{
  "counts": {
    "above_hull": 0,
    "entries": 8,
    "intervals": 7,
    "vertices": 8
  },
  "elements": [
    "NI",
    "TB"
  ],
  "flags": [
    "has_intermediate_phases"
  ],
  "isotherms": [
    {
      "element_reference": {
        "NI": {
          "energy": -8883.518967445856,
          "phase": "FCC_A1"
        },
        "TB": {
          "energy": -21855.498160083338,
          "phase": "HCP_A3"
        }
      },
      "intervals": [
        {
          "enthalpy": {
            "intercept": 0.0,
            "slope": -227484.93682451308
          },
          "entropy": {
            "intercept": 0.0,
            "slope": -46.78823265470978
          },
          "intercept": 0.0,
          "kind": "two_phase",
          "left": {
            "phase": "FCC_A1",
            "x": 0.0
          },
          "mu_a_rel": 0.0,
          "mu_b_rel": -213535.02525851136,
          "right": {
            "phase": "NI5TB_D2D",
            "x": 0.16666666666666666
          },
          "slope": -213535.02525851136,
          "x_hi": 0.16666666666666666,
          "x_lo": 0.0
        },
        {
          "enthalpy": {
            "intercept": -14704.104695894683,
            "slope": -139260.30864914498
          },
          "entropy": {
            "intercept": 0.3352196079805516,
            "slope": -48.79955030259309
          },
          "intercept": -14804.05042201408,
          "kind": "two_phase",
          "left": {
            "phase": "NI5TB_D2D",
            "x": 0.16666666666666666
          },
          "mu_a_rel": -14804.05042201408,
          "mu_b_rel": -139514.77314844096,
          "right": {
            "phase": "NI7TB2",
            "x": 0.2222222222222222
          },
          "slope": -124710.72272642689,
          "x_hi": 0.2222222222222222,
          "x_lo": 0.16666666666666666
        },
        {
          "enthalpy": {
            "intercept": -19807.121125468344,
            "slope": -116296.73471606351
          },
          "entropy": {
            "intercept": -0.34271487335061757,
            "slope": -45.74884513660283
          },
          "intercept": -19704.94068597889,
          "kind": "two_phase",
          "left": {
            "phase": "NI7TB2",
            "x": 0.2222222222222222
          },
          "mu_a_rel": -19704.94068597889,
          "mu_b_rel": -122361.65722456413,
          "right": {
            "phase": "NI3TB",
            "x": 0.25
          },
          "slope": -102656.71653858524,
          "x_hi": 0.25,
          "x_lo": 0.2222222222222222
        },
        {
          "enthalpy": {
            "intercept": -42312.77769589469,
            "slope": -26274.108434358117
          },
          "entropy": {
            "intercept": -7.762530392019407,
            "slope": -16.069583061927673
          },
          "intercept": -39998.3792595141,
          "kind": "two_phase",
          "left": {
            "phase": "NI3TB",
            "x": 0.25
          },
          "mu_a_rel": -39998.3792595141,
          "mu_b_rel": -61481.34150395851,
          "right": {
            "phase": "NITB",
            "x": 0.5
          },
          "slope": -21482.96224444441,
          "x_hi": 0.5,
          "x_lo": 0.25
        },
        {
          "enthalpy": {
            "intercept": -106486.93444771433,
            "slope": 102074.20506928115
          },
          "entropy": {
            "intercept": -31.98853162715217,
            "slope": 32.38241940833785
          },
          "intercept": -96949.55374307898,
          "kind": "two_phase",
          "left": {
            "phase": "NITB",
            "x": 0.5
          },
          "mu_a_rel": -96949.55374307898,
          "mu_b_rel": -4530.167020393623,
          "right": {
            "phase": "NI2TB3",
            "x": 0.6000000000000001
          },
          "slope": 92419.38672268536,
          "x_hi": 0.6000000000000001,
          "x_lo": 0.5
        },
        {
          "enthalpy": {
            "intercept": -108291.9165885013,
            "slope": 105082.50863725947
          },
          "entropy": {
            "intercept": -33.42244677168655,
            "slope": 34.772277982561825
          },
          "intercept": -98327.01408352291,
          "kind": "two_phase",
          "left": {
            "phase": "NI2TB3",
            "x": 0.6000000000000001
          },
          "mu_a_rel": -98327.01408352291,
          "mu_b_rel": -3611.860126764339,
          "right": {
            "phase": "NITB3_D011",
            "x": 0.75
          },
          "slope": 94715.15395675857,
          "x_hi": 0.75,
          "x_lo": 0.6000000000000001
        },
        {
          "enthalpy": {
            "intercept": -117920.14044222687,
            "slope": 117920.14044222687
          },
          "entropy": {
            "intercept": -29.37295313906074,
            "slope": 29.37295313906074
          },
          "intercept": -109162.59446381593,
          "kind": "two_phase",
          "left": {
            "phase": "NITB3_D011",
            "x": 0.75
          },
          "mu_a_rel": -109162.59446381593,
          "mu_b_rel": 0.0,
          "right": {
            "phase": "HCP_A3",
            "x": 1.0
          },
          "slope": 109162.59446381593,
          "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": "FCC_A1",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.0
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -35589.17087641856,
          "energy_per_atom": -35589.17087641856,
          "enthalpy": -37914.156137418846,
          "entries_at_x": 1,
          "entropy": -7.798038775784963,
          "formula": "",
          "nsites": null,
          "phase": "NI5TB_D2D",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.16666666666666666
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -42517.544361220054,
          "energy_per_atom": -42517.544361220054,
          "enthalpy": -45650.839951260234,
          "entries_at_x": 1,
          "entropy": -10.509124903706802,
          "formula": "",
          "nsites": null,
          "phase": "NI7TB2",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.2222222222222222
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -45369.1198206252,
          "energy_per_atom": -45369.1198206252,
          "enthalpy": -48881.30480448422,
          "entries_at_x": 1,
          "entropy": -11.779926157501325,
          "formula": "",
          "nsites": null,
          "phase": "NI3TB",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.25
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -50739.860381736304,
          "energy_per_atom": -50739.860381736304,
          "enthalpy": -55449.83191307375,
          "entries_at_x": 1,
          "entropy": -15.797321922983244,
          "formula": "",
          "nsites": null,
          "phase": "NITB",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.5
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -41497.92170946776,
          "energy_per_atom": -41497.92170946776,
          "enthalpy": -45242.41140614563,
          "entries_at_x": 1,
          "entropy": -12.559079982149456,
          "formula": "",
          "nsites": null,
          "phase": "NI2TB3",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.6000000000000001
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -27290.64861595398,
          "energy_per_atom": -27290.64861595398,
          "enthalpy": -29480.035110556717,
          "entries_at_x": 1,
          "entropy": -7.343238284765185,
          "formula": "",
          "nsites": null,
          "phase": "NITB3_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": "HCP_A3",
          "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": "NiTb-04Ron",
    "builder_version": 1,
    "engine": {
      "numpy": "2.5.1",
      "pycalphad": "0.11.2",
      "python": "3.13.15"
    },
    "fit_tol": 1.0,
    "observed_at": "2026-09-03T00:54:47Z",
    "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/NiTb-04Ron.tdb",
    "source_sha256": "796cc79d9d9131a682e7672ab486a08522a5cfd23fdc8f1f58f64fd4089653d8"
  },
  "reference": {
    "kind": "calphad_formation_T",
    "per": "mole_atoms",
    "temperature_K": 298.15,
    "units": "J/mol-atoms"
  },
  "schema_version": 1,
  "system_id": "NI-TB",
  "x_element": "TB"
}