{
  "counts": {
    "above_hull": 37,
    "entries": 104,
    "intervals": 8,
    "vertices": 9
  },
  "elements": [
    "HO",
    "ZN"
  ],
  "flags": [
    "has_intermediate_compounds",
    "mp_agreement_not_comparable",
    "theoretical_vertices"
  ],
  "isotherms": [
    {
      "intervals": [
        {
          "intercept": 0.0,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-9314",
            "x": 0.0
          },
          "mu_a_rel": 0.0,
          "mu_b_rel": -0.7093830441666601,
          "right": {
            "phase": "oqmd-1368789",
            "x": 0.3333333333333333
          },
          "slope": -0.7093830441666601,
          "x_hi": 0.3333333333333333,
          "x_lo": 0.0
        },
        {
          "intercept": -0.013374270833330038,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-1368789",
            "x": 0.3333333333333333
          },
          "mu_a_rel": -0.013374270833330038,
          "mu_b_rel": -0.6826345025,
          "right": {
            "phase": "oqmd-89929",
            "x": 0.5
          },
          "slope": -0.6692602316666699,
          "x_hi": 0.5,
          "x_lo": 0.3333333333333333
        },
        {
          "intercept": -0.21575552333333,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-89929",
            "x": 0.5
          },
          "mu_a_rel": -0.21575552333333,
          "mu_b_rel": -0.48025324999999996,
          "right": {
            "phase": "oqmd-17482",
            "x": 0.6666666666666666
          },
          "slope": -0.26449772666667,
          "x_hi": 0.6666666666666666,
          "x_lo": 0.5
        },
        {
          "intercept": -0.6692643133333258,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-17482",
            "x": 0.6666666666666666
          },
          "mu_a_rel": -0.6692643133333258,
          "mu_b_rel": -0.2534988550000021,
          "right": {
            "phase": "oqmd-17483",
            "x": 0.75
          },
          "slope": 0.41576545833332373,
          "x_hi": 0.75,
          "x_lo": 0.6666666666666666
        },
        {
          "intercept": -0.9544085908333395,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-17483",
            "x": 0.75
          },
          "mu_a_rel": -0.9544085908333395,
          "mu_b_rel": -0.15845076249999746,
          "right": {
            "phase": "oqmd-1454480",
            "x": 0.7857142857142857
          },
          "slope": 0.795957828333342,
          "x_hi": 0.7857142857142857,
          "x_lo": 0.75
        },
        {
          "intercept": -1.0457049826436777,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-1454480",
            "x": 0.7857142857142857
          },
          "mu_a_rel": -1.0457049826436777,
          "mu_b_rel": -0.13355174655172364,
          "right": {
            "phase": "oqmd-17374",
            "x": 0.8947368421052632
          },
          "slope": 0.9121532360919541,
          "x_hi": 0.8947368421052632,
          "x_lo": 0.7857142857142857
        },
        {
          "intercept": -1.9295795419047483,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-17374",
            "x": 0.8947368421052632
          },
          "mu_a_rel": -1.9295795419047483,
          "mu_b_rel": -0.029566504285715167,
          "right": {
            "phase": "oqmd-30567",
            "x": 0.9230769230769231
          },
          "slope": 1.9000130376190332,
          "x_hi": 0.9230769230769231,
          "x_lo": 0.8947368421052632
        },
        {
          "intercept": -2.2843775933333306,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-30567",
            "x": 0.9230769230769231
          },
          "mu_a_rel": -2.2843775933333306,
          "mu_b_rel": 0.0,
          "right": {
            "phase": "oqmd-122929",
            "x": 1.0
          },
          "slope": 2.2843775933333306,
          "x_hi": 1.0,
          "x_lo": 0.9230769230769231
        }
      ],
      "temperature_K": 0.0,
      "vertices": [
        {
          "collinear": false,
          "degenerate": [],
          "energy": 0.0,
          "energy_per_atom": -4.57679364666667,
          "entries_at_x": 20,
          "formula": "Ho1",
          "nsites": 3,
          "phase": "oqmd-9314",
          "phase_kind": "structure",
          "spacegroup_number": 166,
          "spacegroup_symbol": "R-3m",
          "theoretical": false,
          "x": 0.0
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.23646101472222,
          "energy_per_atom": -3.7096657125,
          "entries_at_x": 2,
          "formula": "Ho2 Zn1",
          "nsites": 12,
          "phase": "oqmd-1368789",
          "phase_kind": "structure",
          "spacegroup_number": 62,
          "spacegroup_symbol": "Pnma",
          "theoretical": true,
          "x": 0.3333333333333333
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.348004386666665,
          "energy_per_atom": -3.26941461,
          "entries_at_x": 22,
          "formula": "Ho1 Zn1",
          "nsites": 2,
          "phase": "oqmd-89929",
          "phase_kind": "structure",
          "spacegroup_number": 221,
          "spacegroup_symbol": "Pm-3m",
          "theoretical": false,
          "x": 0.5
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.39208734111111,
          "energy_per_atom": -2.76170309,
          "entries_at_x": 7,
          "formula": "Ho1 Zn2",
          "nsites": 6,
          "phase": "oqmd-17482",
          "phase_kind": "structure",
          "spacegroup_number": 74,
          "spacegroup_symbol": "Imma",
          "theoretical": false,
          "x": 0.6666666666666666
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.357440219583333,
          "energy_per_atom": -2.45115873125,
          "entries_at_x": 7,
          "formula": "Ho1 Zn3",
          "nsites": 16,
          "phase": "oqmd-17483",
          "phase_kind": "structure",
          "spacegroup_number": 62,
          "spacegroup_symbol": "Pnma",
          "theoretical": false,
          "x": 0.75
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.32901315428571365,
          "energy_per_atom": -2.304489992857143,
          "entries_at_x": 1,
          "formula": "Ho3 Zn11",
          "nsites": 14,
          "phase": "oqmd-1454480",
          "phase_kind": "structure",
          "spacegroup_number": 71,
          "spacegroup_symbol": "Immm",
          "theoretical": true,
          "x": 0.7857142857142857
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.229567876666666,
          "energy_per_atom": -1.84409645,
          "entries_at_x": 2,
          "formula": "Ho2 Zn17",
          "nsites": 19,
          "phase": "oqmd-17374",
          "phase_kind": "structure",
          "spacegroup_number": 166,
          "spacegroup_symbol": "R-3m",
          "theoretical": false,
          "x": 0.8947368421052632
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.175721353333333,
          "energy_per_atom": -1.69642252615385,
          "entries_at_x": 1,
          "formula": "Ho1 Zn12",
          "nsites": 13,
          "phase": "oqmd-30567",
          "phase_kind": "structure",
          "spacegroup_number": 139,
          "spacegroup_symbol": "I4/mmm",
          "theoretical": false,
          "x": 0.9230769230769231
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": 0.0,
          "energy_per_atom": -1.2660268,
          "entries_at_x": 31,
          "formula": "Zn1",
          "nsites": 2,
          "phase": "oqmd-122929",
          "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": 0.0008741100000002056,
    "only_mp_stable": [
      "oqmd-ref-Ho",
      "oqmd-ref-Zn"
    ],
    "only_ours_stable": [
      "oqmd-17482"
    ],
    "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": "HO-ZN",
  "x_element": "ZN"
}