{
  "counts": {
    "above_hull": 0,
    "entries": 5,
    "intervals": 4,
    "vertices": 5
  },
  "elements": [
    "TA",
    "V"
  ],
  "flags": [
    "has_intermediate_phases",
    "solution_phases"
  ],
  "isotherms": [
    {
      "element_reference": {
        "TA": {
          "energy": -12364.820195420005,
          "phase": "BCC_A2"
        },
        "V": {
          "energy": -9209.853375945928,
          "phase": "BCC_A2"
        }
      },
      "intervals": [
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                0.0,
                -426.7913238033709,
                65.780898201926,
                -1.9012571452298062
              ]
            ],
            "knots": [
              0.0,
              0.03862022293402959
            ],
            "max_abs_error": 0.00021770596219994331
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                0.0,
                -2.88465428293053e-06,
                1.8956410826789355e-05,
                -1.0129404595351928e-05
              ]
            ],
            "knots": [
              0.0,
              0.03862022293402959
            ],
            "max_abs_error": 1.6307788922016927e-06
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              0.0,
              -426.7904637434624,
              65.77524634776188,
              -1.8982370632077732
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.0,
            0.03862022293402959
          ],
          "max_abs_error": 0.000698946216473928,
          "phase": "BCC_A2#1",
          "x_hi": 0.03862022293402959,
          "x_lo": 0.0
        },
        {
          "enthalpy": {
            "intercept": 325.2242179762034,
            "slope": -17818.01989849567
          },
          "entropy": {
            "intercept": 1.626153491943192,
            "slope": -6.899224681826725
          },
          "intercept": -159.61344564665944,
          "kind": "two_phase",
          "left": {
            "phase": "BCC_A2#1",
            "x": 0.03862022293402959
          },
          "mu_a_rel": -159.61344564665944,
          "mu_b_rel": -15920.629505255689,
          "right": {
            "phase": "C14_LAVES",
            "x": 0.6665595267275571
          },
          "slope": -15761.01605960903,
          "x_hi": 0.6665595267275571,
          "x_lo": 0.03862022293402959
        },
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                -11551.546692787266,
                -4.640635558367846,
                -8.080857098722543,
                9.325576743560003
              ]
            ],
            "knots": [
              0.6665595267275571,
              0.6666792845415248
            ],
            "max_abs_error": 0.898857080426751
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                -8.265480953388678,
                -0.008544239972090594,
                -0.01633015300241445,
                0.017698308124334462
              ]
            ],
            "knots": [
              0.6665595267275571,
              0.6666792845415248
            ],
            "max_abs_error": 0.0017900464029363405
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              -9087.19354653443,
              -2.093170410916899,
              -3.212021980574829,
              4.048826176042095
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.6665595267275571,
            0.6666792845415248
          ],
          "max_abs_error": 0.3651547454082902,
          "phase": "C14_LAVES",
          "x_hi": 0.6666792845415248,
          "x_lo": 0.6665595267275571
        },
        {
          "enthalpy": {
            "intercept": -34666.140065153864,
            "slope": 34666.140065153864
          },
          "entropy": {
            "intercept": -8.941707981049772,
            "slope": 8.941707981049772
          },
          "intercept": -32000.16983060387,
          "kind": "two_phase",
          "left": {
            "phase": "C14_LAVES",
            "x": 0.6666792845415248
          },
          "mu_a_rel": -32000.16983060387,
          "mu_b_rel": 0.0,
          "right": {
            "phase": "BCC_A2#2",
            "x": 1.0
          },
          "slope": 32000.16983060387,
          "x_hi": 1.0,
          "x_lo": 0.6666792845415248
        }
      ],
      "phase_instances": {
        "BCC_A2#1": "BCC_A2",
        "BCC_A2#2": "BCC_A2"
      },
      "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": "BCC_A2#1",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.0
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -768.3073995355808,
          "energy_per_atom": -768.3073995355808,
          "enthalpy": -362.91168274667467,
          "entries_at_x": 1,
          "entropy": 1.3597038966590844,
          "formula": "",
          "nsites": null,
          "phase": "BCC_A2#1",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.03862022293402959
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -10665.268851085082,
          "energy_per_atom": -10665.268851085082,
          "enthalpy": -11551.546692787266,
          "entries_at_x": 1,
          "entropy": -2.972590446762311,
          "formula": "",
          "nsites": null,
          "phase": "C14_LAVES",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.6665595267275571
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -10666.319502729595,
          "energy_per_atom": -10666.319502729595,
          "enthalpy": -11554.942608700798,
          "entries_at_x": 1,
          "entropy": -2.9804565016642677,
          "formula": "",
          "nsites": null,
          "phase": "C14_LAVES",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.6666792845415248
        },
        {
          "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#2",
          "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": "TaV-11Pav",
    "builder_version": 1,
    "engine": {
      "numpy": "2.5.1",
      "pycalphad": "0.11.2",
      "python": "3.13.15"
    },
    "fit_tol": 1.0,
    "observed_at": "2026-09-03T01:02:42Z",
    "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/TaV-11Pav.tdb",
    "source_sha256": "773e8a82344b28f3e739a61c9b5a540002e0448854ce38bf3e2ce9493baa5609"
  },
  "reference": {
    "kind": "calphad_formation_T",
    "per": "mole_atoms",
    "temperature_K": 298.15,
    "units": "J/mol-atoms"
  },
  "schema_version": 1,
  "system_id": "TA-V",
  "x_element": "V"
}
