{
  "counts": {
    "above_hull": 0,
    "entries": 8,
    "intervals": 7,
    "vertices": 8
  },
  "elements": [
    "AG",
    "SN"
  ],
  "flags": [
    "has_intermediate_phases",
    "solution_phases"
  ],
  "isotherms": [
    {
      "element_reference": {
        "AG": {
          "energy": -12686.282507093309,
          "phase": "FCC_A1"
        },
        "SN": {
          "energy": -15259.304672723347,
          "phase": "BCT_A5"
        }
      },
      "intervals": [
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                0.0,
                -2128.6679355589904,
                537.8317879817307,
                -25.348246282170976
              ]
            ],
            "knots": [
              0.0,
              0.07028593130830432
            ],
            "max_abs_error": 0.001553174918115019
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                0.0,
                -0.21352608018399438,
                0.05681383385876268,
                -7.444035644149638e-06
              ]
            ],
            "knots": [
              0.0,
              0.07028593130830432
            ],
            "max_abs_error": 1.3890553338252731e-06
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              0.0,
              -2065.0051347523467,
              520.8927434172228,
              -25.346026843208165
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.0,
            0.07028593130830432
          ],
          "max_abs_error": 0.0019481108745935671,
          "phase": "FCC_A1",
          "x_hi": 0.07028593130830432,
          "x_lo": 0.0
        },
        {
          "enthalpy": {
            "intercept": -190.95561326840038,
            "slope": -20277.582640818455
          },
          "entropy": {
            "intercept": 1.5424938608700596,
            "slope": 5.915867863253364
          },
          "intercept": -650.8501578867908,
          "kind": "two_phase",
          "left": {
            "phase": "FCC_A1",
            "x": 0.07028593130830432
          },
          "mu_a_rel": -650.8501578867908,
          "mu_b_rel": -22692.24880213444,
          "right": {
            "phase": "HCP_A3",
            "x": 0.08866449890943834
          },
          "slope": -22041.39864424765,
          "x_hi": 0.08866449890943834,
          "x_lo": 0.07028593130830432
        },
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                -1988.857317211294,
                -920.8917794653489,
                311.61886899027786,
                -14.31021916425243
              ]
            ],
            "knots": [
              0.08866449890943834,
              0.14479265429126603
            ],
            "max_abs_error": 0.0007414072774736269
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                -0.4226366183276915,
                -0.026691964611350982,
                0.03225115947643328,
                -7.920670262728802e-07
              ]
            ],
            "knots": [
              0.08866449890943834,
              0.14479265429126603
            ],
            "max_abs_error": 1.2847117841774391e-07
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              -1862.848209456893,
              -912.9335702162609,
              302.0031857916244,
              -14.309983008927418
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.08866449890943834,
            0.14479265429126603
          ],
          "max_abs_error": 0.0007760210373817245,
          "phase": "HCP_A3",
          "x_hi": 0.14479265429126603,
          "x_lo": 0.08866449890943834
        },
        {
          "enthalpy": {
            "intercept": -942.909216148089,
            "slope": -11530.496756721417
          },
          "entropy": {
            "intercept": 3.4386033747784466,
            "slope": -2.8805134563865633
          },
          "intercept": -1968.1288123382792,
          "kind": "two_phase",
          "left": {
            "phase": "HCP_A3",
            "x": 0.14479265429126603
          },
          "mu_a_rel": -1968.1288123382792,
          "mu_b_rel": -12639.800482038063,
          "right": {
            "phase": "AG3SN_D0A",
            "x": 0.24999672728267508
          },
          "slope": -10671.671669699783,
          "x_hi": 0.24999672728267508,
          "x_lo": 0.14479265429126603
        },
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                -3825.4956692719425,
                -0.11540603576341589,
                -4.971218992011472e-10,
                3.1704194825010745e-10
              ]
            ],
            "knots": [
              0.24999672728267508,
              0.24999999634905692
            ],
            "max_abs_error": 2.4556356947869062e-11
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                -1.957000206567713,
                -0.0002999232522744019,
                6.811700425503694e-05,
                -9.50934856641836e-05
              ]
            ],
            "knots": [
              0.24999672728267508,
              0.24999999634905692
            ],
            "max_abs_error": 1.0373192026458256e-05
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              -3242.0160576837807,
              -0.025983918034171008,
              -0.020309085081084907,
              0.028352122766723317
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.24999672728267508,
            0.24999999634905692
          ],
          "max_abs_error": 0.003092767150064901,
