{ "counts": { "above_hull": 0, "entries": 8, "intervals": 7, "vertices": 8 }, "elements": [ "AL", "IR" ], "flags": [ "has_intermediate_phases", "redundant_phase_descriptions" ], "isotherms": [ { "element_reference": { "AL": { "energy": -8437.64620620151, "phase": "FCC_4SL" }, "IR": { "energy": -10585.93471173741, "phase": "FCC_4SL" } }, "intervals": [ { "enthalpy": { "intercept": 0.0, "slope": -286907.4990104321 }, "entropy": { "intercept": 0.0, "slope": -36.668500905764354 }, "intercept": 0.0, "kind": "two_phase", "left": { "phase": "FCC_4SL#1", "x": 0.0 }, "mu_a_rel": 0.0, "mu_b_rel": -275974.78546537843, "right": { "phase": "AL9IR2", "x": 0.18181818181818182 }, "slope": -275974.78546537843, "x_hi": 0.18181818181818182, "x_lo": 0.0 }, { "enthalpy": { "intercept": -12346.92573519799, "slope": -218999.40746684317 }, "entropy": { "intercept": -7.25988905315637, "slope": 3.2608888865956853 }, "intercept": -10182.389813999405, "kind": "two_phase", "left": { "phase": "AL9IR2", "x": 0.18181818181818182 }, "mu_a_rel": -10182.389813999405, "mu_b_rel": -230154.03130238113, "right": { "phase": "AL45IR13", "x": 0.22413793103448276 }, "slope": -219971.64148838172, "x_hi": 0.22413793103448276, "x_lo": 0.18181818181818182 }, { "enthalpy": { "intercept": -20809.181627453792, "slope": -181244.72733216346 }, "entropy": { "intercept": -13.822000164267628, "slope": 32.537999997707445 }, "intercept": -16688.152278477188, "kind": "two_phase", "left": { "phase": "AL45IR13", "x": 0.22413793103448276 }, "mu_a_rel": -16688.152278477188, "mu_b_rel": -207634.084309958, "right": { "phase": "AL13IR4", "x": 0.23529411764705882 }, "slope": -190945.93203148083, "x_hi": 0.23529411764705882, "x_lo": 0.22413793103448276 }, { "enthalpy": { "intercept": -27774.999809271874, "slope": -151640.0000594366 }, "entropy": { "intercept": -17.46200016426737, "slope": 48.00799999770635 }, "intercept": -22568.704460295638, "kind": "two_phase", "left": { "phase": "AL13IR4", "x": 0.23529411764705882 }, "mu_a_rel": -22568.704460295638, "mu_b_rel": -188522.28971904807, "right": { "phase": "AL3IR_D018", "x": 0.25 }, "slope": -165953.58525875243, "x_hi": 0.25, "x_lo": 0.23529411764705882 }, { "enthalpy": { "intercept": -33630.666475939004, "slope": -128217.33339276808 }, "entropy": { "intercept": -8.444666830934166, "slope": 11.938666664373537 }, "intercept": -31112.8890602959, "kind": "two_phase", "left": { "phase": "AL3IR_D018", "x": 0.25 }, "mu_a_rel": -31112.8890602959, "mu_b_rel": -162889.73591904726, "right": { "phase": "AL5IR2", "x": 0.27027027027027023 }, "slope": -131776.84685875138, "x_hi": 0.27027027027027023, "x_lo": 0.25 }, { "enthalpy": { "intercept": -41608.11745634214, "slope": -98700.7647652765 }, "entropy": { "intercept": 1.1561174827899636, "slope": -23.584235296405748 }, "intercept": -41952.81388383599, "kind": "two_phase", "left": { "phase": "AL5IR2", "x": 0.27027027027027023 }, "mu_a_rel": -41952.81388383599, "mu_b_rel": -133621.93889548903, "right": { "phase": "ALIR_B2", "x": 0.5000000000000001 }, "slope": -91669.12501165303, "x_hi": 0.5000000000000001, "x_lo": 0.27027027027027023 }, { "enthalpy": { "intercept": -181916.99967796082, "slope": 181916.99967796082 }, "entropy": { "intercept": -21.27200033082583, "slope": 21.27200033082583 }, "intercept": -175574.75277932506, "kind": "two_phase", "left": { "phase": "ALIR_B2", "x": 