{
  "counts": {
    "above_hull": 0,
    "entries": 6,
    "intervals": 5,
    "vertices": 6
  },
  "elements": [
    "SI",
    "V"
  ],
  "flags": [
    "has_intermediate_phases",
    "solution_phases"
  ],
  "isotherms": [
    {
      "element_reference": {
        "SI": {
          "energy": -5608.2117875478925,
          "phase": "DIAMOND_A4"
        },
        "V": {
          "energy": -9209.853538081314,
          "phase": "BCC_A2"
        }
      },
      "intervals": [
        {
          "enthalpy": {
            "intercept": 0.0,
            "slope": -139213.4766212721
          },
          "entropy": {
            "intercept": 0.0,
            "slope": -14.52040491196302
          },
          "intercept": 0.0,
          "kind": "two_phase",
          "left": {
            "phase": "DIAMOND_A4",
            "x": 0.0
          },
          "mu_a_rel": 0.0,
          "mu_b_rel": -134884.2178967703,
          "right": {
            "phase": "SI2V_C40",
            "x": 0.3333333333333333
          },
          "slope": -134884.2178967703,
          "x_hi": 0.3333333333333333,
          "x_lo": 0.0
        },
        {
          "enthalpy": {
            "intercept": -36104.36918807292,
            "slope": -30900.369057053358
          },
          "entropy": {
            "intercept": -2.7425862738668214,
            "slope": -6.292646090362556
          },
          "intercept": -35286.6670905195,
          "kind": "two_phase",
          "left": {
            "phase": "SI2V_C40",
            "x": 0.3333333333333333
          },
          "mu_a_rel": -35286.6670905195,
          "mu_b_rel": -64310.88371573131,
          "right": {
            "phase": "SI3V5_D8M",
            "x": 0.625
          },
          "slope": -29024.216625211808,
          "x_hi": 0.625,
          "x_lo": 0.3333333333333333
        },
        {
          "enthalpy": {
            "intercept": -111128.59986325752,
            "slope": 89138.40002324201
          },
          "entropy": {
            "intercept": -7.693490006070151,
            "slope": 1.6287998811627713
          },
          "intercept": -108834.7858179477,
          "kind": "two_phase",
          "left": {
            "phase": "SI3V5_D8M",
            "x": 0.625
          },
          "mu_a_rel": -108834.7858179477,
          "mu_b_rel": -20182.012479274374,
          "right": {
            "phase": "SIV3_A15",
            "x": 0.749999999999995
          },
          "slope": 88652.77333867333,
          "x_hi": 0.749999999999995,
          "x_lo": 0.625
        },
        {
          "enthalpy": {
            "intercept": -177105.5451742087,
            "slope": 177107.66043784417
          },
          "entropy": {
            "intercept": -25.911678998680113,
            "slope": 25.919718537976216
          },
          "intercept": -169379.97808075222,
          "kind": "two_phase",
          "left": {
            "phase": "SIV3_A15",
            "x": 0.749999999999995
          },
          "mu_a_rel": -169379.97808075222,
          "mu_b_rel": -0.2817250056541525,
          "right": {
            "phase": "BCC_A2",
            "x": 0.9998872408014502
          },
          "slope": 169379.69635574656,
          "x_hi": 0.9998872408014502,
          "x_lo": 0.749999999999995
        },
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                -17.855254212535304,
                17.852801338373247,
                0.017331129801085865,
                -0.014878255639025895
              ]
            ],
            "knots": [
              0.9998872408014502,
              1.0
            ],
            "max_abs_error": 0.00213437783624304
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                -0.00434303384545303,
                0.004342132171138829,
                -1.1296358075071379e-05,
                1.219803238927241e-05
              ]
            ],
            "knots": [
              0.9998872408014502,
              1.0
            ],
            "max_abs_error": 1.7504055464614456e-06
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              -16.560378671513412,
              16.55819463145897,
              0.02069913879499552,
              -0.018515098740554237
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.9998872408014502,
            1.0
          ],
          "max_abs_error": 0.002656261192581333,
          "phase": "BCC_A2",
          "x_hi": 1.0,
          "x_lo": 0.9998872408014502
        }
      ],
      "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": "DIAMOND_A4",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.0
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -44961.4059655901,
          "energy_per_atom": -44961.4059655901,
          "enthalpy": -46404.4922070907,
          "entries_at_x": 1,
          "entropy": -4.84013497065434,
          "formula": "",
          "nsites": null,
          "phase": "SI2V_C40",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.3333333333333333
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -53426.80248127688,
          "energy_per_atom": -53426.80248127688,
          "enthalpy": -55417.09984873126,
          "entries_at_x": 1,
          "entropy": -6.675490080343419,
          "formula": "",
          "nsites": null,
          "phase": "SI3V5_D8M",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.625
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -42345.205813943154,
          "energy_per_atom": -42345.205813943154,
          "enthalpy": -44274.799845826456,
          "entries_at_x": 1,
          "entropy": -6.471890095198081,
          "formula": "",
          "nsites": null,
          "phase": "SIV3_A15",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.749999999999995
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -19.38084381734916,
          "energy_per_atom": -19.38084381734916,
          "enthalpy": -17.855254212535304,
          "entries_at_x": 1,
          "entropy": 0.00511685260712369,
          "formula": "",
          "nsites": null,
          "phase": "BCC_A2",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.9998872408014502
        },
        {
          "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": "SiV-08Zha",
    "builder_version": 1,
    "engine": {
      "numpy": "2.5.1",
      "pycalphad": "0.11.2",
      "python": "3.13.15"
    },
    "fit_tol": 1.0,
    "observed_at": "2026-09-03T01:01:25Z",
    "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/SiV-08Zha.tdb",
    "source_sha256": "d01d1621f6968f15e8ca1175cee9277ffbac8337f3e6073954f8c4df9ac13dde"
  },
  "reference": {
    "kind": "calphad_formation_T",
    "per": "mole_atoms",
    "temperature_K": 298.15,
    "units": "J/mol-atoms"
  },
  "schema_version": 1,
  "system_id": "SI-V",
  "x_element": "V"
}