{
  "counts": {
    "above_hull": 0,
    "entries": 9,
    "intervals": 8,
    "vertices": 9
  },
  "elements": [
    "AL",
    "PR"
  ],
  "flags": [
    "has_intermediate_phases",
    "solution_phases"
  ],
  "isotherms": [
    {
      "element_reference": {
        "AL": {
          "energy": -8437.64795803584,
          "phase": "FCC_A1"
        },
        "PR": {
          "energy": -22042.618164159707,
          "phase": "DHCP"
        }
      },
      "intervals": [
        {
          "enthalpy": {
            "intercept": 0.0,
            "slope": -197480.65845560175
          },
          "entropy": {
            "intercept": 0.0,
            "slope": -40.08266753734584
          },
          "intercept": 0.0,
          "kind": "two_phase",
          "left": {
            "phase": "FCC_A1",
            "x": 0.0
          },
          "mu_a_rel": 0.0,
          "mu_b_rel": -185530.01112934208,
          "right": {
            "phase": "AL11PR3",
            "x": 0.21428571428571427
          },
          "slope": -185530.01112934208,
          "x_hi": 0.21428571428571427,
          "x_lo": 0.0
        },
        {
          "enthalpy": {
            "intercept": -11223.99802500612,
            "slope": -145102.0010055732
          },
          "entropy": {
            "intercept": 3.790999944508423,
            "slope": -57.774000611718485
          },
          "intercept": -12354.284658461282,
          "kind": "two_phase",
          "left": {
            "phase": "AL11PR3",
            "x": 0.21428571428571427
          },
          "mu_a_rel": -12354.284658461282,
          "mu_b_rel": -140230.9673816507,
          "right": {
            "phase": "AL3PR_D019",
            "x": 0.25
          },
          "slope": -127876.68272318943,
          "x_hi": 0.25,
          "x_lo": 0.21428571428571427
        },
        {
          "enthalpy": {
            "intercept": -25349.998025006153,
            "slope": -88598.00100557307
          },
          "entropy": {
            "intercept": -6.699000055491605,
            "slope": -15.814000611718374
          },
          "intercept": -23352.691158461308,
          "kind": "two_phase",
          "left": {
            "phase": "AL3PR_D019",
            "x": 0.25
          },
          "mu_a_rel": -23352.691158461308,
          "mu_b_rel": -107235.74788165063,
          "right": {
            "phase": "AL2PR_C15",
            "x": 0.3333333333333333
          },
          "slope": -83883.05672318932,
          "x_hi": 0.3333333333333333,
          "x_lo": 0.25
        },
        {
          "enthalpy": {
            "intercept": -76623.99802500613,
            "slope": 65223.9989944269
          },
          "entropy": {
            "intercept": -16.134000055491644,
            "slope": 12.490999388281741
          },
          "intercept": -71813.64590846132,
          "kind": "two_phase",
          "left": {
            "phase": "AL2PR_C15",
            "x": 0.3333333333333333
          },
          "mu_a_rel": -71813.64590846132,
          "mu_b_rel": -10313.838381650618,
          "right": {
            "phase": "ALPR",
            "x": 0.5
          },
          "slope": 61499.8075268107,
          "x_hi": 0.5,
          "x_lo": 0.3333333333333333
        },
        {
          "enthalpy": {
            "intercept": -75713.99802500615,
            "slope": 63403.998994426904
          },
          "entropy": {
            "intercept": -11.692000055491576,
            "slope": 3.6069993882816087
          },
          "intercept": -72228.02820846133,
          "kind": "two_phase",
          "left": {
            "phase": "ALPR",
            "x": 0.5
          },
          "mu_a_rel": -72228.02820846133,
          "mu_b_rel": -9899.456081650598,
          "right": {
            "phase": "ALPR2_C37",
            "x": 0.6666666666666666
          },
          "slope": 62328.57212681073,
          "x_hi": 0.6666666666666666,
          "x_lo": 0.5
        },
        {
          "enthalpy": {
            "intercept": -97463.99802500608,
            "slope": 96028.9989944268
          },
          "entropy": {
            "intercept": -28.886000055491724,
            "slope": 29.397999388281832
          },
          "intercept": -88851.63710846132,
          "kind": "two_phase",
          "left": {
            "phase": "ALPR2_C37",
            "x": 0.6666666666666666
          },
          "mu_a_rel": -88851.63710846132,
          "mu_b_rel": -1587.6516316506168,
          "right": {
            "phase": "ALPR3",
            "x": 0.75
          },
          "slope": 87263.9854768107,
          "x_hi": 0.75,
          "x_lo": 0.6666666666666666
        },
        {
          "enthalpy": {
            "intercept": -101882.40666779211,
            "slope": 101920.21051814151
          },
          "entropy": {
            "intercept": -27.936602454088085,
            "slope": 28.132135919743646
          },
          "intercept": -93553.10864610573,
