{
  "counts": {
    "above_hull": 53,
    "entries": 119,
    "intervals": 7,
    "vertices": 8
  },
  "elements": [
    "SR",
    "ZN"
  ],
  "flags": [
    "has_intermediate_compounds",
    "mp_agreement_not_comparable",
    "theoretical_vertices"
  ],
  "isotherms": [
    {
      "intervals": [
        {
          "intercept": 0.0,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-ref-Sr",
            "x": 0.0
          },
          "mu_a_rel": 0.0,
          "mu_b_rel": -0.42311274,
          "right": {
            "phase": "oqmd-1373543",
            "x": 0.3333333333333333
          },
          "slope": -0.42311274,
          "x_hi": 0.3333333333333333,
          "x_lo": 0.0
        },
        {
          "intercept": -0.016238009999999997,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-1373543",
            "x": 0.3333333333333333
          },
          "mu_a_rel": -0.016238009999999997,
          "mu_b_rel": -0.39063672000000005,
          "right": {
            "phase": "oqmd-647530",
            "x": 0.5
          },
          "slope": -0.37439871,
          "x_hi": 0.5,
          "x_lo": 0.3333333333333333
        },
        {
          "intercept": -0.08453521999999988,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-647530",
            "x": 0.5
          },
          "mu_a_rel": -0.08453521999999988,
          "mu_b_rel": -0.32233951000000016,
          "right": {
            "phase": "oqmd-2170135",
            "x": 0.6666666666666666
          },
          "slope": -0.23780429000000025,
          "x_hi": 0.6666666666666666,
          "x_lo": 0.5
        },
        {
          "intercept": -0.31952328999999924,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-2170135",
            "x": 0.6666666666666666
          },
          "mu_a_rel": -0.31952328999999924,
          "mu_b_rel": -0.20484547500000044,
          "right": {
            "phase": "oqmd-2131902",
            "x": 0.7272727272727273
          },
          "slope": 0.11467781499999881,
          "x_hi": 0.7272727272727273,
          "x_lo": 0.6666666666666666
        },
        {
          "intercept": -0.3330840442857149,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-2131902",
            "x": 0.7272727272727273
          },
          "mu_a_rel": -0.3330840442857149,
          "mu_b_rel": -0.19976019214285706,
          "right": {
            "phase": "oqmd-1786521",
            "x": 0.8333333333333334
          },
          "slope": 0.13332385214285786,
          "x_hi": 0.8333333333333334,
          "x_lo": 0.7272727272727273
        },
        {
          "intercept": -0.6626386956249979,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-1786521",
            "x": 0.8333333333333334
          },
          "mu_a_rel": -0.6626386956249979,
          "mu_b_rel": -0.13384926187500046,
          "right": {
            "phase": "oqmd-31093",
            "x": 0.9285714285714286
          },
          "slope": 0.5287894337499974,
          "x_hi": 0.9285714285714286,
          "x_lo": 0.8333333333333334
        },
        {
          "intercept": -2.402679100000005,
          "kind": "two_phase",
          "left": {
            "phase": "oqmd-31093",
            "x": 0.9285714285714286
          },
          "mu_a_rel": -2.402679100000005,
          "mu_b_rel": 0.0,
          "right": {
            "phase": "oqmd-122929",
            "x": 1.0
          },
          "slope": 2.402679100000005,
          "x_hi": 1.0,
          "x_lo": 0.9285714285714286
        }
      ],
      "temperature_K": 0.0,
      "vertices": [
        {
          "collinear": false,
          "degenerate": [],
          "energy": 0.0,
          "energy_per_atom": -1.682914,
          "entries_at_x": 24,
          "formula": "Sr",
          "nsites": null,
          "phase": "oqmd-ref-Sr",
          "phase_kind": "structure",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.0
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.14103758,
          "energy_per_atom": -1.6849890466666666,
          "entries_at_x": 4,
          "formula": "Sr2 Zn1",
          "nsites": 3,
          "phase": "oqmd-1373543",
          "phase_kind": "structure",
          "spacegroup_number": 139,
          "spacegroup_symbol": "I4/mmm",
          "theoretical": true,
          "x": 0.3333333333333333
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.203437365,
          "energy_per_atom": -1.677907665,
          "entries_at_x": 24,
          "formula": "Sr1 Zn1",
          "nsites": 8,
          "phase": "oqmd-647530",
          "phase_kind": "structure",
          "spacegroup_number": 62,
          "spacegroup_symbol": "Pnma",
          "theoretical": false,
          "x": 0.5
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.24307141333333337,
          "energy_per_atom": -1.6480605466666667,
          "entries_at_x": 9,
          "formula": "Sr1 Zn2",
          "nsites": 3,
          "phase": "oqmd-2170135",
          "phase_kind": "structure",
          "spacegroup_number": 191,
          "spacegroup_symbol": "P6/mmm",
          "theoretical": true,
          "x": 0.6666666666666666
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.23612124272727283,
          "energy_per_atom": -1.6158444972727273,
          "entries_at_x": 1,
          "formula": "Sr3 Zn8",
          "nsites": 11,
          "phase": "oqmd-2131902",
          "phase_kind": "structure",
          "spacegroup_number": 71,
          "spacegroup_symbol": "Immm",
          "theoretical": true,
          "x": 0.7272727272727273
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.2219808341666667,
          "energy_per_atom": -1.5574888008333332,
          "entries_at_x": 4,
          "formula": "Sr1 Zn5",
          "nsites": 12,
          "phase": "oqmd-1786521",
          "phase_kind": "structure",
          "spacegroup_number": 63,
          "spacegroup_symbol": "Cmcm",
          "theoretical": true,
          "x": 0.8333333333333334
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.171619935714286,
          "energy_per_atom": -1.46742437857143,
          "entries_at_x": 1,
          "formula": "Sr1 Zn13",
          "nsites": 28,
          "phase": "oqmd-31093",
          "phase_kind": "structure",
          "spacegroup_number": 226,
          "spacegroup_symbol": "Fm-3c",
          "theoretical": false,
          "x": 0.9285714285714286
        },
        {
          "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": 0.0003451291666669576,
    "only_mp_stable": [
      "oqmd-ref-Zn"
    ],
    "only_ours_stable": [
      "oqmd-1786521"
    ],
    "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": "SR-ZN",
  "x_element": "ZN"
}
