{
  "counts": {
    "above_hull": 0,
    "entries": 7,
    "intervals": 6,
    "vertices": 7
  },
  "elements": [
    "CU",
    "DY"
  ],
  "flags": [
    "has_intermediate_phases",
    "solution_phases"
  ],
  "isotherms": [
    {
      "element_reference": {
        "CU": {
          "energy": -9883.671622525979,
          "phase": "FCC_A1"
        },
        "DY": {
          "energy": -22540.55487226508,
          "phase": "HCP_A3"
        }
      },
      "intervals": [
        {
          "enthalpy": {
            "intercept": 0.0,
            "slope": -99486.20404583974
          },
          "entropy": {
            "intercept": 0.0,
            "slope": -1.0463741694681232
          },
          "intercept": 0.0,
          "kind": "two_phase",
          "left": {
            "phase": "FCC_A1",
            "x": 0.0
          },
          "mu_a_rel": 0.0,
          "mu_b_rel": -99174.2275872128,
          "right": {
            "phase": "CU5DY_C15B",
            "x": 0.16666666666666666
          },
          "slope": -99174.2275872128,
          "x_hi": 0.16666666666666666,
          "x_lo": 0.0
        },
        {
          "enthalpy": {
            "intercept": -5235.68800037288,
            "slope": -68072.07604360246
          },
          "entropy": {
            "intercept": -1.30000004125086,
            "slope": 6.753626078037038
          },
          "intercept": -4848.092988073875,
          "kind": "two_phase",
          "left": {
            "phase": "CU5DY_C15B",
            "x": 0.16666666666666666
          },
          "mu_a_rel": -4848.092988073875,
          "mu_b_rel": -74933.76264684342,
          "right": {
            "phase": "CU9DY2",
            "x": 0.18181818181818182
          },
          "slope": -70085.66965876955,
          "x_hi": 0.18181818181818182,
          "x_lo": 0.16666666666666666
        },
        {
          "enthalpy": {
            "intercept": -9478.900840372831,
            "slope": -44734.40542360272
          },
          "entropy": {
            "intercept": 0.8934799587492495,
            "slope": -5.310513921963564
          },
          "intercept": -9745.291890073935,
          "kind": "two_phase",
          "left": {
            "phase": "CU9DY2",
            "x": 0.18181818181818182
          },
          "mu_a_rel": -9745.291890073935,
          "mu_b_rel": -52896.36758784315,
          "right": {
            "phase": "CU2DY",
            "x": 0.3333333333333333
          },
          "slope": -43151.07569776922,
          "x_hi": 0.3333333333333333,
          "x_lo": 0.18181818181818182
        },
        {
          "enthalpy": {
            "intercept": -21406.661900372852,
            "slope": -8951.122243602656
          },
          "entropy": {
            "intercept": -1.7143000412507658,
            "slope": 2.512826078036482
          },
          "intercept": -20895.543343073914,
          "kind": "two_phase",
          "left": {
            "phase": "CU2DY",
            "x": 0.3333333333333333
          },
          "mu_a_rel": -20895.543343073914,
          "mu_b_rel": -30595.864681843195,
          "right": {
            "phase": "CUDY_B2",
            "x": 0.5
          },
          "slope": -9700.32133876928,
          "x_hi": 0.5,
          "x_lo": 0.3333333333333333
        },
        {
          "enthalpy": {
            "intercept": -51868.931469712625,
            "slope": 51973.416895076894
          },
          "entropy": {
            "intercept": -1.3231195986399373,
            "slope": 1.7304651928148251
          },
          "intercept": -51474.44336137814,
          "kind": "two_phase",
          "left": {
            "phase": "CUDY_B2",
            "x": 0.5
          },
          "mu_a_rel": -51474.44336137814,
          "mu_b_rel": -16.964663538972673,
          "right": {
            "phase": "HCP_A3",
            "x": 0.9937959765638638
          },
          "slope": 51457.478697839164,
          "x_hi": 0.9937959765638638,
          "x_lo": 0.5
        },
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                -217.95887110886954,
                216.59237043925674,
                1.3700186505240879,
                -0.003517980911254881
              ]
            ],
            "knots": [
              0.9937959765638638,
              1.0
            ],
            "max_abs_error": 0.0004759883784828389
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                0.08301280436715186,
                -0.08244010710724313,
                -0.0005855367623232438,
                1.283950241451337e-05
              ]
            ],
            "knots": [
              0.9937959765638638,
              1.0
            ],
            "max_abs_error": 1.947917042562086e-06
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              -242.70913873093156,
              241.17188837261833,
              1.544596438047023,
              -0.007346079733736133
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.9937959765638638,
            1.0
          ],
          "max_abs_error": 0.001056759865051049,
          "phase": "HCP_A3",
          "x_hi": 1.0,
          "x_lo": 0.9937959765638638
        }
      ],
      "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": -16529.037931202132,
          "energy_per_atom": -16529.037931202132,
          "enthalpy": -16581.034007639955,
          "entries_at_x": 1,
          "entropy": -0.17439569491135387,
          "formula": "",
          "nsites": null,
          "phase": "CU5DY_C15B",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.16666666666666666
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -17590.942016941066,
          "energy_per_atom": -17590.942016941066,
          "enthalpy": -17612.42909920969,
          "entries_at_x": 1,
          "entropy": -0.07206802706230775,
          "formula": "",
          "nsites": null,
          "phase": "CU9DY2",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.18181818181818182
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -24128.98378933034,
          "energy_per_atom": -24128.98378933034,
          "enthalpy": -24390.36931490707,
          "entries_at_x": 1,
          "entropy": -0.8766913485719385,
          "formula": "",
          "nsites": null,
          "phase": "CU2DY",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.3333333333333333
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -25745.704012458555,
          "energy_per_atom": -25745.704012458555,
          "enthalpy": -25882.22302217418,
          "entries_at_x": 1,
          "entropy": -0.45788700223252476,
          "formula": "",
          "nsites": null,
          "phase": "CUDY_B2",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.5
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -336.2080673448472,
          "energy_per_atom": -336.2080673448472,
          "enthalpy": -217.95887110886954,
          "entries_at_x": 1,
          "entropy": 0.39660974756324663,
          "formula": "",
          "nsites": null,
          "phase": "HCP_A3",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.9937959765638638
        },
        {
          "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": 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": "CuDy-09Zha",
    "builder_version": 1,
    "engine": {
      "numpy": "2.5.1",
      "pycalphad": "0.11.2",
      "python": "3.13.15"
    },
    "fit_tol": 1.0,
    "observed_at": "2026-09-03T00:30:16Z",
    "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/CuDy-09Zha.tdb",
    "source_sha256": "6c6f9d652328ae39e78168af5c1d977a941f960619e30791dd2d5145706d0513"
  },
  "reference": {
    "kind": "calphad_formation_T",
    "per": "mole_atoms",
    "temperature_K": 298.15,
    "units": "J/mol-atoms"
  },
  "schema_version": 1,
  "system_id": "CU-DY",
  "x_element": "DY"
}
