{
  "counts": {
    "above_hull": 0,
    "entries": 8,
    "intervals": 7,
    "vertices": 8
  },
  "elements": [
    "CA",
    "SN"
  ],
  "flags": [
    "has_intermediate_phases"
  ],
  "isotherms": [
    {
      "element_reference": {
        "CA": {
          "energy": -12399.462172519628,
          "phase": "FCC_A1"
        },
        "SN": {
          "energy": -15259.304790750655,
          "phase": "BCT_A5"
        }
      },
      "intervals": [
        {
          "enthalpy": {
            "intercept": 0.0,
            "slope": -249357.89934910607
          },
          "entropy": {
            "intercept": 0.0,
            "slope": -64.73699987491071
          },
          "intercept": 0.0,
          "kind": "two_phase",
          "left": {
            "phase": "FCC_A1",
            "x": 0.0
          },
          "mu_a_rel": 0.0,
          "mu_b_rel": -230056.56283640143,
          "right": {
            "phase": "CA2SN_C37",
            "x": 0.3333333333333333
          },
          "slope": -230056.56283640143,
          "x_hi": 0.3333333333333333,
          "x_lo": 0.0
        },
        {
          "enthalpy": {
            "intercept": -55210.4997501062,
            "slope": -83726.40009878746
          },
          "entropy": {
            "intercept": -7.44139994473932,
            "slope": -42.41280004069274
          },
          "intercept": -52991.846356582,
          "kind": "two_phase",
          "left": {
            "phase": "CA2SN_C37",
            "x": 0.3333333333333333
          },
          "mu_a_rel": -52991.846356582,
          "mu_b_rel": -124072.87012323744,
          "right": {
            "phase": "CA5SN3_D8L",
            "x": 0.375
          },
          "slope": -71081.02376665545,
          "x_hi": 0.375,
          "x_lo": 0.3333333333333333
        },
        {
          "enthalpy": {
            "intercept": -107625.38546439099,
            "slope": 56046.62847263862
          },
          "entropy": {
            "intercept": -44.603899944739204,
            "slope": 56.68719995930695
          },
          "intercept": -94326.73269586757,
          "kind": "two_phase",
          "left": {
            "phase": "CA5SN3_D8L",
            "x": 0.375
          },
          "mu_a_rel": -94326.73269586757,
          "mu_b_rel": -55181.392891094794,
          "right": {
            "phase": "CA36SN23",
            "x": 0.3898305084745763
          },
          "slope": 39145.339804772775,
          "x_hi": 0.3898305084745763,
          "x_lo": 0.375
        },
        {
          "enthalpy": {
            "intercept": -134405.92832153657,
            "slope": 124744.54275835994
          },
          "entropy": {
            "intercept": -62.23668565902511,
            "slope": 101.919128530736
          },
          "intercept": -115850.06049229816,
          "kind": "two_phase",
          "left": {
            "phase": "CA36SN23",
            "x": 0.3898305084745763
          },
          "mu_a_rel": -115850.06049229816,
          "mu_b_rel": -21492.705905377356,
          "right": {
            "phase": "CA31SN20",
            "x": 0.39215686274509803
          },
          "slope": 94357.3545869208,
          "x_hi": 0.39215686274509803,
          "x_lo": 0.3898305084745763
        },
        {
          "enthalpy": {
            "intercept": -140908.3179319243,
            "slope": 141325.63626484867
          },
          "entropy": {
            "intercept": -60.45639994473929,
            "slope": 97.37939995930715
          },
          "intercept": -122883.24228840023,
          "kind": "two_phase",
          "left": {
            "phase": "CA31SN20",
            "x": 0.39215686274509803
          },
          "mu_a_rel": -122883.24228840023,
          "mu_b_rel": -10591.274121419163,
          "right": {
            "phase": "CASN_B33",
            "x": 0.5
          },
          "slope": 112291.96816698107,
          "x_hi": 0.5,
          "x_lo": 0.39215686274509803
        },
        {
          "enthalpy": {
            "intercept": -135291.49975010604,
            "slope": 130091.99990121211
          },
          "entropy": {
            "intercept": -32.82129994473924,
