{
  "counts": {
    "above_hull": 0,
    "entries": 9,
    "intervals": 8,
    "vertices": 9
  },
  "elements": [
    "AL",
    "V"
  ],
  "flags": [
    "has_intermediate_phases",
    "solution_phases"
  ],
  "isotherms": [
    {
      "element_reference": {
        "AL": {
          "energy": -8437.646077845795,
          "phase": "FCC_A1"
        },
        "V": {
          "energy": -9209.853481445212,
          "phase": "BCC_A2"
        }
      },
      "intervals": [
        {
          "enthalpy": {
            "intercept": 0.0,
            "slope": -123383.4993171517
          },
          "entropy": {
            "intercept": 0.0,
            "slope": -24.49500210234308
          },
          "intercept": 0.0,
          "kind": "two_phase",
          "left": {
            "phase": "FCC_A1",
            "x": 0.0
          },
          "mu_a_rel": 0.0,
          "mu_b_rel": -116080.31444033807,
          "right": {
            "phase": "AL21V2",
            "x": 0.08695652173913043
          },
          "slope": -116080.31444033807,
          "x_hi": 0.08695652173913043,
          "x_lo": 0.0
        },
        {
          "enthalpy": {
            "intercept": -193.9823989083652,
            "slope": -121152.7017297055
          },
          "entropy": {
            "intercept": 0.16894718691294974,
            "slope": -26.437894751842002
          },
          "intercept": -244.35400268645026,
          "kind": "two_phase",
          "left": {
            "phase": "AL21V2",
            "x": 0.08695652173913043
          },
          "mu_a_rel": -244.35400268645026,
          "mu_b_rel": -113514.59741213034,
          "right": {
            "phase": "AL45V7",
            "x": 0.13461538461538464
          },
          "slope": -113270.2434094439,
          "x_hi": 0.13461538461538464,
          "x_lo": 0.08695652173913043
        },
        {
          "enthalpy": {
            "intercept": -1333.2631006627598,
            "slope": -112689.47365952999
          },
          "entropy": {
            "intercept": -0.5052633394027932,
            "slope": -21.429473699210767
          },
          "intercept": -1182.6188360197866,
          "kind": "two_phase",
          "left": {
            "phase": "AL45V7",
            "x": 0.13461538461538464
          },
          "mu_a_rel": -1182.6188360197866,
          "mu_b_rel": -107482.89491213033,
          "right": {
            "phase": "AL23V4",
            "x": 0.14814814814814814
          },
          "slope": -106300.27607611055,
          "x_hi": 0.14814814814814814,
          "x_lo": 0.13461538461538464
        },
        {
          "enthalpy": {
            "intercept": -3357.454488222542,
            "slope": -99026.18179350147
          },
          "entropy": {
            "intercept": -2.458181999689927,
            "slope": -8.247272742272614
          },
          "intercept": -2624.5475250149902,
          "kind": "two_phase",
          "left": {
            "phase": "AL23V4",
            "x": 0.14814814814814814
          },
          "mu_a_rel": -2624.5475250149902,
          "mu_b_rel": -99191.80495040791,
          "right": {
            "phase": "AL3M_D022",
            "x": 0.25
          },
          "slope": -96567.25742539292,
          "x_hi": 0.25,
          "x_lo": 0.14814814814814814
        },
        {
          "enthalpy": {
            "intercept": -33805.99994481733,
            "slope": 22768.00003287769
          },
          "entropy": {
            "intercept": -6.280000189098237,
            "slope": 7.040000015360626
          },
          "intercept": -31933.617888437704,
          "kind": "two_phase",
          "left": {
            "phase": "AL3M_D022",
            "x": 0.25
          },
          "mu_a_rel": -31933.617888437704,
          "mu_b_rel": -11264.593860139772,
          "right": {
            "phase": "ALV3_A15",
            "x": 0.7499999999381192
          },
          "slope": 20669.024028297932,
          "x_hi": 0.7499999999381192,
          "x_lo": 0.25
        },
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                -16729.999921567967,
                0.566601467835735,
                0.001736071308442999,
                -0.0008640127837510336
              ]
            ],
            "knots": [
              0.7499999999381192,
              0.7500065589022007
            ],
            "max_abs_error": 0.0001244531995325815
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                -5.6755147173855285,
                0.0009849323246287306,
                -0.000483520657215024,
                0.00021450141732593398
              ]
            ],
            "knots": [
              0.7499999999381192,
              0.7500065589022007
            ],
            "max_abs_error": 2.4156239971873106e-05
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              -15037.845208579474,
              0.27294389524203033,
              0.14589775566405883,
              -0.06481761075979597
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.7499999999381192,
            0.7500065589022007
          ],
          "max_abs_error": 0.0073256827890872955,
          "phase": "ALV3_A15",
          "x_hi": 0.7500065589022007,
          "x_lo": 0.7499999999381192
        },
        {
          "enthalpy": {
