{
  "counts": {
    "above_hull": 18,
    "entries": 102,
    "intervals": 5,
    "vertices": 6
  },
  "elements": [
    "PT",
    "SB"
  ],
  "flags": [
    "has_intermediate_compounds",
    "mp_agreement_not_comparable",
    "theoretical_vertices"
  ],
  "isotherms": [
    {
      "intervals": [
        {
          "intercept": 0.0,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-7522",
            "x": 0.0
          },
          "mu_a_rel": 0.0,
          "mu_b_rel": -0.9926785299999992,
          "right": {
            "phase": "oqmd-1791178",
            "x": 0.2857142857142857
          },
          "slope": -0.9926785299999992,
          "x_hi": 0.2857142857142857,
          "x_lo": 0.0
        },
        {
          "intercept": -0.06605159249999926,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-1791178",
            "x": 0.2857142857142857
          },
          "mu_a_rel": -0.06605159249999926,
          "mu_b_rel": -0.8275495487500011,
          "right": {
            "phase": "oqmd-7877",
            "x": 0.4
          },
          "slope": -0.7614979562500018,
          "x_hi": 0.4,
          "x_lo": 0.2857142857142857
        },
        {
          "intercept": -0.15105644499999987,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-7877",
            "x": 0.4
          },
          "mu_a_rel": -0.15105644499999987,
          "mu_b_rel": -0.7000422700000002,
          "right": {
            "phase": "oqmd-3649",
            "x": 0.5
          },
          "slope": -0.5489858250000003,
          "x_hi": 0.5,
          "x_lo": 0.4
        },
        {
          "intercept": -0.24154656499999902,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-3649",
            "x": 0.5
          },
          "mu_a_rel": -0.24154656499999902,
          "mu_b_rel": -0.609552150000001,
          "right": {
            "phase": "oqmd-7991",
            "x": 0.6666666666666666
          },
          "slope": -0.36800558500000197,
          "x_hi": 0.6666666666666666,
          "x_lo": 0.5
        },
        {
          "intercept": -1.460611936666667,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-7991",
            "x": 0.6666666666666666
          },
          "mu_a_rel": -1.460611936666667,
          "mu_b_rel": -1.9464166666871563e-05,
          "right": {
            "phase": "oqmd-1787572",
            "x": 1.0
          },
          "slope": 1.4605924725000001,
          "x_hi": 1.0,
          "x_lo": 0.6666666666666666
        }
      ],
      "temperature_K": 0.0,
      "vertices": [
        {
          "collinear": false,
          "degenerate": [],
          "energy": 0.0,
          "energy_per_atom": -6.05575959,
          "entries_at_x": 28,
          "formula": "Pt1",
          "nsites": 1,
          "phase": "oqmd-7522",
          "phase_kind": "structure",
          "spacegroup_number": 225,
          "spacegroup_symbol": "Fm-3m",
          "theoretical": false,
          "x": 0.0
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.2836224371428569,
          "energy_per_atom": -5.78561158,
          "entries_at_x": 1,
          "formula": "Pt5 Sb2",
          "nsites": 14,
          "phase": "oqmd-1791178",
          "phase_kind": "structure",
          "spacegroup_number": 15,
          "spacegroup_symbol": "C2/c",
          "theoretical": true,
          "x": 0.2857142857142857
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.370650775,
          "energy_per_atom": -5.651131739,
          "entries_at_x": 1,
          "formula": "Pt3 Sb2",
          "nsites": 10,
          "phase": "oqmd-7877",
          "phase_kind": "structure",
          "spacegroup_number": 72,
          "spacegroup_symbol": "Ibam",
          "theoretical": false,
          "x": 0.4
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.4255493575,
          "energy_per_atom": -5.512210665,
          "entries_at_x": 8,
          "formula": "Pt1 Sb1",
          "nsites": 4,
          "phase": "oqmd-3649",
          "phase_kind": "structure",
          "spacegroup_number": 194,
          "spacegroup_symbol": "P63/mmc",
          "theoretical": false,
          "x": 0.5
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.486883621666667,
          "energy_per_atom": -5.25051216833333,
          "entries_at_x": 5,
          "formula": "Pt1 Sb2",
          "nsites": 12,
          "phase": "oqmd-7991",
          "phase_kind": "structure",
          "spacegroup_number": 205,
          "spacegroup_symbol": "Pa-3",
          "theoretical": false,
          "x": 0.6666666666666666
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -1.9464166666871563e-05,
          "energy_per_atom": -4.117582489166667,
          "entries_at_x": 25,
          "formula": "Sb1",
          "nsites": 12,
          "phase": "oqmd-1787572",
          "phase_kind": "structure",
          "spacegroup_number": 12,
          "spacegroup_symbol": "C2/m",
          "theoretical": true,
          "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": 0.0014287024999997122,
    "only_mp_stable": [
      "oqmd-9672",
      "oqmd-ref-Pt",
      "oqmd-ref-Sb"
    ],
    "only_ours_stable": [
      "oqmd-3649"
    ],
    "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": "PT-SB",
  "x_element": "SB"
}