            "slope": 42.10919995930706
          },
          "intercept": -125505.82917158207,
          "kind": "two_phase",
          "left": {
            "phase": "CASN_B33",
            "x": 0.5
          },
          "mu_a_rel": -125505.82917158207,
          "mu_b_rel": -7968.687238237326,
          "right": {
            "phase": "CASN3_L12",
            "x": 0.75
          },
          "slope": 117537.14193334474,
          "x_hi": 0.75,
          "x_lo": 0.5
        },
        {
          "enthalpy": {
            "intercept": -150889.99929678784,
            "slope": 150889.99929678784
          },
          "entropy": {
            "intercept": -4.957599901035763,
            "slope": 4.957599901035763
          },
          "intercept": -149411.89088629404,
          "kind": "two_phase",
          "left": {
            "phase": "CASN3_L12",
            "x": 0.75
          },
          "mu_a_rel": -149411.89088629404,
          "mu_b_rel": 0.0,
          "right": {
            "phase": "BCT_A5",
            "x": 1.0
          },
          "slope": 149411.89088629404,
          "x_hi": 1.0,
          "x_lo": 0.75
        }
      ],
      "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": -76685.52094546714,
          "energy_per_atom": -76685.52094546714,
          "enthalpy": -83119.29978303536,
          "entries_at_x": 1,
          "entropy": -21.578999958303566,
          "formula": "",
          "nsites": null,
          "phase": "CA2SN_C37",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.3333333333333333
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -79647.23026907779,
          "energy_per_atom": -79647.23026907779,
          "enthalpy": -86607.8997871515,
          "entries_at_x": 1,
          "entropy": -23.346199959999097,
          "formula": "",
          "nsites": null,
          "phase": "CA5SN3_D8L",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.375
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -79066.68497536294,
          "energy_per_atom": -79066.68497536294,
          "enthalpy": -85776.6997886166,
          "entries_at_x": 1,
          "entropy": -22.505499960602595,
          "formula": "",
          "nsites": null,
          "phase": "CA36SN23",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.3898305084745763
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -78847.17634056452,
          "energy_per_atom": -78847.17634056452,
          "enthalpy": -85486.49978884641,
          "entries_at_x": 1,
          "entropy": -22.268399960697263,
          "formula": "",
          "nsites": null,
          "phase": "CA31SN20",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.39215686274509803
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -66737.2582049097,
          "energy_per_atom": -66737.2582049097,
          "enthalpy": -70245.49979949999,
          "entries_at_x": 1,
          "entropy": -11.766699965085706,
          "formula": "",
          "nsites": null,
          "phase": "CASN_B33",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.5
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -37352.97272157351,
          "energy_per_atom": -37352.97272157351,
          "enthalpy": -37722.49982419696,
          "entries_at_x": 1,
          "entropy": -1.2393999752589409,
          "formula": "",
          "nsites": null,
          "phase": "CASN3_L12",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.75
        },
        {
          "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": "BCT_A5",
          "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": "CaSn-05Car",
    "builder_version": 1,
    "engine": {
      "numpy": "2.5.1",
      "pycalphad": "0.11.2",
      "python": "3.13.15"
    },
    "fit_tol": 1.0,
    "observed_at": "2026-09-03T00:21:11Z",
    "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/CaSn-05Car.tdb",
    "source_sha256": "b3f8ddc2d6b985adb78e73b819fcd25377b5e2b40aadfc225e74bd106f7a404a"
  },
  "reference": {
    "kind": "calphad_formation_T",
    "per": "mole_atoms",
    "temperature_K": 298.15,
    "units": "J/mol-atoms"
  },
  "schema_version": 1,
  "system_id": "CA-SN",
  "x_element": "SN"
}
