{
  "counts": {
    "above_hull": 0,
    "entries": 4,
    "intervals": 3,
    "vertices": 4
  },
  "elements": [
    "TA",
    "W"
  ],
  "flags": [
    "no_intermediate_phases",
    "order_disorder_collapsed",
    "redundant_phase_descriptions",
    "solution_phases"
  ],
  "isotherms": [
    {
      "element_reference": {
        "TA": {
          "energy": -12364.820208062849,
          "phase": "BCC_A2"
        },
        "W": {
          "energy": -9724.926926857079,
          "phase": "BCC_A2"
        }
      },
      "intervals": [
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                0.0,
                -431.00845714875913,
                -10.309155429976272,
                0.3095593298124868
              ]
            ],
            "knots": [
              0.0,
              0.01730979736668327
            ],
            "max_abs_error": 0.00032712987811578387
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                0.0,
                -0.09992712016853528,
                0.0014754414759135526,
                -8.271244570923209e-06
              ]
            ],
            "knots": [
              0.0,
              0.01730979736668327
            ],
            "max_abs_error": 1.9639074287924885e-06
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              0.0,
              -401.2151862704285,
              -10.749058306178597,
              0.3120254014568786
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.0,
            0.01730979736668327
          ],
          "max_abs_error": 0.0009124811959964063,
          "phase": "A2_BCC",
          "x_hi": 0.01730979736668327,
          "x_lo": 0.0
        },
        {
          "enthalpy": {
            "intercept": 117.461180221819,
            "slope": -32263.187236705955
          },
          "entropy": {
            "intercept": 0.5051896427178393,
            "slope": 7.096265483938341
          },
          "intercept": -33.161111754505896,
          "kind": "two_phase",
          "left": {
            "phase": "A2_BCC",
            "x": 0.01730979736668327
          },
          "mu_a_rel": -33.161111754505896,
          "mu_b_rel": -34412.09990249668,
          "right": {
            "phase": "B2_BCC",
            "x": 0.2730273971547149
          },
          "slope": -34378.93879074218,
          "x_hi": 0.2730273971547149,
          "x_lo": 0.01730979736668327
        },
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                -8691.272854931227,
                -1198.2928478883996,
                12.830531955083188,
                1.3152274220033178
              ],
              [
                -9875.419943442543,
                -1947.819041870255,
                53.586814409400404,
                9.473136498834492
              ],
              [
                -11760.179034404562,
                -1449.8035177325023,
                56.46612118430335,
                4.7686710770847185
              ],
              [
                -13148.747759875681,
                -1322.7137934579534,
                75.09302128309264,
                8.092195244714276
              ],
              [
                -14388.27633680583,
                -1151.8100248669796,
                70.36189150702853,
                115.07511055478676
              ],
              [
                -15354.649359610994,
                -600.0934472541089,
                402.01830190091823,
                -105.23335309820142
              ],
              [
                -15657.957858062382,
                -86.40363823516145,
                70.5898042149247,
                -0.11500807175344363
              ],
              [
                -15673.88670015438,
                90.37623707151343,
                199.17000420002103,
                8.438648339879478
              ],
              [
                -15375.901810542964,
                308.403662699281,
                83.5491319097024,
                1.3635966354335096
              ],
              [
                -14982.585419298548,
                799.3117301541984,
                250.77876519633674,
                9.787486470595923
              ],
              [
                -13922.707437477417,
                798.13738829689,
                103.56529580485585,
                1.4112697809068777
              ],
              [
                -13019.593483594763,
                1682.501676314031,
                306.9778527011413,
                9.910375972153815
              ],
              [
                -11020.20357860744,
                1752.5386049704157,
                -484.72526658151946,
                257.89402122931824
              ],
              [
                -9494.496218989221,
                2594.366888127093,
                380.70858689298575,
                9.124406238552638
              ],
              [
                -6510.29633773059,
                3383.157228357299,
                413.2953944552346,
                9.124333627607484
              ],
              [
                -2704.7193812904484,
                2542.272596125625,
                161.14368434590324,
                1.303100818920484
              ]
            ],
            "knots": [
              0.2730273971547149,
              0.30710422695906153,
              0.3638989623722532,
              0.40933475070280656,
              0.4547705390333599,
              0.5002063273639132,
              0.5456421156944666,
              0.5797189569423815,
              0.6365136923555732,
              0.6705905336034883,
              0.72738526901668,
              0.7614621102645949,
              0.8182568456777866,
              0.8523336869257017,
              0.9091284223388933,
              0.965923157752085,
              1.0
            ],
            "max_abs_error": 7.64130433272112
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                -2.431662251263228,
                -0.36518547615834146,
                0.016018866186945202,
                -0.0007793004884515953
              ],
              [
                -2.781608161723077,
                -0.5590989923371675,
                0.03416036042812243,
                -0.0069882468968329725
              ],
              [
                -3.3135350405289543,
                -0.30695275686003287,
                0.002038278766137158,
                -0.0015602683182126542
              ],
              [
                -3.620009786941064,
                -0.5123533523409325,
                -0.017917224795280906,
                -0.014646003129798468
              ],
              [
                -4.164926367207076,
                -0.4816022018838169,
                -0.173315711100896,
                0.2830518773995134
              ],
              [
                -4.536792402792274,
                0.21040919919751316,
                0.6218218806037852,
                -0.2784727919758625
              ],
              [
                -3.9830341149668387,
                0.7637895843274153,
                -0.1208967050559131,
                0.01803392858011832
              ],
              [
                -3.3221073071152203,