          "kind": "two_phase",
          "left": {
            "phase": "ALPR3",
            "x": 0.75
          },
          "mu_a_rel": -93553.10864610573,
          "mu_b_rel": -20.494452435799758,
          "right": {
            "phase": "DHCP",
            "x": 0.9933233723228084
          },
          "slope": 93532.61419366993,
          "x_hi": 0.9933233723228084,
          "x_lo": 0.75
        },
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                -642.6794480612086,
                638.1146672329927,
                4.655899276910873,
                -0.09111844869494234
              ]
            ],
            "knots": [
              0.9933233723228084,
              1.0
            ],
            "max_abs_error": 0.01307174326049676
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                -0.32569153709677034,
                0.3234211989391563,
                0.0022085867173529117,
                6.175144026115964e-05
              ]
            ],
            "knots": [
              0.9933233723228084,
              1.0
            ],
            "max_abs_error": 8.889698251565714e-06
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              -545.5745162758067,
              541.6866367693283,
              3.9974091474794022,
              -0.10952964100101781
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.9933233723228084,
            1.0
          ],
          "max_abs_error": 0.015722206864325017,
          "phase": "DHCP",
          "x_hi": 1.0,
          "x_lo": 0.9933233723228084
        }
      ],
      "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": -39756.430956287586,
          "energy_per_atom": -39756.430956287586,
          "enthalpy": -42317.2839547718,
          "entries_at_x": 1,
          "entropy": -8.589143043716966,
          "formula": "",
          "nsites": null,
          "phase": "AL11PR3",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.21428571428571427
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -44323.45533925864,
          "energy_per_atom": -44323.45533925864,
          "enthalpy": -47499.49827639942,
          "entries_at_x": 1,
          "entropy": -10.652500208421198,
          "formula": "",
          "nsites": null,
          "phase": "AL3PR_D019",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.25
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -51313.71006619108,
          "energy_per_atom": -51313.71006619108,
          "enthalpy": -54882.66502686384,
          "entries_at_x": 1,
          "entropy": -11.970333592731063,
          "formula": "",
          "nsites": null,
          "phase": "AL2PR_C15",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.3333333333333333
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -41063.74214505596,
          "energy_per_atom": -41063.74214505596,
          "enthalpy": -44011.99852779269,
          "entries_at_x": 1,
          "entropy": -9.888500361350772,
          "formula": "",
          "nsites": null,
          "phase": "ALPR",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.5
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -30675.64679058751,
          "energy_per_atom": -30675.64679058751,
          "enthalpy": -33444.665362054875,
          "entries_at_x": 1,
          "entropy": -9.28733379663717,
          "formula": "",
          "nsites": null,
          "phase": "ALPR2_C37",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.6666666666666666
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -23403.64800085328,
          "energy_per_atom": -23403.64800085328,
          "enthalpy": -25442.24877918597,
          "entries_at_x": 1,
          "entropy": -6.83750051428035,
          "formula": "",
          "nsites": null,
          "phase": "ALPR3",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.75
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -644.976893081337,
          "energy_per_atom": -644.976893081337,
          "enthalpy": -642.6794480612086,
          "entries_at_x": 1,
          "entropy": 0.007705668355285411,
          "formula": "",
          "nsites": null,
          "phase": "DHCP",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.9933233723228084
        },
        {
          "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": "DHCP",
          "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": "AlPr-01Yin",
    "builder_version": 1,
    "engine": {
      "numpy": "2.5.1",
      "pycalphad": "0.11.2",
      "python": "3.13.15"
    },
    "fit_tol": 1.0,
    "observed_at": "2026-09-03T00:13:35Z",
    "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/AlPr-01Yin.tdb",
    "source_sha256": "0ae952d0952723dc004a97ffaca6fce3800da77313087a451a797099fb335fd9"
  },
  "reference": {
    "kind": "calphad_formation_T",
    "per": "mole_atoms",
    "temperature_K": 298.15,
    "units": "J/mol-atoms"
  },
  "schema_version": 1,
  "system_id": "AL-PR",
  "x_element": "PR"
}
