{
  "counts": {
    "above_hull": 0,
    "entries": 9,
    "intervals": 8,
    "vertices": 9
  },
  "elements": [
    "NI",
    "SI"
  ],
  "flags": [
    "has_intermediate_phases",
    "solution_phases"
  ],
  "isotherms": [
    {
      "element_reference": {
        "NI": {
          "energy": -8883.518987254465,
          "phase": "FCC_A1"
        },
        "SI": {
          "energy": -5608.211752840305,
          "phase": "DIAMOND_A4"
        }
      },
      "intervals": [
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                0.0,
                -14152.083085590553,
                1727.3059924120553,
                -34.33495230931294
              ]
            ],
            "knots": [
              0.0,
              0.06928161981216961
            ],
            "max_abs_error": 0.023866816918598488
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                0.0,
                -1.9416654350531461,
                0.4384756780904746,
                -0.012758125172562362
              ]
            ],
            "knots": [
              0.0,
              0.06928161981216961
            ],
            "max_abs_error": 4.346091420193154e-06
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              0.0,
              -13573.175536129438,
              1596.5744689899257,
              -30.53111728967633
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.0,
            0.06928161981216961
          ],
          "max_abs_error": 0.022760469411878148,
          "phase": "FCC_A1",
          "x_hi": 0.06928161981216961,
          "x_lo": 0.0
        },
        {
          "enthalpy": {
            "intercept": -1187.2717985087202,
            "slope": -162695.96867882618
          },
          "entropy": {
            "intercept": 1.7643973293238124,
            "slope": -17.132348901933728
          },
          "intercept": -1713.3268622466167,
          "kind": "two_phase",
          "left": {
            "phase": "FCC_A1",
            "x": 0.06928161981216961
          },
          "mu_a_rel": -1713.3268622466167,
          "mu_b_rel": -159301.28571596125,
          "right": {
            "phase": "NI3SI_L12",
            "x": 0.24
          },
          "slope": -157587.95885371463,
          "x_hi": 0.24,
          "x_lo": 0.06928161981216961
        },
        {
          "enthalpy": {
            "intercept": -31718.426719284806,
            "slope": -35482.82317559249
          },
          "entropy": {
            "intercept": -16.27285053690877,
            "slope": 58.02285054070204
          },
          "intercept": -26866.676331705457,
          "kind": "two_phase",
          "left": {
            "phase": "NI3SI_L12",
            "x": 0.24
          },
          "mu_a_rel": -26866.676331705457,
          "mu_b_rel": -79649.01239600824,
          "right": {
            "phase": "NI5SI2",
            "x": 0.2857142857142857
          },
          "slope": -52782.33606430279,
          "x_hi": 0.2857142857142857,
          "x_lo": 0.24
        },
        {
          "enthalpy": {
            "intercept": -21862.126719284897,
            "slope": -69979.87317559216
          },
          "entropy": {
            "intercept": 40.732507115773764,
            "slope": -141.49590124368683
          },
          "intercept": -34006.5237158528,
          "kind": "two_phase",
          "left": {
            "phase": "NI5SI2",
            "x": 0.2857142857142857
          },
          "mu_a_rel": -34006.5237158528,
          "mu_b_rel": -61799.393935639884,
          "right": {
            "phase": "NI2SI_C37",
            "x": 0.3333333333333333
          },
          "slope": -27792.87021978708,
          "x_hi": 0.3333333333333333,
          "x_lo": 0.2857142857142857
        },
        {
          "enthalpy": {
            "intercept": -60149.726719284794,
            "slope": 44882.92682440752
          },
          "entropy": {
            "intercept": -39.77820818959131,
            "slope": 100.03624467240839
          },
          "intercept": -48289.85394755818,
          "kind": "two_phase",
          "left": {
            "phase": "NI2SI_C37",
            "x": 0.3333333333333333
          },
          "mu_a_rel": -48289.85394755818,
          "mu_b_rel": -33232.73347222912,
          "right": {
            "phase": "NI3SI2",
            "x": 0.4
          },
          "slope": 15057.120475329057,
          "x_hi": 0.4,
          "x_lo": 0.3333333333333333
        },
        {
          "enthalpy": {
            "intercept": -53460.92671928482,
            "slope": 28160.926824407587
          },
          "entropy": {
            "intercept": -2.872850536908758,
            "slope": 7.772850540702018
          },
          "intercept": -52604.38633170551,
          "kind": "two_phase",
          "left": {
            "phase": "NI3SI2",
            "x": 0.4
          },
          "mu_a_rel": -52604.38633170551,
          "mu_b_rel": -26760.934896008148,
          "right": {
            "phase": "NISI_B31",
            "x": 0.5
