{
  "counts": {
    "above_hull": 0,
    "entries": 5,
    "intervals": 4,
    "vertices": 5
  },
  "elements": [
    "FE",
    "GD"
  ],
  "flags": [
    "has_intermediate_phases"
  ],
  "isotherms": [
    {
      "element_reference": {
        "FE": {
          "energy": -8133.457534375769,
          "phase": "BCC_A2"
        },
        "GD": {
          "energy": -20258.758094499462,
          "phase": "HCP_A3"
        }
      },
      "intervals": [
        {
          "enthalpy": {
            "intercept": 0.0,
            "slope": -52529.69508119182
          },
          "entropy": {
            "intercept": 0.0,
            "slope": -77.96946677879765
          },
          "intercept": 0.0,
          "kind": "two_phase",
          "left": {
            "phase": "BCC_A2",
            "x": 0.0
          },
          "mu_a_rel": 0.0,
          "mu_b_rel": -29283.098561093368,
          "right": {
            "phase": "FE17GD2_LT",
            "x": 0.10526315789473684
          },
          "slope": -29283.098561093368,
          "x_hi": 0.10526315789473684,
          "x_lo": 0.0
        },
        {
          "enthalpy": {
            "intercept": -4837.424077251288,
            "slope": -6574.166347304594
          },
          "entropy": {
            "intercept": -11.565765327171471,
            "slope": 31.905303829331334
          },
          "intercept": -1389.0911449551215,
          "kind": "two_phase",
          "left": {
            "phase": "FE17GD2_LT",
            "x": 0.10526315789473684
          },
          "mu_a_rel": -1389.0911449551215,
          "mu_b_rel": -17475.823828974833,
          "right": {
            "phase": "FE23GD6_D8A",
            "x": 0.20689655172413793
          },
          "slope": -16086.732684019713,
          "x_hi": 0.20689655172413793,
          "x_lo": 0.10526315789473684
        },
        {
          "enthalpy": {
            "intercept": -6192.869216736433,
            "slope": -22.848173126388332
          },
          "entropy": {
            "intercept": -5.676282369408154,
            "slope": 3.4394695334752985
          },
          "intercept": -4500.4856282973915,
          "kind": "two_phase",
          "left": {
            "phase": "FE23GD6_D8A",
            "x": 0.20689655172413793
          },
          "mu_a_rel": -4500.4856282973915,
          "mu_b_rel": -5548.811642829469,
          "right": {
            "phase": "FE2GD_C15",
            "x": 0.3333333333333333
          },
          "slope": -1048.326014532077,
          "x_hi": 0.3333333333333333,
          "x_lo": 0.20689655172413793
        },
        {
          "enthalpy": {
            "intercept": -9300.727911667844,
            "slope": 9300.727911667842
          },
          "entropy": {
            "intercept": -6.794688787374582,
            "slope": 6.794688787374581
          },
          "intercept": -7274.891449712124,
          "kind": "two_phase",
          "left": {
            "phase": "FE2GD_C15",
            "x": 0.3333333333333333
          },
          "mu_a_rel": -7274.891449712124,
          "mu_b_rel": 0.0,
          "right": {
            "phase": "HCP_A3",
            "x": 1.0
          },
          "slope": 7274.891449712124,
          "x_hi": 1.0,
          "x_lo": 0.3333333333333333
        }
      ],
      "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": -3082.4314274835124,
          "energy_per_atom": -3082.4314274835124,
          "enthalpy": -5529.441587493876,
          "entries_at_x": 1,
          "entropy": -8.207312292505016,
          "formula": "",
          "nsites": null,
          "phase": "FE17GD2_LT",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.10526315789473684
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -4717.380665786786,
          "energy_per_atom": -4717.380665786786,
          "enthalpy": -6197.596424969479,
          "entries_at_x": 1,
          "entropy": -4.964667983171886,
          "formula": "",
          "nsites": null,
          "phase": "FE23GD6_D8A",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.20689655172413793
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -4849.927633141417,
          "energy_per_atom": -4849.927633141417,
          "enthalpy": -6200.485274445229,
          "entries_at_x": 1,
          "entropy": -4.529792524916388,
          "formula": "",
          "nsites": null,
          "phase": "FE2GD_C15",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.3333333333333333
        },
        {
          "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": "FeGd-00Zin",
    "builder_version": 1,
    "engine": {
      "numpy": "2.5.1",
      "pycalphad": "0.11.2",
      "python": "3.13.15"
    },
    "fit_tol": 1.0,
    "observed_at": "2026-09-03T00:34:58Z",
    "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/FeGd-00Zin.tdb",
    "source_sha256": "c29d3c3fbef2ea498c8f2bc5a446fecf1db4447031f412115fe98c20a6acba00"
  },
  "reference": {
    "kind": "calphad_formation_T",
    "per": "mole_atoms",
    "temperature_K": 298.15,
    "units": "J/mol-atoms"
  },
  "schema_version": 1,
  "system_id": "FE-GD",
  "x_element": "GD"
}