          "phase": "AG3SN_D0A",
          "x_hi": 0.24999999634905692,
          "x_lo": 0.24999672728267508
        },
        {
          "enthalpy": {
            "intercept": -5100.900297443974,
            "slope": 5101.156963040486
          },
          "entropy": {
            "intercept": 3.623937193292389,
            "slope": -3.622999229453358
          },
          "intercept": -6181.377171624104,
          "kind": "two_phase",
          "left": {
            "phase": "AG3SN_D0A",
            "x": 0.24999999634905692
          },
          "mu_a_rel": -6181.377171624104,
          "mu_b_rel": -0.02298832209635293,
          "right": {
            "phase": "BCT_A5",
            "x": 0.9999907144699434
          },
          "slope": 6181.354183302008,
          "x_hi": 0.9999907144699434,
          "x_lo": 0.24999999634905692
        },
        {
          "enthalpy": {
            "entropy_form": null,
            "hermite": [
              [
                0.20929865020807584,
                -0.20931960961773496,
                -0.0020881893089671477,
                0.002109148718626247
              ]
            ],
            "knots": [
              0.9999907144699434,
              1.0
            ],
            "max_abs_error": 0.00030253517886973114
          },
          "entropy": {
            "entropy_form": {
              "R": 8.31446261815324,
              "kind": "ideal_mixing_entropy"
            },
            "hermite": [
              [
                -1.6761909578063595e-07,
                -4.021573691382239e-09,
                -1.5918500668571616e-05,
                1.6090141338043635e-05
              ]
            ],
            "knots": [
              0.9999907144699434,
              1.0
            ],
            "max_abs_error": 2.3080054526453854e-06
          },
          "entropy_form": {
            "RT": 2478.957029602388,
            "kind": "ideal_mixing"
          },
          "hermite": [
            [
              0.20934862584000313,
              -0.2093184106858514,
              0.0026579114926836567,
              -0.002688126646835376
            ]
          ],
          "kind": "single_phase",
          "knots": [
            0.9999907144699434,
            1.0
          ],
          "max_abs_error": 0.00038559658371681294,
          "phase": "BCT_A5",
          "x_hi": 1.0,
          "x_lo": 0.9999907144699434
        }
      ],
      "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": -2200.050388935333,
          "energy_per_atom": -2200.050388935333,
          "enthalpy": -1616.1843938594304,
          "entries_at_x": 1,
          "entropy": 1.9582961431356907,
          "formula": "",
          "nsites": null,
          "phase": "FCC_A1",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.07028593130830432
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -2605.139723942182,
          "energy_per_atom": -2605.139723942182,
          "enthalpy": -1988.857317211294,
          "entries_at_x": 1,
          "entropy": 2.067021320579869,
          "formula": "",
          "nsites": null,
          "phase": "HCP_A3",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.08866449890943834
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -3513.3084791190176,
          "energy_per_atom": -3513.3084791190176,
          "enthalpy": -2612.4404468506173,
          "entries_at_x": 1,
          "entropy": 3.021526185706527,
          "formula": "",
          "nsites": null,
          "phase": "HCP_A3",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.14479265429126603
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -4636.011804398466,
          "energy_per_atom": -4636.011804398466,
          "enthalpy": -3825.4956692719425,
          "entries_at_x": 1,
          "entropy": 2.7184844377880992,
          "formula": "",
          "nsites": null,
          "phase": "AG3SN_D0A",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.24999672728267508
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -4636.038648366375,
          "energy_per_atom": -4636.038648366375,
          "enthalpy": -3825.611075307886,
          "entries_at_x": 1,
          "entropy": 2.718187399156413,
          "formula": "",
          "nsites": null,
          "phase": "AG3SN_D0A",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.24999999634905692
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.08038547215619474,
          "energy_per_atom": -0.08038547215619474,
          "enthalpy": 0.20929865020807584,
          "entries_at_x": 1,
          "entropy": 0.0009716053072708064,
          "formula": "",
          "nsites": null,
          "phase": "BCT_A5",
          "phase_kind": "solution",
          "spacegroup_number": null,
          "spacegroup_symbol": "",
          "theoretical": false,
          "x": 0.9999907144699434
        },
        {
          "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": "AgSn-12Din",
    "builder_version": 1,
    "engine": {
      "numpy": "2.5.1",
      "pycalphad": "0.11.2",
      "python": "3.13.15"
    },
    "fit_tol": 1.0,
    "observed_at": "2026-09-03T00:00:56Z",
    "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/AgSn-12Din.tdb",
    "source_sha256": "afbd909e0f44b9285d228310da665af66ae83f637c45b6f0fd7e7b06f12fb0e5"
  },
  "reference": {
    "kind": "calphad_formation_T",
    "per": "mole_atoms",
    "temperature_K": 298.15,
    "units": "J/mol-atoms"
  },
  "schema_version": 1,
  "system_id": "AG-SN",
  "x_element": "SN"
}