{
  "counts": {
    "above_hull": 25,
    "entries": 84,
    "intervals": 8,
    "vertices": 9
  },
  "elements": [
    "AU",
    "GD"
  ],
  "flags": [
    "has_intermediate_compounds",
    "mp_agreement_not_comparable",
    "theoretical_vertices"
  ],
  "isotherms": [
    {
      "intervals": [
        {
          "intercept": 0.0,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-636382",
            "x": 0.0
          },
          "mu_a_rel": 0.0,
          "mu_b_rel": -2.957539403750001,
          "right": {
            "phase": "oqmd-659679",
            "x": 0.14285714285714285
          },
          "slope": -2.957539403750001,
          "x_hi": 0.14285714285714285,
          "x_lo": 0.0
        },
        {
          "intercept": -0.01694529812500073,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-659679",
            "x": 0.14285714285714285
          },
          "mu_a_rel": -0.01694529812500073,
          "mu_b_rel": -2.855867614999997,
          "right": {
            "phase": "oqmd-1370337",
            "x": 0.2
          },
          "slope": -2.838922316874996,
          "x_hi": 0.2,
          "x_lo": 0.14285714285714285
        },
        {
          "intercept": -0.06810056000000009,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-1370337",
            "x": 0.2
          },
          "mu_a_rel": -0.06810056000000009,
          "mu_b_rel": -2.6512465674999994,
          "right": {
            "phase": "oqmd-28163",
            "x": 0.25
          },
          "slope": -2.5831460074999995,
          "x_hi": 0.25,
          "x_lo": 0.2
        },
        {
          "intercept": -0.30469748500000005,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-28163",
            "x": 0.25
          },
          "mu_a_rel": -0.30469748500000005,
          "mu_b_rel": -1.9414557924999998,
          "right": {
            "phase": "oqmd-1895436",
            "x": 0.3333333333333333
          },
          "slope": -1.6367583074999996,
          "x_hi": 0.3333333333333333,
          "x_lo": 0.25
        },
        {
          "intercept": -0.8069898924999983,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-1895436",
            "x": 0.3333333333333333
          },
          "mu_a_rel": -0.8069898924999983,
          "mu_b_rel": -0.9368709775000033,
          "right": {
            "phase": "oqmd-1799713",
            "x": 0.42857142857142855
          },
          "slope": -0.1298810850000049,
          "x_hi": 0.42857142857142855,
          "x_lo": 0.3333333333333333
        },
        {
          "intercept": -0.8469031300000022,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-1799713",
            "x": 0.42857142857142855
          },
          "mu_a_rel": -0.8469031300000022,
          "mu_b_rel": -0.8836533274999979,
          "right": {
            "phase": "oqmd-28162",
            "x": 0.5
          },
          "slope": -0.03675019749999574,
          "x_hi": 0.5,
          "x_lo": 0.42857142857142855
        },
        {
          "intercept": -1.6184049699999994,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-28162",
            "x": 0.5
          },
          "mu_a_rel": -1.6184049699999994,
          "mu_b_rel": -0.11215148750000092,
          "right": {
            "phase": "oqmd-1374201",
            "x": 0.6666666666666666
          },
          "slope": 1.5062534824999985,
          "x_hi": 0.6666666666666666,
          "x_lo": 0.5
        },
        {
          "intercept": -1.8427079450000008,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-1374201",
            "x": 0.6666666666666666
          },
          "mu_a_rel": -1.8427079450000008,
          "mu_b_rel": 2.220446049250313e-16,
          "right": {
            "phase": "oqmd-9623",
            "x": 1.0
          },
          "slope": 1.842707945000001,
          "x_hi": 1.0,
          "x_lo": 0.6666666666666666
        }
      ],
      "temperature_K": 0.0,
      "vertices": [
        {
          "collinear": false,
          "degenerate": [],
          "energy": 0.0,
          "energy_per_atom": -3.26680174,
          "entries_at_x": 32,
          "formula": "Au1",
          "nsites": 1,
          "phase": "oqmd-636382",
          "phase_kind": "structure",
          "spacegroup_number": 225,
          "spacegroup_symbol": "Fm-3m",
          "theoretical": false,
          "x": 0.0
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.422505629107143,
          "energy_per_atom": -3.88763159089286,
          "entries_at_x": 2,
          "formula": "Au6 Gd1",
