{
  "counts": {
    "above_hull": 46,
    "entries": 88,
    "intervals": 7,
    "vertices": 8
  },
  "elements": [
    "CD",
    "NA"
  ],
  "flags": [
    "has_intermediate_compounds",
    "mp_agreement_not_comparable",
    "theoretical_vertices"
  ],
  "isotherms": [
    {
      "intervals": [
        {
          "intercept": 0.0,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-593871",
            "x": 0.0
          },
          "mu_a_rel": 0.0,
          "mu_b_rel": -0.6699847591849815,
          "right": {
            "phase": "oqmd-654735",
            "x": 0.15384615384615385
          },
          "slope": -0.6699847591849815,
          "x_hi": 0.15384615384615385,
          "x_lo": 0.0
        },
        {
          "intercept": -0.05352243095238127,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-654735",
            "x": 0.15384615384615385
          },
          "mu_a_rel": -0.05352243095238127,
          "mu_b_rel": -0.3756113889468845,
          "right": {
            "phase": "oqmd-1372120",
            "x": 0.3333333333333333
          },
          "slope": -0.3220889579945032,
          "x_hi": 0.3333333333333333,
          "x_lo": 0.15384615384615385
        },
        {
          "intercept": -0.1537162549999991,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-1372120",
            "x": 0.3333333333333333
          },
          "mu_a_rel": -0.1537162549999991,
          "mu_b_rel": -0.1752237408516488,
          "right": {
            "phase": "oqmd-1482273",
            "x": 0.5
          },
          "slope": -0.021507485851649685,
          "x_hi": 0.5,
          "x_lo": 0.3333333333333333
        },
        {
          "intercept": -0.20877775499999837,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-1482273",
            "x": 0.5
          },
          "mu_a_rel": -0.20877775499999837,
          "mu_b_rel": -0.12016224085164953,
          "right": {
            "phase": "oqmd-2131999",
            "x": 0.5384615384615384
          },
          "slope": 0.08861551414834884,
          "x_hi": 0.5384615384615384,
          "x_lo": 0.5
        },
        {
          "intercept": -0.22180302090909076,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-2131999",
            "x": 0.5384615384615384
          },
          "mu_a_rel": -0.22180302090909076,
          "mu_b_rel": -0.10899772721528465,
          "right": {
            "phase": "oqmd-2034596",
            "x": 0.75
          },
          "slope": 0.11280529369380611,
          "x_hi": 0.75,
          "x_lo": 0.5384615384615384
        },
        {
          "intercept": -0.28995259347826197,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-2034596",
            "x": 0.75
          },
          "mu_a_rel": -0.28995259347826197,
          "mu_b_rel": -0.08628120302556092,
          "right": {
            "phase": "oqmd-1338872",
            "x": 0.8627450980392157
          },
          "slope": 0.20367139045270105,
          "x_hi": 0.8627450980392157,
          "x_lo": 0.75
        },
        {
          "intercept": -0.832291583924645,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-1338872",
            "x": 0.8627450980392157
          },
          "mu_a_rel": -0.832291583924645,
          "mu_b_rel": 0.0,
          "right": {
            "phase": "oqmd-8535",
            "x": 1.0
          },
          "slope": 0.832291583924645,
          "x_hi": 1.0,
          "x_lo": 0.8627450980392157
        }
      ],
      "temperature_K": 0.0,
      "vertices": [
        {
          "collinear": false,
          "degenerate": [],
          "energy": 0.0,
          "energy_per_atom": -0.90043514,
          "entries_at_x": 20,
          "formula": "Cd1",
          "nsites": 2,
          "phase": "oqmd-593871",
          "phase_kind": "structure",
          "spacegroup_number": 194,
          "spacegroup_symbol": "P63/mmc",
          "theoretical": false,
          "x": 0.0
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.103074578336151,
          "energy_per_atom": -1.04947411820513,
          "entries_at_x": 1,
          "formula": "Cd11 Na2",
          "nsites": 39,
          "phase": "oqmd-654735",
          "phase_kind": "structure",
          "spacegroup_number": 200,
          "spacegroup_symbol": "Pm-3",
          "theoretical": false,
          "x": 0.15384615384615385
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.160885416950549,
          "energy_per_atom": -1.16091009,
          "entries_at_x": 5,
          "formula": "Cd2 Na1",
          "nsites": 3,
          "phase": "oqmd-1372120",
          "phase_kind": "structure",
          "spacegroup_number": 191,
          "spacegroup_symbol": "P6/mmm",
          "theoretical": true,
          "x": 0.3333333333333333
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.16446999792582395,
          "energy_per_atom": -1.2142894375,
          "entries_at_x": 13,
          "formula": "Cd1 Na1",
          "nsites": 4,
          "phase": "oqmd-1482273",
          "phase_kind": "structure",
          "spacegroup_number": 70,
          "spacegroup_symbol": "Fddd",
          "theoretical": true,
          "x": 0.5
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.16106170892011823,
          "energy_per_atom": -1.2223722484615385,
          "entries_at_x": 1,
          "formula": "Cd6 Na7",
          "nsites": 13,
          "phase": "oqmd-2131999",
          "phase_kind": "structure",
          "spacegroup_number": 166,
          "spacegroup_symbol": "R-3m",
          "theoretical": true,
          "x": 0.5384615384615384
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.13719905063873616,
          "energy_per_atom": -1.26171064,
          "entries_at_x": 6,
          "formula": "Cd1 Na3",
          "nsites": 8,
          "phase": "oqmd-2034596",
          "phase_kind": "structure",
          "spacegroup_number": 59,
          "spacegroup_symbol": "Pmmn",
          "theoretical": true,
          "x": 0.75
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.114236099754363,
          "energy_per_atom": -1.272432384117647,
          "entries_at_x": 1,
          "formula": "Cd7 Na44",
          "nsites": 102,
          "phase": "oqmd-1338872",
          "phase_kind": "structure",
          "spacegroup_number": 216,
          "spacegroup_symbol": "F-43m",
          "theoretical": true,
          "x": 0.8627450980392157
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": 0.0,
          "energy_per_atom": -1.30288018,
          "entries_at_x": 24,
          "formula": "Na1",
          "nsites": 2,
          "phase": "oqmd-8535",
          "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": 7.996981965519012e-10,
    "only_mp_stable": [
      "oqmd-ref-Cd",
      "oqmd-ref-Na"
    ],
    "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": "CD-NA",
  "x_element": "NA"
}