{
  "counts": {
    "above_hull": 0,
    "entries": 5,
    "intervals": 4,
    "vertices": 5
  },
  "elements": [
    "B",
    "ND"
  ],
  "flags": [
    "has_intermediate_phases"
  ],
  "isotherms": [
    {
      "element_reference": {
        "B": {
          "energy": -1759.0893076812413,
          "phase": "BETA_RHOMBO_B"
        },
        "ND": {
          "energy": -21194.351285712433,
          "phase": "DHCP"
        }
      },
      "intervals": [
        {
          "enthalpy": {
            "intercept": 0.0,
            "slope": -398999.9753582954
          },
          "entropy": {
            "intercept": 0.0,
            "slope": 5.043356397174062
          },
          "intercept": 0.0,
          "kind": "two_phase",
          "left": {
            "phase": "BETA_RHOMBO_B",
            "x": 0.0
          },
          "mu_a_rel": 0.0,
          "mu_b_rel": -400503.6520681128,
          "right": {
            "phase": "NDB6_D21",
            "x": 0.14285714285714285
          },
          "slope": -400503.6520681128,
          "x_hi": 0.14285714285714285,
          "x_lo": 0.0
        },
        {
          "enthalpy": {
            "intercept": -61999.996009754046,
            "slope": 34999.99670998296
          },
          "entropy": {
            "intercept": -2.865545702338887,
            "slope": 25.102176313546273
          },
          "intercept": -61145.63355860169,
          "kind": "two_phase",
          "left": {
            "phase": "NDB6_D21",
            "x": 0.14285714285714285
          },
          "mu_a_rel": -61145.63355860169,
          "mu_b_rel": -33629.85071650267,
          "right": {
            "phase": "NDB4_D1E",
            "x": 0.2
          },
          "slope": 27515.782842099023,
          "x_hi": 0.2,
          "x_lo": 0.14285714285714285
        },
        {
          "enthalpy": {
            "intercept": -66666.66267642066,
            "slope": 58333.330043316026
          },
          "entropy": {
            "intercept": 0.37392596432774705,
            "slope": 8.904817980213103
          },
          "intercept": -66778.14870268498,
          "kind": "two_phase",
          "left": {
            "phase": "NDB4_D1E",
            "x": 0.2
          },
          "mu_a_rel": -66778.14870268498,
          "mu_b_rel": -11099.79014016949,
          "right": {
            "phase": "ND2B5",
            "x": 0.2857142857142857
          },
          "slope": 55678.35856251549,
          "x_hi": 0.2857142857142857,
          "x_lo": 0.2
        },
        {
          "enthalpy": {
            "intercept": -69999.99572966252,
            "slope": 69999.99572966252
          },
          "entropy": {
            "intercept": 4.0854235421440865,
            "slope": -4.0854235421440865
          },
          "intercept": -71218.06475875278,
          "kind": "two_phase",
          "left": {
            "phase": "ND2B5",
            "x": 0.2857142857142857
          },
          "mu_a_rel": -71218.06475875278,
          "mu_b_rel": 0.0,
          "right": {
            "phase": "DHCP",
            "x": 1.0
          },
          "slope": 71218.06475875278,
          "x_hi": 1.0,
          "x_lo": 0.2857142857142857
        }
      ],
      "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": -57214.807438301825,
          "energy_per_atom": -57214.807438301825,
          "enthalpy": -56999.99647975648,
          "entries_at_x": 1,
          "entropy": 0.7204794853105803,
          "formula": "",
          "nsites": null,
          "phase": "NDB6_D21",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.14285714285714285
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -55642.47699018188,
          "energy_per_atom": -55642.47699018188,
          "enthalpy": -54999.996667757456,
          "entries_at_x": 1,
          "entropy": 2.1548895603703677,
          "formula": "",
          "nsites": null,
          "phase": "NDB4_D1E",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.2
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -50870.04625625198,
          "energy_per_atom": -50870.04625625198,
          "enthalpy": -49999.99694975894,
          "entries_at_x": 1,
          "entropy": 2.918159672960062,
          "formula": "",
          "nsites": null,
          "phase": "ND2B5",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.2857142857142857
        },
        {
          "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": "DHCP",
          "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": "NdB-98Che",
    "builder_version": 1,
    "engine": {
      "numpy": "2.5.1",
      "pycalphad": "0.11.2",
      "python": "3.13.15"
    },
    "fit_tol": 1.0,
    "observed_at": "2026-09-03T00:51:37Z",
    "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/NdB-98Che.tdb",
    "source_sha256": "502e0edcb7d117b4a2497ba7d44c99b5143944f45175f4c54963b4d25486498a"
  },
  "reference": {
    "kind": "calphad_formation_T",
    "per": "mole_atoms",
    "temperature_K": 298.15,
    "units": "J/mol-atoms"
  },
  "schema_version": 1,
  "system_id": "B-ND",
  "x_element": "ND"
}
