{
  "counts": {
    "above_hull": 22,
    "entries": 124,
    "intervals": 7,
    "vertices": 8
  },
  "elements": [
    "GE",
    "ZR"
  ],
  "flags": [
    "degenerate_endpoints",
    "has_intermediate_compounds",
    "mp_agreement_not_comparable",
    "theoretical_vertices"
  ],
  "isotherms": [
    {
      "intervals": [
        {
          "intercept": 0.0,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-7651",
            "x": 0.0
          },
          "mu_a_rel": 0.0,
          "mu_b_rel": -1.795394175000003,
          "right": {
            "phase": "oqmd-3541",
            "x": 0.3333333333333333
          },
          "slope": -1.795394175000003,
          "x_hi": 0.3333333333333333,
          "x_lo": 0.0
        },
        {
          "intercept": -0.1861888250000031,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-3541",
            "x": 0.3333333333333333
          },
          "mu_a_rel": -0.1861888250000031,
          "mu_b_rel": -1.4230165249999969,
          "right": {
            "phase": "oqmd-30506",
            "x": 0.5
          },
          "slope": -1.2368276999999939,
          "x_hi": 0.5,
          "x_lo": 0.3333333333333333
        },
        {
          "intercept": -0.42460566500000635,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-30506",
            "x": 0.5
          },
          "mu_a_rel": -0.42460566500000635,
          "mu_b_rel": -1.1845996849999938,
          "right": {
            "phase": "oqmd-2052678",
            "x": 0.5555555555555556
          },
          "slope": -0.7599940199999874,
          "x_hi": 0.5555555555555556,
          "x_lo": 0.5
        },
        {
          "intercept": -1.1349957149999796,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-2052678",
            "x": 0.5555555555555556
          },
          "mu_a_rel": -1.1349957149999796,
          "mu_b_rel": -0.616287645000015,
          "right": {
            "phase": "oqmd-1369055",
            "x": 0.6
          },
          "slope": 0.5187080699999647,
          "x_hi": 0.6,
          "x_lo": 0.5555555555555556
        },
        {
          "intercept": -1.3980694650000225,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-1369055",
            "x": 0.6
          },
          "mu_a_rel": -1.3980694650000225,
          "mu_b_rel": -0.44090514499998656,
          "right": {
            "phase": "oqmd-13725",
            "x": 0.625
          },
          "slope": 0.9571643200000359,
          "x_hi": 0.625,
          "x_lo": 0.6
        },
        {
          "intercept": -1.7589279150000057,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-13725",
            "x": 0.625
          },
          "mu_a_rel": -1.7589279150000057,
          "mu_b_rel": -0.22439007499999675,
          "right": {
            "phase": "oqmd-1369134",
            "x": 0.6666666666666666
          },
          "slope": 1.534537840000009,
          "x_hi": 0.6666666666666666,
          "x_lo": 0.625
        },
        {
          "intercept": -2.207708064999999,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-1369134",
            "x": 0.6666666666666666
          },
          "mu_a_rel": -2.207708064999999,
          "mu_b_rel": 0.0,
          "right": {
            "phase": "oqmd-67408",
            "x": 1.0
          },
          "slope": 2.207708064999999,
          "x_hi": 1.0,
          "x_lo": 0.6666666666666666
        }
      ],
      "temperature_K": 0.0,
      "vertices": [
        {
          "collinear": false,
          "degenerate": [
            {
              "energy": 0.0,
              "phase": "oqmd-2065280"
            }
          ],
          "energy": 0.0,
          "energy_per_atom": -4.623692585,
          "entries_at_x": 31,
          "formula": "Ge1",
          "nsites": 2,
          "phase": "oqmd-7651",
          "phase_kind": "structure",
          "spacegroup_number": 227,
          "spacegroup_symbol": "Fd-3m",
          "theoretical": false,
          "x": 0.0
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.598464725000001,
          "energy_per_atom": -6.52998389833333,
          "entries_at_x": 4,
          "formula": "Ge2 Zr1",
          "nsites": 6,
          "phase": "oqmd-3541",
          "phase_kind": "structure",
          "spacegroup_number": 63,
          "spacegroup_symbol": "Cmcm",
          "theoretical": false,
          "x": 0.3333333333333333
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.804602675,
          "energy_per_atom": -7.3900351425,
          "entries_at_x": 29,
          "formula": "Ge1 Zr1",
          "nsites": 8,
          "phase": "oqmd-30506",
          "phase_kind": "structure",
          "spacegroup_number": 62,
          "spacegroup_symbol": "Pnma",
          "theoretical": false,
          "x": 0.5
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.8468245649999994,
          "energy_per_atom": -7.650228130555555,
          "entries_at_x": 2,
          "formula": "Ge4 Zr5",
          "nsites": 36,
          "phase": "oqmd-2052678",
          "phase_kind": "structure",
          "spacegroup_number": 92,
          "spacegroup_symbol": "P41212",
          "theoretical": true,
          "x": 0.5555555555555556
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.823770873000001,
          "energy_per_atom": -7.801551317,
          "entries_at_x": 1,
          "formula": "Ge2 Zr3",
          "nsites": 10,
          "phase": "oqmd-1369055",
          "phase_kind": "structure",
          "spacegroup_number": 127,
          "spacegroup_symbol": "P4/mbm",
          "theoretical": true,
          "x": 0.6
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.799841765,
          "energy_per_atom": -7.875709203125,
          "entries_at_x": 1,
          "formula": "Ge3 Zr5",
          "nsites": 16,
          "phase": "oqmd-13725",
          "phase_kind": "structure",
          "spacegroup_number": 193,
          "spacegroup_symbol": "P63/mcm",
          "theoretical": false,
          "x": 0.625
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.735902688333333,
          "energy_per_atom": -7.97524845,
          "entries_at_x": 11,
          "formula": "Ge1 Zr2",
          "nsites": 6,
          "phase": "oqmd-1369134",
          "phase_kind": "structure",
          "spacegroup_number": 140,
          "spacegroup_symbol": "I4/mcm",
          "theoretical": true,
          "x": 0.6666666666666666
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": 0.0,
          "energy_per_atom": -8.54717235,
          "entries_at_x": 30,
          "formula": "Zr1",
          "nsites": 2,
          "phase": "oqmd-67408",
          "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": 0.0001719050000001943,
    "only_mp_stable": [
      "oqmd-758445",
      "oqmd-ref-Ge",
      "oqmd-ref-Zr"
    ],
    "only_ours_stable": [
      "oqmd-3541"
    ],
    "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": "GE-ZR",
  "x_element": "ZR"
}
