{
  "counts": {
    "above_hull": 0,
    "entries": 6,
    "intervals": 5,
    "vertices": 6
  },
  "elements": [
    "B",
    "NI"
  ],
  "flags": [
    "has_intermediate_phases"
  ],
  "isotherms": [
    {
      "element_reference": {
        "B": {
          "energy": -1759.0851508106553,
          "phase": "BETA_RHOMBO_B"
        },
        "NI": {
          "energy": -8883.51879711768,
          "phase": "FCC_A1"
        }
      },
      "intervals": [
        {
          "enthalpy": {
            "intercept": 0.0,
            "slope": -38360.92682054594
          },
          "entropy": {
            "intercept": 0.0,
            "slope": -9.412850382295517
          },
          "intercept": 0.0,
          "kind": "two_phase",
          "left": {
            "phase": "BETA_RHOMBO_B",
            "x": 0.0
          },
          "mu_a_rel": 0.0,
          "mu_b_rel": -35554.485479064526,
          "right": {
            "phase": "NIB_B33",
            "x": 0.5
          },
          "slope": -35554.485479064526,
          "x_hi": 0.5,
          "x_lo": 0.0
        },
        {
          "enthalpy": {
            "intercept": -6799.999961550244,
            "slope": -24760.92689744545
          },
          "entropy": {
            "intercept": -2.610000014516177,
            "slope": -4.192850353263163
          },
          "intercept": -6021.828457222213,
          "kind": "two_phase",
          "left": {
            "phase": "NIB_B33",
            "x": 0.5
          },
          "mu_a_rel": -6021.828457222213,
          "mu_b_rel": -29532.657021842315,
          "right": {
            "phase": "NI4B3_O",
            "x": 0.5714285714285714
          },
          "slope": -23510.8285646201,
          "x_hi": 0.5714285714285714,
          "x_lo": 0.5
        },
        {
          "enthalpy": {
            "intercept": -18399.999961550264,
            "slope": -4460.9268974454135
          },
          "entropy": {
            "intercept": -11.470000014516135,
            "slope": 11.312149646736763
          },
          "intercept": -14980.219457222265,
          "kind": "two_phase",
          "left": {
            "phase": "NI4B3_O",
            "x": 0.5714285714285714
          },
          "mu_a_rel": -14980.219457222265,
          "mu_b_rel": -22813.863771842272,
          "right": {
            "phase": "NI2B_C16",
            "x": 0.6666666666666666
          },
          "slope": -7833.644314620007,
          "x_hi": 0.6666666666666666,
          "x_lo": 0.5714285714285714
        },
        {
          "enthalpy": {
            "intercept": -63399.99996155019,
            "slope": 63039.07310255448
          },
          "entropy": {
            "intercept": -28.160000014516136,
            "slope": 36.34714964673677
          },
          "intercept": -55004.09595722227,
          "kind": "two_phase",
          "left": {
            "phase": "NI2B_C16",
            "x": 0.6666666666666666
          },
          "mu_a_rel": -55004.09595722227,
          "mu_b_rel": -2801.9255218422695,
          "right": {
            "phase": "NI3B_D011",
            "x": 0.75
          },
          "slope": 52202.17043538,
          "x_hi": 0.75,
          "x_lo": 0.6666666666666666
        },
        {
          "enthalpy": {
            "intercept": -64482.78053853732,
            "slope": 64482.78053853732
          },
          "entropy": {
            "intercept": -3.5985511178542424,
            "slope": 3.5985511178542424
          },
          "intercept": -63409.87252274907,
          "kind": "two_phase",
          "left": {
            "phase": "NI3B_D011",
            "x": 0.75
          },
          "mu_a_rel": -63409.87252274907,
          "mu_b_rel": 0.0,
          "right": {
            "phase": "FCC_A1",
            "x": 1.0
          },
          "slope": 63409.87252274907,
          "x_hi": 1.0,
          "x_lo": 0.75
        }
      ],
      "temperature_K": 298.15,
      "vertices": [
        {
          "collinear": false,
          "degenerate": [],
          "energy": 0.0,
          "energy_per_atom": 0.0,
          "enthalpy": 0.0,
          "entries_at_x": 1,
          "entropy": 0.0,
          "formula": "",
          "nsites": null,
          "phase": "BETA_RHOMBO_B",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.0
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -17777.242739532263,
          "energy_per_atom": -17777.242739532263,
          "enthalpy": -19180.46341027297,
          "entries_at_x": 1,
          "entropy": -4.706425191147758,
          "formula": "",
          "nsites": null,
          "phase": "NIB_B33",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.5
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -19456.587637005126,
          "energy_per_atom": -19456.587637005126,
          "enthalpy": -20949.101045804786,
          "entries_at_x": 1,
          "entropy": -5.005914502095127,
          "formula": "",
          "nsites": null,
          "phase": "NI4B3_O",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.5714285714285714
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -20202.64900030227,
          "energy_per_atom": -20202.64900030227,
          "enthalpy": -21373.951226513873,
          "entries_at_x": 1,
          "entropy": -3.9285669166916257,
          "formula": "",
          "nsites": null,
          "phase": "NI2B_C16",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.6666666666666666
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -15852.468130687268,
          "energy_per_atom": -15852.468130687268,
          "enthalpy": -16120.69513463433,
          "entries_at_x": 1,
          "entropy": -0.8996377794635606,
          "formula": "",
          "nsites": null,
          "phase": "NI3B_D011",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.75
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": 0.0,
          "energy_per_atom": 0.0,
          "enthalpy": 0.0,
          "entries_at_x": 1,
          "entropy": 0.0,
          "formula": "",
          "nsites": null,
          "phase": "FCC_A1",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 1.0
        }
      ]
    }
  ],
  "mp_agreement": {
    "comparable": false,
    "comparable_note": "CALPHAD isotherms have no upstream stability flag to compare against",
    "max_abs_delta_energy_above_hull": 0.0,
    "only_mp_stable": [],
    "only_ours_stable": [],
    "stable_sets_match": true
  },
  "provenance": {
    "assessment": "NiB-91Pan-LB",
    "builder_version": 1,
    "engine": {
      "numpy": "2.5.1",
      "pycalphad": "0.11.2",
      "python": "3.13.15"
    },
    "fit_tol": 1.0,
    "observed_at": "2026-09-03T00:52:26Z",
    "phase_families": {},
    "sample_conditions": {
      "endpoint_tol": 1.0,
      "fit_samples": 65,
      "order_tol": 0.0001,
      "pressure_Pa": 101325.0,
      "redundant_tol": 1.0,
      "refine_tol": 1e-07,
      "step": 0.002,
      "temperature_K": 298.15
    },
    "source_path": "databases/sgte-binary/NiB-91Pan-LB.tdb",
    "source_sha256": "b5ec43771f115b2845b491f121a3696b31c8457136696092d4f7d3414be0a5cd"
  },
  "reference": {
    "kind": "calphad_formation_T",
    "per": "mole_atoms",
    "temperature_K": 298.15,
    "units": "J/mol-atoms"
  },
  "schema_version": 1,
  "system_id": "B-NI",
  "x_element": "NI"
}