                0.34580628490593623,
                -0.019404559841440072,
                0.002010398931227453
              ],
              [
                -2.9936951831194953,
                0.5218741270806095,
                -0.027205577573279627,
                0.009985966127136259
              ],
              [
                -2.489040667485029,
                0.2984836877272226,
                0.0031442699054183842,
                0.0011768162049156095
              ],
              [
                -2.1862358936474724,
                0.3083116669996451,
                0.009405027531996346,
                0.0011313384903628432
              ],
              [
                -1.8673878606254677,
                0.5508424037512674,
                0.04134465733192727,
                0.008607981844432788
              ],
              [
                -1.2665928176978403,
                1.4624704078546913,
                -1.758938882221176,
                0.73637227392536
              ],
              [
                -0.826689018138965,
                0.2561824448244575,
                0.0233509004214818,
                0.00014362300597836608
              ],
              [
                -0.5470120498870474,
                0.303315139227709,
                0.02386401458329468,
                0.0001434507704414223
              ],
              [
                -0.21968944530560242,
                0.21088421963529974,
                0.008785055087987714,
                2.017058231496005e-05
              ]
            ],
            "knots": [
              0.2730273971547149,
              0.30710422695906153,
              0.3638989623722532,
              0.3979758036201682,
              0.4547705390333599,
              0.5002063273639132,
              0.5456421156944666,
              0.6024368511076583,
              0.6365136923555732,
              0.6933084277687649,
              0.72738526901668,
              0.7614621102645949,
              0.8182568456777866,
              0.8523336869257017,
              0.9091284223388933,
              0.965923157752085,
              1.0
            ],
            "max_abs_error": 0.021818437745936725
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              -7966.272754717099,
              -1089.412798171752,
              8.054507001393631,
              1.5475758626457718
            ],
            [
              -9046.083470024812,
              -1781.1236773048656,
              43.40190294764966,
              11.556682311171016
            ],
            [
              -10772.248562070858,
              -1327.7795651220829,
              55.05868322295851,
              6.3625667527282985
            ],
            [
              -12038.606877217255,
              -1198.7747948428864,
              80.87691670983236,
              10.001214927255432
            ],
            [
              -13146.503540423048,
              -1008.2203283752865,
              122.03597077169172,
              30.683193308174737
            ],
            [
              -14002.004704718474,
              -662.8269499948674,
              216.62210819893875,
              -22.20669017062022
            ],
            [
              -14470.41623668502,
              -297.3839426339371,
              147.4459660190106,
              -1.615854224342118
            ],
            [
              -14621.970067524282,
              -7.537262065569555,
              144.20340740376486,
              1.9723304902007044
            ],
            [
              -14483.331591695885,
              215.0456001058103,
              86.30383484284704,
              0.9084962686303584
            ],
            [
              -14181.0736604786,
              650.5963435922994,
              252.35369509156635,
              7.242416008306009
            ],
            [
              -13270.881205786427,
              1177.0237746349355,
              278.4676367052764,
              7.508534582886341
            ],
            [
              -11807.881259863334,
              1053.897849275954,
              110.38031994967969,
              1.034160626866651
            ],
            [
              -10642.568930010832,
              1316.5030528685436,
              39.702361152727235,
              38.34462775846828
            ],
            [
              -9248.01888823109,
              2517.986092202689,
              373.74651593234194,
              9.081585039288257
            ],
            [
              -6347.204695056771,
              3292.723819596583,
              406.1803385071953,
              9.081563780409851
            ],
            [
              -2639.218973172584,
              2479.3974660413674,
              158.5244201714031,
              1.2970869598134414
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.2730273971547149,
            0.30710422695906153,
            0.3638989623722532,
            0.40933475070280656,
            0.4547705390333599,
            0.5002063273639132,
            0.5456421156944666,
            0.5910779040250199,
            0.6365136923555732,
            0.6705905336034883,
            0.72738526901668,
            0.7841800044298717,
            0.8182568456777866,
            0.8523336869257017,
            0.9091284223388933,
            0.965923157752085,
            1.0
          ],
          "max_abs_error": 1.1361371187704208,
          "phase": "B2_BCC",
          "x_hi": 1.0,
          "x_lo": 0.2730273971547149
        }
      ],
      "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": "A2_BCC",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.0
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -628.2535759038601,
          "energy_per_atom": -628.2535759038601,
          "enthalpy": -441.008053248923,
          "entries_at_x": 1,
          "entropy": 0.6280245603050005,
          "formula": "",
          "nsites": null,
          "phase": "A2_BCC",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.01730979736668327
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -9419.553286732105,
          "energy_per_atom": -9419.553286732105,
          "enthalpy": -8691.272854931227,
          "entries_at_x": 1,
          "entropy": 2.442664537316368,
          "formula": "",
          "nsites": null,
          "phase": "B2_BCC",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.2730273971547149
        },
        {
          "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": "B2_BCC",
          "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": "TaW-01Kau-LB",
    "builder_version": 1,
    "engine": {
      "numpy": "2.5.1",
      "pycalphad": "0.11.2",
      "python": "3.13.15"
    },
    "fit_tol": 1.0,
    "observed_at": "2026-09-03T01:02:49Z",
    "phase_families": {
      "BCC_A2": "A2_BCC"
    },
    "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/TaW-01Kau-LB.tdb",
    "source_sha256": "06799384d8b11b4b04e0fc0b6ec36c4de6f1dcd5987541ea5a27822be8b8faa7"
  },
  "reference": {
    "kind": "calphad_formation_T",
    "per": "mole_atoms",
    "temperature_K": 298.15,
    "units": "J/mol-atoms"
  },
  "schema_version": 1,
  "system_id": "TA-W",
  "x_element": "W"
}