0.5000000000000001 }, "mu_a_rel": -175574.75277932506, "mu_b_rel": 0.0, "right": { "phase": "FCC_4SL#2", "x": 1.0 }, "slope": 175574.75277932506, "x_hi": 1.0, "x_lo": 0.5000000000000001 } ], "phase_instances": { "FCC_4SL#1": "FCC_4SL", "FCC_4SL#2": "FCC_4SL" }, "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_4SL#1", "phase_kind": "solution", "spacegroup_number": null, "spacegroup_symbol": "", "theoretical": false, "x": 0.0 }, { "collinear": false, "degenerate": [], "energy": -50177.2337209779, "energy_per_atom": -50177.2337209779, "enthalpy": -52164.99982007857, "entries_at_x": 1, "entropy": -6.667000164684428, "formula": "", "nsites": null, "phase": "AL9IR2", "phase_kind": "solution", "spacegroup_number": null, "spacegroup_symbol": "", "theoretical": false, "x": 0.18181818181818182 }, { "collinear": false, "degenerate": [], "energy": -59486.37842346427, "energy_per_atom": -59486.37842346427, "enthalpy": -61432.999822593876, "entries_at_x": 1, "entropy": -6.5290001647814755, "formula": "", "nsites": null, "phase": "AL45IR13", "phase_kind": "solution", "spacegroup_number": null, "spacegroup_symbol": "", "theoretical": false, "x": 0.22413793103448276 }, { "collinear": false, "degenerate": [], "energy": -61616.60687411974, "energy_per_atom": -61616.60687411974, "enthalpy": -63454.999823256956, "entries_at_x": 1, "entropy": -6.166000164807052, "formula": "", "nsites": null, "phase": "AL13IR4", "phase_kind": "solution", "spacegroup_number": null, "spacegroup_symbol": "", "theoretical": false, "x": 0.23529411764705882 }, { "collinear": false, "degenerate": [], "energy": -64057.100774983744, "energy_per_atom": -64057.100774983744, "enthalpy": -65684.99982413102, "entries_at_x": 1, "entropy": -5.460000164840782, "formula": "", "nsites": null, "phase": "AL3IR_D018", "phase_kind": "solution", "spacegroup_number": null, "spacegroup_symbol": "", "theoretical": false, "x": 0.25 }, { "collinear": false, "degenerate": [], "energy": -66728.25307617465, "energy_per_atom": -66728.25307617465, "enthalpy": -68283.99982533578, "entries_at_x": 1, "entropy": -5.218000164887265, "formula": "", "nsites": null, "phase": "AL5IR2", "phase_kind": "solution", "spacegroup_number": null, "spacegroup_symbol": "", "theoretical": false, "x": 0.27027027027027023 }, { "collinear": false, "degenerate": [], "energy": -87787.37638966252, "energy_per_atom": -87787.37638966252, "enthalpy": -90958.4998389804, "entries_at_x": 1, "entropy": -10.636000165412913, "formula": "", "nsites": null, "phase": "ALIR_B2", "phase_kind": "solution", "spacegroup_number": null, "spacegroup_symbol": "", "theoretical": false, "x": 0.5000000000000001 }, { "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_4SL#2", "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": "AlIr-08Zha", "builder_version": 1, "engine": { "numpy": "2.5.1", "pycalphad": "0.11.2", "python": "3.13.15" }, "fit_tol": 1.0, "observed_at": "2026-09-03T00:10:59Z", "phase_families": { "FCC_A1": "A1_FCC" }, "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/AlIr-08Zha.tdb", "source_sha256": "c64bc19a38e734398eae114eabbb338a04cefa1b1e827347f32504c6afdbfaa7" }, "reference": { "kind": "calphad_formation_T", "per": "mole_atoms", "temperature_K": 298.15, "units": "J/mol-atoms" }, "schema_version": 1, "system_id": "AL-IR", "x_element": "IR" }