            "intercept": -68740.6638338451,
            "slope": 69347.70205467717
          },
          "entropy": {
            "intercept": -26.580736980530663,
            "slope": 34.108225453497546
          },
          "intercept": -60815.617103099925,
          "kind": "two_phase",
          "left": {
            "phase": "ALV3_A15",
            "x": 0.7500065589022007
          },
          "mu_a_rel": -60815.617103099925,
          "mu_b_rel": -1637.2824673830037,
          "right": {
            "phase": "BCC_A2",
            "x": 0.8822657468251449
          },
          "slope": 59178.33463571692,
          "x_hi": 0.8822657468251449,
          "x_lo": 0.7500065589022007
        },
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                -7557.561689967714,
                6228.086179527832,
                1307.8156924935902,
                21.659817946290786
              ]
            ],
            "knots": [
              0.8822657468251449,
              1.0
            ],
            "max_abs_error": 0.0020295414678912493
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                0.4987354366363066,
                -0.5077962760198956,
                0.009059309032561025,
                1.5303510280118005e-06
              ]
            ],
            "knots": [
              0.8822657468251449,
              1.0
            ],
            "max_abs_error": 8.081752310151735e-07
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              -7706.259660400827,
              6379.485639222856,
              1305.1146595064165,
              21.659361671552688
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.8822657468251449,
            1.0
          ],
          "max_abs_error": 0.002268974469643581,
          "phase": "BCC_A2",
          "x_hi": 1.0,
          "x_lo": 0.8822657468251449
        }
      ],
      "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": -10093.940386116354,
          "energy_per_atom": -10093.940386116354,
          "enthalpy": -10728.999940621887,
          "entries_at_x": 1,
          "entropy": -2.1300001828124415,
          "formula": "",
          "nsites": null,
          "phase": "AL21V2",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.08695652173913043
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -15492.271384726977,
          "energy_per_atom": -15492.271384726977,
          "enthalpy": -16502.999939445646,
          "entries_at_x": 1,
          "entropy": -3.39000018352732,
          "formula": "",
          "nsites": null,
          "phase": "AL45V7",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.13461538461538464
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -16930.80788433246,
          "energy_per_atom": -16930.80788433246,
          "enthalpy": -18027.999939111647,
          "entries_at_x": 1,
          "entropy": -3.6800001837303142,
          "formula": "",
          "nsites": null,
          "phase": "AL23V4",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.14814814814814814
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -26766.36188136322,
          "energy_per_atom": -26766.36188136322,
          "enthalpy": -28113.99993659791,
          "entries_at_x": 1,
          "entropy": -4.5200001852580804,
          "formula": "",
          "nsites": null,
          "phase": "AL3M_D022",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.25
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -16431.84986849327,
          "energy_per_atom": -16431.84986849327,
          "enthalpy": -16729.999921567967,
          "entries_at_x": 1,
          "entropy": -1.0000001780134085,
          "formula": "",
          "nsites": null,
          "phase": "ALV3_A15",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.7499999999381192
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -16431.477981402957,
          "energy_per_atom": -16431.477981402957,
          "enthalpy": -16729.432448041607,
          "entries_at_x": 1,
          "entropy": -0.9993441778925138,
          "formula": "",
          "nsites": null,
          "phase": "ALV3_A15",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.7500065589022007
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -8604.599499850794,
          "energy_per_atom": -8604.599499850794,
          "enthalpy": -7557.561689967714,
          "entries_at_x": 1,
          "entropy": 3.5117820220797675,
          "formula": "",
          "nsites": null,
          "phase": "BCC_A2",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.8822657468251449
        },
        {
          "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",
          "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": "AlV-15Lin-mod",
    "builder_version": 1,
    "engine": {
      "numpy": "2.5.1",
      "pycalphad": "0.11.2",
      "python": "3.13.15"
    },
    "fit_tol": 1.0,
    "observed_at": "2026-09-03T00:14:48Z",
    "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/AlV-15Lin-mod.tdb",
    "source_sha256": "2d029308dea57e5192758cb133307a9aef084185ca710379aea48ce9193d2d54"
  },
  "reference": {
    "kind": "calphad_formation_T",
    "per": "mole_atoms",
    "temperature_K": 298.15,
    "units": "J/mol-atoms"
  },
  "schema_version": 1,
  "system_id": "AL-V",
  "x_element": "V"
}