          },
          "slope": 25843.45143569736,
          "x_hi": 0.5,
          "x_lo": 0.4
        },
        {
          "enthalpy": {
            "intercept": -52560.926719284864,
            "slope": 26360.92682440769
          },
          "entropy": {
            "intercept": 18.827149463091242,
            "slope": -35.62714945929798
          },
          "intercept": -58174.241331705474,
          "kind": "two_phase",
          "left": {
            "phase": "NISI_B31",
            "x": 0.5
          },
          "mu_a_rel": -58174.241331705474,
          "mu_b_rel": -21191.079896008167,
          "right": {
            "phase": "NISI2_C1",
            "x": 0.6666666666666666
          },
          "slope": 36983.16143569731,
          "x_hi": 0.6666666666666666,
          "x_lo": 0.5
        },
        {
          "enthalpy": {
            "intercept": -104960.92650903921,
            "slope": 104960.92650903921
          },
          "entropy": {
            "intercept": -14.772850529322232,
            "slope": 14.772850529322232
          },
          "intercept": -100556.40112372181,
          "kind": "two_phase",
          "left": {
            "phase": "NISI2_C1",
            "x": 0.6666666666666666
          },
          "mu_a_rel": -100556.40112372181,
          "mu_b_rel": 0.0,
          "right": {
            "phase": "DIAMOND_A4",
            "x": 1.0
          },
          "slope": 100556.40112372181,
          "x_hi": 1.0,
          "x_lo": 0.6666666666666666
        }
      ],
      "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": "FCC_A1",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.0
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -12631.275914525502,
          "energy_per_atom": -12631.275914525502,
          "enthalpy": -12459.112045487811,
          "entries_at_x": 1,
          "entropy": 0.5774404462105984,
          "formula": "",
          "nsites": null,
          "phase": "FCC_A1",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.06928161981216961
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -39534.43698713813,
          "energy_per_atom": -39534.43698713813,
          "enthalpy": -40234.304281427,
          "entries_at_x": 1,
          "entropy": -2.3473664071402816,
          "formula": "",
          "nsites": null,
          "phase": "NI3SI_L12",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.24
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -41947.34377864911,
          "energy_per_atom": -41947.34377864911,
          "enthalpy": -41856.376198025515,
          "entries_at_x": 1,
          "entropy": 0.30510676043466844,
          "formula": "",
          "nsites": null,
          "phase": "NI5SI2",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.2857142857142857
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -43270.813789115164,
          "energy_per_atom": -43270.813789115164,
          "enthalpy": -45188.75111114895,
          "entries_at_x": 1,
          "entropy": -6.432793298788514,
          "formula": "",
          "nsites": null,
          "phase": "NI2SI_C37",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.3333333333333333
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -42267.00575742656,
          "energy_per_atom": -42267.00575742656,
          "enthalpy": -42196.55598952178,
          "entries_at_x": 1,
          "entropy": 0.23628967937204948,
          "formula": "",
          "nsites": null,
          "phase": "NI3SI2",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.4
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -39682.660613856824,
          "energy_per_atom": -39682.660613856824,
          "enthalpy": -39380.46330708102,
          "entries_at_x": 1,
          "entropy": 1.0135747334422511,
          "formula": "",
          "nsites": null,
          "phase": "NISI_B31",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.5
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -33518.80037457394,
          "energy_per_atom": -33518.80037457394,
          "enthalpy": -34986.97550301308,
          "entries_at_x": 1,
          "entropy": -4.924283509774078,
          "formula": "",
          "nsites": null,
          "phase": "NISI2_C1",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.6666666666666666
        },
        {
          "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": "DIAMOND_A4",
          "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": "NiSi-05Mie",
    "builder_version": 1,
    "engine": {
      "numpy": "2.5.1",
      "pycalphad": "0.11.2",
      "python": "3.13.15"
    },
    "fit_tol": 1.0,
    "observed_at": "2026-09-03T00:53:35Z",
    "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/NiSi-05Mie.tdb",
    "source_sha256": "9648c90351118a833dbb4bb01eb6734f0447bec80300fc4130b1a3e732ca6d24"
  },
  "reference": {
    "kind": "calphad_formation_T",
    "per": "mole_atoms",
    "temperature_K": 298.15,
    "units": "J/mol-atoms"
  },
  "schema_version": 1,
  "system_id": "NI-SI",
  "x_element": "SI"
}