{
  "counts": {
    "above_hull": 17,
    "entries": 90,
    "intervals": 5,
    "vertices": 6
  },
  "elements": [
    "CO",
    "LA"
  ],
  "flags": [
    "degenerate_endpoints",
    "has_intermediate_compounds",
    "mp_agreement_not_comparable",
    "theoretical_vertices"
  ],
  "isotherms": [
    {
      "intervals": [
        {
          "intercept": 0.0,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-594128",
            "x": 0.0
          },
          "mu_a_rel": 0.0,
          "mu_b_rel": -0.4529401350000055,
          "right": {
            "phase": "oqmd-1280451",
            "x": 0.10526315789473684
          },
          "slope": -0.4529401350000055,
          "x_hi": 0.10526315789473684,
          "x_lo": 0.0
        },
        {
          "intercept": -0.027022906666667477,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-1280451",
            "x": 0.10526315789473684
          },
          "mu_a_rel": -0.027022906666667477,
          "mu_b_rel": -0.22324542833333197,
          "right": {
            "phase": "oqmd-1481418",
            "x": 0.5
          },
          "slope": -0.19622252166666448,
          "x_hi": 0.5,
          "x_lo": 0.10526315789473684
        },
        {
          "intercept": -0.13926582499999896,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-1481418",
            "x": 0.5
          },
          "mu_a_rel": -0.13926582499999896,
          "mu_b_rel": -0.1110025100000005,
          "right": {
            "phase": "oqmd-1481419",
            "x": 0.6666666666666666
          },
          "slope": 0.028263314999998464,
          "x_hi": 0.6666666666666666,
          "x_lo": 0.5
        },
        {
          "intercept": -0.23776601999999175,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-1481419",
            "x": 0.6666666666666666
          },
          "mu_a_rel": -0.23776601999999175,
          "mu_b_rel": -0.0617524125000041,
          "right": {
            "phase": "oqmd-19328",
            "x": 0.75
          },
          "slope": 0.17601360749998765,
          "x_hi": 0.75,
          "x_lo": 0.6666666666666666
        },
        {
          "intercept": -0.423023257500004,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-19328",
            "x": 0.75
          },
          "mu_a_rel": -0.423023257500004,
          "mu_b_rel": 0.0,
          "right": {
            "phase": "oqmd-ref-La",
            "x": 1.0
          },
          "slope": 0.423023257500004,
          "x_hi": 1.0,
          "x_lo": 0.75
        }
      ],
      "temperature_K": 0.0,
      "vertices": [
        {
          "collinear": false,
          "degenerate": [],
          "energy": 0.0,
          "energy_per_atom": -7.089565,
          "entries_at_x": 38,
          "formula": "Co1",
          "nsites": 1,
          "phase": "oqmd-594128",
          "phase_kind": "structure",
          "spacegroup_number": 225,
          "spacegroup_symbol": "Fm-3m",
          "theoretical": false,
          "x": 0.0
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.047677908947369,
          "energy_per_atom": -6.91049244157895,
          "entries_at_x": 1,
          "formula": "Co17 La2",
          "nsites": 19,
          "phase": "oqmd-1280451",
          "phase_kind": "structure",
          "spacegroup_number": 166,
          "spacegroup_symbol": "R-3m",
          "theoretical": true,
          "x": 0.10526315789473684
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.12513416749999973,
          "energy_per_atom": -6.1376344475,
          "entries_at_x": 7,
          "formula": "Co1 La1",
          "nsites": 4,
          "phase": "oqmd-1481418",
          "phase_kind": "structure",
          "spacegroup_number": 2,
          "spacegroup_symbol": "P-1",
          "theoretical": true,
          "x": 0.5
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.12042361499999998,
          "energy_per_atom": -5.773902321666667,
          "entries_at_x": 3,
          "formula": "Co1 La2",
          "nsites": 6,
          "phase": "oqmd-1481419",
          "phase_kind": "structure",
          "spacegroup_number": 2,
          "spacegroup_symbol": "P-1",
          "theoretical": true,
          "x": 0.6666666666666666
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.105755814375001,
          "energy_per_atom": -5.579723734375,
          "entries_at_x": 5,
          "formula": "Co1 La3",
          "nsites": 16,
          "phase": "oqmd-19328",
          "phase_kind": "structure",
          "spacegroup_number": 62,
          "spacegroup_symbol": "Pnma",
          "theoretical": false,
          "x": 0.75
        },
        {
          "collinear": false,
          "degenerate": [
            {
              "energy": 0.0,
              "phase": "oqmd-1215430"
            }
          ],
          "energy": 0.0,
          "energy_per_atom": -4.935436,
          "entries_at_x": 20,
          "formula": "La",
          "nsites": null,
          "phase": "oqmd-ref-La",
          "phase_kind": "structure",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "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": 0.016891099999999604,
    "only_mp_stable": [
      "oqmd-ref-Co"
    ],
    "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": "CO-LA",
  "x_element": "LA"
}