{
  "counts": {
    "above_hull": 45,
    "entries": 231,
    "intervals": 6,
    "vertices": 7
  },
  "elements": [
    "TI",
    "W"
  ],
  "flags": [
    "has_intermediate_compounds",
    "mp_agreement_not_comparable",
    "theoretical_vertices"
  ],
  "isotherms": [
    {
      "intervals": [
        {
          "intercept": 0.0,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-9315",
            "x": 0.0
          },
          "mu_a_rel": 0.0,
          "mu_b_rel": -0.1476910387862631,
          "right": {
            "phase": "oqmd-2082637",
            "x": 0.5
          },
          "slope": -0.1476910387862631,
          "x_hi": 0.5,
          "x_lo": 0.0
        },
        {
          "intercept": -0.03647634628626406,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-2082637",
            "x": 0.5
          },
          "mu_a_rel": -0.03647634628626406,
          "mu_b_rel": -0.11121469249999905,
          "right": {
            "phase": "oqmd-1373897",
            "x": 0.75
          },
          "slope": -0.07473834621373499,
          "x_hi": 0.75,
          "x_lo": 0.5
        },
        {
          "intercept": -0.11682608878624023,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-1373897",
            "x": 0.75
          },
          "mu_a_rel": -0.11682608878624023,
          "mu_b_rel": -0.08443144500000699,
          "right": {
            "phase": "oqmd-2132146",
            "x": 0.8125
          },
          "slope": 0.032394643786233246,
          "x_hi": 0.8125,
          "x_lo": 0.75
        },
        {
          "intercept": -0.19215250878628076,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-2132146",
            "x": 0.8125
          },
          "mu_a_rel": -0.19215250878628076,
          "mu_b_rel": -0.06704842499999764,
          "right": {
            "phase": "oqmd-1916283",
            "x": 0.875
          },
          "slope": 0.12510408378628313,
          "x_hi": 0.875,
          "x_lo": 0.8125
        },
        {
          "intercept": -0.5035779850362712,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-1916283",
            "x": 0.875
          },
          "mu_a_rel": -0.5035779850362712,
          "mu_b_rel": -0.022559071249999008,
          "right": {
            "phase": "oqmd-2132147",
            "x": 0.9375
          },
          "slope": 0.48101891378627215,
          "x_hi": 0.9375,
          "x_lo": 0.875
        },
        {
          "intercept": -0.8419640537862563,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-2132147",
            "x": 0.9375
          },
          "mu_a_rel": -0.8419640537862563,
          "mu_b_rel": 0.0,
          "right": {
            "phase": "oqmd-ref-W",
            "x": 1.0
          },
          "slope": 0.8419640537862563,
          "x_hi": 1.0,
          "x_lo": 0.9375
        }
      ],
      "temperature_K": 0.0,
      "vertices": [
        {
          "collinear": false,
          "degenerate": [],
          "energy": 0.0,
          "energy_per_atom": -7.77563880666667,
          "entries_at_x": 31,
          "formula": "Ti1",
          "nsites": 3,
          "phase": "oqmd-9315",
          "phase_kind": "structure",
          "spacegroup_number": 191,
          "spacegroup_symbol": "P6/mmm",
          "theoretical": false,
          "x": 0.0
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.07384551939313155,
          "energy_per_atom": -10.4029778875,
          "entries_at_x": 35,
          "formula": "Ti1 W1",
          "nsites": 4,
          "phase": "oqmd-2082637",
          "phase_kind": "structure",
          "spacegroup_number": 227,
          "spacegroup_symbol": "Fd-3m",
          "theoretical": true,
          "x": 0.5
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.0925301059465653,
          "energy_per_atom": -11.737199765,
          "entries_at_x": 13,
          "formula": "Ti1 W3",
          "nsites": 4,
          "phase": "oqmd-1373897",
          "phase_kind": "structure",
          "spacegroup_number": 71,
          "spacegroup_symbol": "Immm",
          "theoretical": true,
          "x": 0.75
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.09050544070992572,
          "energy_per_atom": -12.0640594225,
          "entries_at_x": 1,
          "formula": "Ti3 W13",
          "nsites": 16,
          "phase": "oqmd-2132146",
          "phase_kind": "structure",
          "spacegroup_number": 221,
          "spacegroup_symbol": "Pm-3m",
          "theoretical": true,
          "x": 0.8125
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.08268643547328303,
          "energy_per_atom": -12.38512474,
          "entries_at_x": 1,
          "formula": "Ti1 W7",
          "nsites": 8,
          "phase": "oqmd-1916283",
          "phase_kind": "structure",
          "spacegroup_number": 123,
          "spacegroup_symbol": "P4/mmm",
          "theoretical": true,
          "x": 0.875
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.05262275336164102,
          "energy_per_atom": -12.683945380625,
          "entries_at_x": 1,
          "formula": "Ti1 W15",
          "nsites": 16,
          "phase": "oqmd-2132147",
          "phase_kind": "structure",
          "spacegroup_number": 221,
          "spacegroup_symbol": "Pm-3m",
          "theoretical": true,
          "x": 0.9375
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": 0.0,
          "energy_per_atom": -12.960207,
          "entries_at_x": 24,
          "formula": "W",
          "nsites": null,
          "phase": "oqmd-ref-W",
          "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": 3.4082547895053494e-10,
    "only_mp_stable": [
      "oqmd-ref-Ti"
    ],
    "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": "TI-W",
  "x_element": "W"
}
