{
  "counts": {
    "above_hull": 0,
    "entries": 6,
    "intervals": 5,
    "vertices": 6
  },
  "elements": [
    "BI",
    "K"
  ],
  "flags": [
    "has_intermediate_phases"
  ],
  "isotherms": [
    {
      "element_reference": {
        "BI": {
          "energy": -16915.53996953619,
          "phase": "RHOMBOHEDRAL_A7"
        },
        "K": {
          "energy": -19284.34360907322,
          "phase": "BCC_A2"
        }
      },
      "intervals": [
        {
          "enthalpy": {
            "intercept": 0.0,
            "slope": -102633.9996072773
          },
          "entropy": {
            "intercept": 0.0,
            "slope": -8.57999994269921
          },
          "intercept": 0.0,
          "kind": "two_phase",
          "left": {
            "phase": "RHOMBOHEDRAL_A7",
            "x": 0.0
          },
          "mu_a_rel": 0.0,
          "mu_b_rel": -100075.87262436154,
          "right": {
            "phase": "BI2K_C15",
            "x": 0.3333333333333333
          },
          "slope": -100075.87262436154,
          "x_hi": 0.3333333333333333,
          "x_lo": 0.0
        },
        {
          "enthalpy": {
            "intercept": -22384.999897207705,
            "slope": -35478.999915654196
          },
          "entropy": {
            "intercept": 2.0166666673026423,
            "slope": -14.629999944607139
          },
          "intercept": -22986.269064064018,
          "kind": "two_phase",
          "left": {
            "phase": "BI2K_C15",
            "x": 0.3333333333333333
          },
          "mu_a_rel": -22986.269064064018,
          "mu_b_rel": -54103.33449623351,
          "right": {
            "phase": "BI4K5",
            "x": 0.5555555555555556
          },
          "slope": -31117.06543216949,
          "x_hi": 0.5555555555555556,
          "x_lo": 0.3333333333333333
        },
        {
          "enthalpy": {
            "intercept": -28669.99989720794,
            "slope": -24165.999915653774
          },
          "entropy": {
            "intercept": -0.9999999993640927,
            "slope": -9.199999944607017
          },
          "intercept": -28371.849897397202,
          "kind": "two_phase",
          "left": {
            "phase": "BI4K5",
            "x": 0.5555555555555556
          },
          "mu_a_rel": -28371.849897397202,
          "mu_b_rel": -49794.86982956696,
          "right": {
            "phase": "BI2K3",
            "x": 0.6000000000000001
          },
          "slope": -21423.019932169762,
          "x_hi": 0.6000000000000001,
          "x_lo": 0.5555555555555556
        },
        {
          "enthalpy": {
            "intercept": -28998.999897207705,
            "slope": -23617.66658232083
          },
          "entropy": {
            "intercept": 15.40000000063598,
            "slope": -36.533333277940464
          },
          "intercept": -33590.50989739735,
          "kind": "two_phase",
          "left": {
            "phase": "BI2K3",
            "x": 0.6000000000000001
          },
          "mu_a_rel": -33590.50989739735,
          "mu_b_rel": -46315.76316290019,
          "right": {
            "phase": "BIK3_D021",
            "x": 0.75
          },
          "slope": -12725.25326550284,
          "x_hi": 0.75,
          "x_lo": 0.6000000000000001
        },
        {
          "enthalpy": {
            "intercept": -186848.9993357933,
            "slope": 186848.9993357933
          },
          "entropy": {
            "intercept": -47.99999983127748,
            "slope": 47.99999983127748
          },
          "intercept": -172537.79938609793,
          "kind": "two_phase",
          "left": {
            "phase": "BIK3_D021",
            "x": 0.75
          },
          "mu_a_rel": -172537.79938609793,
          "mu_b_rel": 0.0,
          "right": {
            "phase": "BCC_A2",
            "x": 1.0
          },
          "slope": 172537.79938609793,
          "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": "RHOMBOHEDRAL_A7",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.0
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -33358.62420812051,
          "energy_per_atom": -33358.62420812051,
          "enthalpy": -34211.33320242577,
          "entries_at_x": 1,
          "entropy": -2.8599999808997367,
          "formula": "",
          "nsites": null,
          "phase": "BI2K_C15",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.3333333333333333
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -40273.52763749151,
          "energy_per_atom": -40273.52763749151,
          "enthalpy": -42095.55540590448,
          "entries_at_x": 1,
          "entropy": -6.111111079701324,
          "formula": "",
          "nsites": null,
          "phase": "BI4K5",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.5555555555555556
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -41225.66185669906,
          "energy_per_atom": -41225.66185669906,
          "enthalpy": -43169.599846600206,
          "entries_at_x": 1,
          "entropy": -6.519999966128303,
          "formula": "",
          "nsites": null,
          "phase": "BI2K3",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.6000000000000001
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -43134.44984652448,
          "energy_per_atom": -43134.44984652448,
          "enthalpy": -46712.24983394833,
          "entries_at_x": 1,
          "entropy": -11.99999995781937,
          "formula": "",
          "nsites": null,
          "phase": "BIK3_D021",
          "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": "BCC_A2",
          "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": "BiK-12Niu",
    "builder_version": 1,
    "engine": {
      "numpy": "2.5.1",
      "pycalphad": "0.11.2",
      "python": "3.13.15"
    },
    "fit_tol": 1.0,
    "observed_at": "2026-09-03T00:18:56Z",
    "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/BiK-12Niu.tdb",
    "source_sha256": "3ce72b86413e842a4b31807019480e25cd7d65498e3056723646ddd7b0657bb0"
  },
  "reference": {
    "kind": "calphad_formation_T",
    "per": "mole_atoms",
    "temperature_K": 298.15,
    "units": "J/mol-atoms"
  },
  "schema_version": 1,
  "system_id": "BI-K",
  "x_element": "K"
}