5891890059341123,
                0.44015856062765546,
                -0.1083559475064853,
                0.011188189750540645
              ],
              [
                0.9321798088058229,
                0.5146787176793011,
                -0.2689847360337733,
                0.04456793126603714
              ],
              [
                1.222441721717388,
                0.11054068923740706,
                -0.1351113442925737,
                0.020886780917863168
              ],
              [
                1.2187578475800844,
                -0.09696719361285128,
                -0.07035121087400312,
                0.011765911500369791
              ],
              [
                1.0632053545935998,
                -0.20233720514150022,
                -0.03376078745294553,
                0.006160830846189569
              ],
              [
                0.8332681928453436,
                -0.2513541704320376,
                -0.014792830929573453,
                0.0025901598188197705
              ],
              [
                0.5697113513025522,
                -0.2731576136412208,
                -0.007016265687644074,
                0.0006810269396853585
              ],
              [
                0.2902184989133727,
                -0.2851432801524487,
                -0.005112636482560495,
                3.741772163651236e-05
              ]
            ],
            "knots": [
              0.0,
              0.062500000875,
              0.12500000075,
              0.25000000050000004,
              0.3750000002500001,
              0.5,
              0.62499999975,
              0.7499999995000001,
              0.87499999925,
              1.0
            ],
            "max_abs_error": 0.0005792987088300006
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              0.0,
              320.28204754787083,
              -162.11177907211118,
              31.634846812163303
            ],
            [
              189.80511528792294,
              90.97480885173356,
              -73.59091564460219,
              9.714375790312129
            ],
            [
              216.90338428536643,
              -27.05877745686668,
              -45.26704017257448,
              2.680626206960099
            ],
            [
              147.25819286288538,
              -109.54919357849434,
              -37.90930192871909,
              0.20030264432804756
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.0,
            0.25000000050000004,
            0.5,
            0.7499999995000001,
            1.0
          ],
          "max_abs_error": 0.7604753906405932,
          "phase": "HCP_A3",
          "x_hi": 1.0,
          "x_lo": 0.0
        }
      ],
      "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": 0.0,
          "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": "GdY-07Guo",
    "builder_version": 1,
    "engine": {
      "numpy": "2.5.1",
      "pycalphad": "0.11.2",
      "python": "3.13.15"
    },
    "fit_tol": 1.0,
    "observed_at": "2026-09-03T00:40:34Z",
    "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/GdY-07Guo.tdb",
    "source_sha256": "9c12c34c0087a00b70bfa84a5898f9e7038d23185ea19d950b7e4472d2d9fdaf"
  },
  "reference": {
    "kind": "calphad_formation_T",
    "per": "mole_atoms",
    "temperature_K": 298.15,
    "units": "J/mol-atoms"
  },
  "schema_version": 1,
  "system_id": "GD-Y",
  "x_element": "Y"
}