          "nsites": 56,
          "phase": "oqmd-659679",
          "phase_kind": "structure",
          "spacegroup_number": 138,
          "spacegroup_symbol": "P42/ncm",
          "theoretical": false,
          "x": 0.14285714285714285
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.5847297615,
          "energy_per_atom": -4.129185412,
          "entries_at_x": 1,
          "formula": "Au4 Gd1",
          "nsites": 5,
          "phase": "oqmd-1370337",
          "phase_kind": "structure",
          "spacegroup_number": 87,
          "spacegroup_symbol": "I4/m",
          "theoretical": true,
          "x": 0.2
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.713887061875,
          "energy_per_atom": -4.32775619,
          "entries_at_x": 5,
          "formula": "Au3 Gd1",
          "nsites": 8,
          "phase": "oqmd-28163",
          "phase_kind": "structure",
          "spacegroup_number": 59,
          "spacegroup_symbol": "Pmmn",
          "theoretical": false,
          "x": 0.25
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.8502835874999999,
          "energy_per_atom": -4.579841845,
          "entries_at_x": 3,
          "formula": "Au2 Gd1",
          "nsites": 6,
          "phase": "oqmd-1895436",
          "phase_kind": "structure",
          "spacegroup_number": 99,
          "spacegroup_symbol": "P4mm",
          "theoretical": true,
          "x": 0.3333333333333333
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.8626532146428575,
          "energy_per_atom": -4.72442762,
          "entries_at_x": 1,
          "formula": "Au4 Gd3",
          "nsites": 14,
          "phase": "oqmd-1799713",
          "phase_kind": "structure",
          "spacegroup_number": 148,
          "spacegroup_symbol": "R-3",
          "theoretical": true,
          "x": 0.42857142857142855
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.86527822875,
          "energy_per_atom": -4.826214745,
          "entries_at_x": 9,
          "formula": "Au1 Gd1",
          "nsites": 4,
          "phase": "oqmd-28162",
          "phase_kind": "structure",
          "spacegroup_number": 63,
          "spacegroup_symbol": "Cmcm",
          "theoretical": false,
          "x": 0.5
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.614235981666667,
          "energy_per_atom": -4.806550756666667,
          "entries_at_x": 3,
          "formula": "Au1 Gd2",
          "nsites": 12,
          "phase": "oqmd-1374201",
          "phase_kind": "structure",
          "spacegroup_number": 62,
          "spacegroup_symbol": "Pnma",
          "theoretical": true,
          "x": 0.6666666666666666
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": 0.0,
          "energy_per_atom": -4.6550712925,
          "entries_at_x": 19,
          "formula": "Gd1",
          "nsites": 4,
          "phase": "oqmd-9623",
          "phase_kind": "structure",
          "spacegroup_number": 194,
          "spacegroup_symbol": "P63/mmc",
          "theoretical": false,
          "x": 1.0
        }
      ]
    }
  ],
  "mp_agreement": {
    "comparable": false,
    "comparable_note": "is_stable is derived by the extraction, not an upstream flag, so comparing it against a hull recomputed from the same energies tests the derivation rather than the data",
    "max_abs_delta_energy_above_hull": 5.407471137530706e-10,
    "only_mp_stable": [
      "oqmd-ref-Au",
      "oqmd-ref-Gd"
    ],
    "only_ours_stable": [],
    "stable_sets_match": false
  },
  "provenance": {
    "above_hull_window_eV": 0.05,
    "builder_version": 1,
    "collinear_tol": 1e-12,
    "correction_model": "OQMD fit-partial ('standard' fit, applied upstream by OQMD; none added)",
    "degenerate_tol": 1e-06,
    "entry_pool": "all_nondeprecated",
    "is_stable_source": "derived",
    "observed_at": "2026-09-05T17:02:03Z",
    "snapshot_scope_elements": [],
    "snapshot_scope_kind": "full",
    "snapshot_sha256": "2a9393262c52ec35600424236c352a4cdb3291c8b25c1c6588f5e62abe8e0d8d",
    "source_release": "qmdb_v1_8_022026",
    "stability_tol": 0.0001,
    "thermo_type": "standard",
    "upstream_energy_corrections": "OQMD 'standard' fit (fit-partial of Kirklin et al. 2015): elemental reference energies of a subset of elements fitted to experimental formation enthalpies, applied by OQMD"
  },
  "reference": {
    "kind": "dft_fitted_elemental_reference_0K",
    "per": "atom",
    "temperature_K": 0.0,
    "units": "eV/atom"
  },
  "schema_version": 1,
  "system_id": "AU-GD",
  "x_element": "GD"
}