{
  "counts": {
    "above_hull": 0,
    "entries": 6,
    "intervals": 5,
    "vertices": 6
  },
  "elements": [
    "CU",
    "S"
  ],
  "flags": [
    "has_intermediate_phases"
  ],
  "isotherms": [
    {
      "element_reference": {
        "CU": {
          "energy": -9883.671591841832,
          "phase": "FCC_A1"
        },
        "S": {
          "energy": -9561.67074030289,
          "phase": "ORTHORHOMBIC_A16"
        }
      },
      "intervals": [
        {
          "enthalpy": {
            "intercept": 0.0,
            "slope": -70459.42236271338
          },
          "entropy": {
            "intercept": 0.0,
            "slope": 36.807266941296966
          },
          "intercept": 0.0,
          "kind": "two_phase",
          "left": {
            "phase": "FCC_A1",
            "x": 0.0
          },
          "mu_a_rel": 0.0,
          "mu_b_rel": -81433.50900126107,
          "right": {
            "phase": "CU2S_ALPHA",
            "x": 0.3333333333333333
          },
          "slope": -81433.50900126107,
          "x_hi": 0.3333333333333333,
          "x_lo": 0.0
        },
        {
          "enthalpy": {
            "intercept": -23229.360443200036,
            "slope": -771.3410331132663
          },
          "entropy": {
            "intercept": 28.033725619941865,
            "slope": -47.293909918528634
          },
          "intercept": -31587.61573678579,
          "kind": "two_phase",
          "left": {
            "phase": "CU2S_ALPHA",
            "x": 0.3333333333333333
          },
          "mu_a_rel": -31587.61573678579,
          "mu_b_rel": -18258.277527689497,
          "right": {
            "phase": "CU31S16",
            "x": 0.3412969283276451
          },
          "slope": 13329.338209096291,
          "x_hi": 0.3412969283276451,
          "x_lo": 0.3333333333333333
        },
        {
          "enthalpy": {
            "intercept": -7590.057416671971,
            "slope": -46594.498900840495
          },
          "entropy": {
            "intercept": 96.87161993496464,
            "slope": -248.98894026154537
          },
          "intercept": -36472.33090028155,
          "kind": "two_phase",
          "left": {
            "phase": "CU31S16",
            "x": 0.3412969283276451
          },
          "mu_a_rel": -36472.33090028155,
          "mu_b_rel": -8830.777262142688,
          "right": {
            "phase": "CU7S4",
            "x": 0.36363636363636365
          },
          "slope": 27641.553638138863,
          "x_hi": 0.36363636363636365,
          "x_lo": 0.3412969283276451
        },
        {
          "enthalpy": {
            "intercept": -39190.50008325976,
            "slope": 40306.71843227593
          },
          "entropy": {
            "intercept": -4.458226839154431,
            "slope": 29.66813836728209
          },
          "intercept": -37861.279751165894,
          "kind": "two_phase",
          "left": {
            "phase": "CU7S4",
            "x": 0.36363636363636365
          },
          "mu_a_rel": -37861.279751165894,
          "mu_b_rel": -6400.116773095073,
          "right": {
            "phase": "CUS_B18",
            "x": 0.5
          },
          "slope": 31461.16297807082,
          "x_hi": 0.5,
          "x_lo": 0.36363636363636365
        },
        {
          "enthalpy": {
            "intercept": -38074.281734243596,
            "slope": 38074.281734243596
          },
          "entropy": {
            "intercept": 20.751684688973228,
            "slope": -20.751684688973228
          },
          "intercept": -44261.39652426097,
          "kind": "two_phase",
          "left": {
            "phase": "CUS_B18",
            "x": 0.5
          },
          "mu_a_rel": -44261.39652426097,
          "mu_b_rel": 0.0,
          "right": {
            "phase": "ORTHORHOMBIC_A16",
            "x": 1.0
          },
          "slope": 44261.39652426097,
          "x_hi": 1.0,
          "x_lo": 0.5
        }
      ],
      "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": -27144.503000420358,
          "energy_per_atom": -27144.503000420358,
          "enthalpy": -23486.47412090446,
          "entries_at_x": 1,
          "entropy": 12.269088980432322,
          "formula": "",
          "nsites": null,
          "phase": "CU2S_ALPHA",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.3333333333333333
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -27038.35354938091,
          "energy_per_atom": -27038.35354938091,
          "enthalpy": -23492.616768494667,
          "entries_at_x": 1,
          "entropy": 11.892459436143696,
          "formula": "",
          "nsites": null,
          "phase": "CU31S16",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.3412969283276451
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -26420.856850049233,
          "energy_per_atom": -26420.856850049233,
          "enthalpy": -24533.51156243215,
          "entries_at_x": 1,
          "entropy": 6.330187112584511,
          "formula": "",
          "nsites": null,
          "phase": "CU7S4",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.36363636363636365
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -22130.698262130485,
          "energy_per_atom": -22130.698262130485,
          "enthalpy": -19037.140867121798,
          "entries_at_x": 1,
          "entropy": 10.375842344486614,
          "formula": "",
          "nsites": null,
          "phase": "CUS_B18",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.5
        },
        {
          "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": "ORTHORHOMBIC_A16",
          "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": "CuS-92Sun-newS",
    "builder_version": 1,
    "engine": {
      "numpy": "2.5.1",
      "pycalphad": "0.11.2",
      "python": "3.13.15"
    },
    "fit_tol": 1.0,
    "observed_at": "2026-09-03T00:31:35Z",
    "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/CuS-92Sun-newS.tdb",
    "source_sha256": "137242d5bf305aadb1a044623c566cbe19778f1612775076add29b4808d1b3ff"
  },
  "reference": {
    "kind": "calphad_formation_T",
    "per": "mole_atoms",
    "temperature_K": 298.15,
    "units": "J/mol-atoms"
  },
  "schema_version": 1,
  "system_id": "CU-S",
  "x_element": "S"
}
