{
  "counts": {
    "above_hull": 0,
    "entries": 6,
    "intervals": 5,
    "vertices": 6
  },
  "elements": [
    "HF",
    "SI"
  ],
  "flags": [
    "has_intermediate_phases"
  ],
  "isotherms": [
    {
      "element_reference": {
        "HF": {
          "energy": -12987.41432119639,
          "phase": "HCP_A3"
        },
        "SI": {
          "energy": -5608.211856348348,
          "phase": "DIAMOND_A4"
        }
      },
      "intervals": [
        {
          "enthalpy": {
            "intercept": 0.0,
            "slope": -191354.9994069707
          },
          "entropy": {
            "intercept": 0.0,
            "slope": -4.6238999344309235
          },
          "intercept": 0.0,
          "kind": "two_phase",
          "left": {
            "phase": "HCP_A3",
            "x": 0.0
          },
          "mu_a_rel": 0.0,
          "mu_b_rel": -189976.38364152014,
          "right": {
            "phase": "HF2SI_C16",
            "x": 0.3333333333333333
          },
          "slope": -189976.38364152014,
          "x_hi": 0.3333333333333333,
          "x_lo": 0.0
        },
        {
          "enthalpy": {
            "intercept": 1150.0001917659538,
            "slope": -194804.99998226855
          },
          "entropy": {
            "intercept": 4.900200029434256,
            "slope": -19.32450002273369
          },
          "intercept": -310.994447009929,
          "kind": "two_phase",
          "left": {
            "phase": "HF2SI_C16",
            "x": 0.3333333333333333
          },
          "mu_a_rel": -310.994447009929,
          "mu_b_rel": -189354.39474750028,
          "right": {
            "phase": "HF3SI2_D5A",
            "x": 0.4
          },
          "slope": -189043.40030049035,
          "x_hi": 0.4,
          "x_lo": 0.3333333333333333
        },
        {
          "enthalpy": {
            "intercept": -92836.99980823441,
            "slope": 40162.50001773235
          },
          "entropy": {
            "intercept": -9.795599970565455,
            "slope": 17.414999977265584
          },
          "intercept": -89916.44167701028,
          "kind": "two_phase",
          "left": {
            "phase": "HF3SI2_D5A",
            "x": 0.4
          },
          "mu_a_rel": -89916.44167701028,
          "mu_b_rel": -54946.223902499754,
          "right": {
            "phase": "HF5SI4",
            "x": 0.4444444444444444
          },
          "slope": 34970.21777451053,
          "x_hi": 0.4444444444444444,
          "x_lo": 0.4
        },
        {
          "enthalpy": {
            "intercept": -85510.99980823416,
            "slope": 23679.000017731785
          },
          "entropy": {
            "intercept": 14.793200029434374,
            "slope": -37.90980002273403
          },
          "intercept": -89921.59239701001,
          "kind": "two_phase",
          "left": {
            "phase": "HF5SI4",
            "x": 0.4444444444444444
          },
          "mu_a_rel": -89921.59239701001,
          "mu_b_rel": -54939.7855025001,
          "right": {
            "phase": "HFSI2_C49",
            "x": 0.6666666666666666
          },
          "slope": 34981.806894509915,
          "x_hi": 0.6666666666666666,
          "x_lo": 0.4444444444444444
        },
        {
          "enthalpy": {
            "intercept": -209174.9993892389,
            "slope": 209174.9993892389
          },
          "entropy": {
            "intercept": -31.43999995716494,
            "slope": 31.43999995716494
          },
          "intercept": -199801.16340201016,
          "kind": "two_phase",
          "left": {
            "phase": "HFSI2_C49",
            "x": 0.6666666666666666
          },
          "mu_a_rel": -199801.16340201016,
          "mu_b_rel": 2.9103830456733704e-11,
          "right": {
            "phase": "DIAMOND_A4",
            "x": 1.0
          },
          "slope": 199801.1634020102,
          "x_hi": 1.0,
          "x_lo": 0.6666666666666666
        }
      ],
      "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": "HCP_A3",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.0
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -63325.46121384004,
          "energy_per_atom": -63325.46121384004,
          "enthalpy": -63784.99980232356,
          "entries_at_x": 1,
          "entropy": -1.5412999781436412,
          "formula": "",
          "nsites": null,
          "phase": "HF2SI_C16",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.3333333333333333
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -75928.35456720607,
          "energy_per_atom": -75928.35456720607,
          "enthalpy": -76771.99980114147,
          "entries_at_x": 1,
          "entropy": -2.8295999796592213,
          "formula": "",
          "nsites": null,
          "phase": "HF3SI2_D5A",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.4
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -74374.12266611672,
          "energy_per_atom": -74374.12266611672,
          "enthalpy": -74986.99980035337,
          "entries_at_x": 1,
          "entropy": -2.0555999806696406,
          "formula": "",
          "nsites": null,
          "phase": "HF5SI4",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.4444444444444444
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -66600.38780067007,
          "energy_per_atom": -66600.38780067007,
          "enthalpy": -69724.99979641297,
          "entries_at_x": 1,
          "entropy": -10.479999985721648,
          "formula": "",
          "nsites": null,
          "phase": "HFSI2_C49",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.6666666666666666
        },
        {
          "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": 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": "HfSi-00Zha-LB",
    "builder_version": 1,
    "engine": {
      "numpy": "2.5.1",
      "pycalphad": "0.11.2",
      "python": "3.13.15"
    },
    "fit_tol": 1.0,
    "observed_at": "2026-09-03T00:42:44Z",
    "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/HfSi-00Zha-LB.tdb",
    "source_sha256": "29edae6cd520ee5ecd21bc7319503170e0c06e87814f7ec0b538a116cdc2974a"
  },
  "reference": {
    "kind": "calphad_formation_T",
    "per": "mole_atoms",
    "temperature_K": 298.15,
    "units": "J/mol-atoms"
  },
  "schema_version": 1,
  "system_id": "HF-SI",
  "x_element": "SI"
}
