{
  "counts": {
    "above_hull": 0,
    "entries": 4,
    "intervals": 3,
    "vertices": 4
  },
  "elements": [
    "FE",
    "ZR"
  ],
  "flags": [
    "has_intermediate_phases"
  ],
  "isotherms": [
    {
      "element_reference": {
        "FE": {
          "energy": -8133.457581571668,
          "phase": "BCC_A2"
        },
        "ZR": {
          "energy": -11681.783822298501,
          "phase": "HCP_A3"
        }
      },
      "intervals": [
        {
          "enthalpy": {
            "intercept": 0.0,
            "slope": -87000.42894979159
          },
          "entropy": {
            "intercept": 0.0,
            "slope": 6.3599287045341875
          },
          "intercept": 0.0,
          "kind": "two_phase",
          "left": {
            "phase": "BCC_A2",
            "x": 0.0
          },
          "mu_a_rel": 0.0,
          "mu_b_rel": -88896.64169304847,
          "right": {
            "phase": "C15_LAVES",
            "x": 0.3333327695886209
          },
          "slope": -88896.64169304847,
          "x_hi": 0.3333327695886209,
          "x_lo": 0.0
        },
        {
          "enthalpy": {
            "intercept": -42760.02088380285,
            "slope": 41279.85065360496
          },
          "entropy": {
            "intercept": 3.3731846392973983,
            "slope": -3.7596423279219917
          },
          "intercept": -43765.73588400937,
          "kind": "two_phase",
          "left": {
            "phase": "C15_LAVES",
            "x": 0.3333327695886209
          },
          "mu_a_rel": -43765.73588400937,
          "mu_b_rel": -1364.947870334472,
          "right": {
            "phase": "FEZR3_E1A",
            "x": 0.7500000000006184
          },
          "slope": 42400.7880136749,
          "x_hi": 0.7500000000006184,
          "x_lo": 0.3333327695886209
        },
        {
          "enthalpy": {
            "intercept": -47200.53157441117,
            "slope": 47200.53157441117
          },
          "entropy": {
            "intercept": 2.2138115734197945,
            "slope": -2.2138115734197945
          },
          "intercept": -47860.579495026286,
          "kind": "two_phase",
          "left": {
            "phase": "FEZR3_E1A",
            "x": 0.7500000000006184
          },
          "mu_a_rel": -47860.579495026286,
          "mu_b_rel": 0.0,
          "right": {
            "phase": "HCP_A3",
            "x": 1.0
          },
          "slope": 47860.579495026286,
          "x_hi": 1.0,
          "x_lo": 0.7500000000006184
        }
      ],
      "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": "BCC_A2",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.0
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -29632.163782671116,
          "energy_per_atom": -29632.163782671116,
          "enthalpy": -29000.093937232064,
          "entries_at_x": 1,
          "entropy": 2.1199726494685507,
          "formula": "",
          "nsites": null,
          "phase": "C15_LAVES",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.3333327695886209
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -11965.144873726975,
          "energy_per_atom": -11965.144873726975,
          "enthalpy": -11800.132893573604,
          "entries_at_x": 1,
          "entropy": 0.5534528933535796,
          "formula": "",
          "nsites": null,
          "phase": "FEZR3_E1A",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.7500000000006184
        },
        {
          "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": "FeZr-20Laf",
    "builder_version": 1,
    "engine": {
      "numpy": "2.5.1",
      "pycalphad": "0.11.2",
      "python": "3.13.15"
    },
    "fit_tol": 1.0,
    "observed_at": "2026-09-03T00:38:19Z",
    "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/FeZr-20Laf.tdb",
    "source_sha256": "6a211aad300aad81630f6f92eda2639613220739af519323df337053fdd50cf2"
  },
  "reference": {
    "kind": "calphad_formation_T",
    "per": "mole_atoms",
    "temperature_K": 298.15,
    "units": "J/mol-atoms"
  },
  "schema_version": 1,
  "system_id": "FE-ZR",
  "x_element": "ZR"
}