{
  "counts": {
    "above_hull": 0,
    "entries": 6,
    "intervals": 5,
    "vertices": 6
  },
  "elements": [
    "BI",
    "K"
  ],
  "flags": [
    "has_intermediate_phases"
  ],
  "isotherms": [
    {
      "element_reference": {
        "BI": {
          "energy": -16915.539959505113,
          "phase": "RHOMBOHEDRAL_A7"
        },
        "K": {
          "energy": -19284.34360802495,
          "phase": "BCC_A2"
        }
      },
      "intervals": [
        {
          "enthalpy": {
            "intercept": 0.0,
            "slope": -86232.2996427838
          },
          "entropy": {
            "intercept": 0.0,
            "slope": 12.838980009016126
          },
          "intercept": 0.0,
          "kind": "two_phase",
          "left": {
            "phase": "RHOMBOHEDRAL_A7",
            "x": 0.0
          },
          "mu_a_rel": 0.0,
          "mu_b_rel": -90060.24153247195,
          "right": {
            "phase": "BI2K_C15",
            "x": 0.3333333333333333
          },
          "slope": -90060.24153247195,
          "x_hi": 0.3333333333333333,
          "x_lo": 0.0
        },
        {
          "enthalpy": {
            "intercept": -14685.949913634726,
            "slope": -42174.44990187961
          },
          "entropy": {
            "intercept": 10.886754979183928,
            "slope": -19.82128492853566
          },
          "intercept": -17931.835910678394,
          "kind": "two_phase",
          "left": {
            "phase": "BI2K_C15",
            "x": 0.3333333333333333
          },
          "mu_a_rel": -17931.835910678394,
          "mu_b_rel": -54196.56971111515,
          "right": {
            "phase": "BI4K5",
            "x": 0.5555555555555556
          },
          "slope": -36264.73380043676,
          "x_hi": 0.5555555555555556,
          "x_lo": 0.3333333333333333
        },
        {
          "enthalpy": {
            "intercept": -20333.699913634555,
            "slope": -32008.49990187992
          },
          "entropy": {
            "intercept": 9.42130497918399,
            "slope": -17.183474928535773
          },
          "intercept": -23142.6619931784,
          "kind": "two_phase",
          "left": {
            "phase": "BI4K5",
            "x": 0.5555555555555556
          },
          "mu_a_rel": -23142.6619931784,
          "mu_b_rel": -50027.90884511515,
          "right": {
            "phase": "BI2K3",
            "x": 0.6000000000000001
          },
          "slope": -26885.24685193675,
          "x_hi": 0.6000000000000001,
          "x_lo": 0.5555555555555556
        },
        {
          "enthalpy": {
            "intercept": -13279.999913634692,
            "slope": -43764.66656854636
          },
          "entropy": {
            "intercept": 38.242399979184,
            "slope": -65.21863326186912
          },
          "intercept": -24681.971467428386,
          "kind": "two_phase",
          "left": {
            "phase": "BI2K3",
            "x": 0.6000000000000001
          },
          "mu_a_rel": -24681.971467428386,
          "mu_b_rel": -49001.702528948495,
          "right": {
            "phase": "BIK3_D021",
            "x": 0.75
          },
          "slope": -24319.73106152011,
          "x_hi": 0.75,
          "x_lo": 0.6000000000000001
        },
        {
          "enthalpy": {
            "intercept": -184413.99936017784,
            "slope": 184413.99936017784
          },
          "entropy": {
            "intercept": -42.686299868871345,
            "slope": 42.686299868871345
          },
          "intercept": -171687.07905427387,
          "kind": "two_phase",
          "left": {
            "phase": "BIK3_D021",
            "x": 0.75
          },
          "mu_a_rel": -171687.07905427387,
          "mu_b_rel": 0.0,
          "right": {
            "phase": "BCC_A2",
            "x": 1.0
          },
          "slope": 171687.07905427387,
          "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": -30020.08051082398,
          "energy_per_atom": -30020.08051082398,
          "enthalpy": -28744.09988092793,
          "entries_at_x": 1,
          "entropy": 4.279660003005375,
          "formula": "",
          "nsites": null,
          "phase": "BI2K_C15",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.3333333333333333
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -38078.91024425437,
          "energy_per_atom": -38078.91024425437,
          "enthalpy": -38116.1998591234,
          "entries_at_x": 1,
          "entropy": -0.1250699811136613,
          "formula": "",
          "nsites": null,
          "phase": "BI4K5",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.5555555555555556
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -39273.81010434045,
          "energy_per_atom": -39273.81010434045,
          "enthalpy": -39538.79985476251,
          "entries_at_x": 1,
          "entropy": -0.8887799779374745,
          "formula": "",
          "nsites": null,
          "phase": "BI2K3",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.6000000000000001
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -42921.76976356847,
          "energy_per_atom": -42921.76976356847,
          "enthalpy": -46103.49984004446,
          "entries_at_x": 1,
          "entropy": -10.671574967217836,
          "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-80Che-LB",
    "builder_version": 1,
    "engine": {
      "numpy": "2.5.1",
      "pycalphad": "0.11.2",
      "python": "3.13.15"
    },
    "fit_tol": 1.0,
    "observed_at": "2026-09-03T00:18:58Z",
    "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-80Che-LB.tdb",
    "source_sha256": "e6d765540ed2fd20d6c43b22ade8397fd6c663863ea559f805a1fc83a68e529f"
  },
  "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"
}