{
  "counts": {
    "above_hull": 13,
    "entries": 42,
    "intervals": 5,
    "vertices": 6
  },
  "elements": [
    "K",
    "SB"
  ],
  "flags": [
    "has_intermediate_compounds",
    "theoretical_vertices"
  ],
  "isotherms": [
    {
      "intervals": [
        {
          "intercept": 0.0,
          "kind": "two_phase",
          "left": {
            "phase": "mp-aaacpkvh",
            "x": 0.0
          },
          "mu_a_rel": 0.0,
          "mu_b_rel": -1.8045242640000012,
          "right": {
            "phase": "mp-aaaaautd",
            "x": 0.25
          },
          "slope": -1.8045242640000012,
          "x_hi": 0.25,
          "x_lo": 0.0
        },
        {
          "intercept": -0.3689366387142862,
          "kind": "two_phase",
          "left": {
            "phase": "mp-aaaaautd",
            "x": 0.25
          },
          "mu_a_rel": -0.3689366387142862,
          "mu_b_rel": -0.6977143478571425,
          "right": {
            "phase": "mp-aaaabskr",
            "x": 0.4444444444444444
          },
          "slope": -0.32877770914285626,
          "x_hi": 0.4444444444444444,
          "x_lo": 0.25
        },
        {
          "intercept": -0.4192631680000006,
          "kind": "two_phase",
          "left": {
            "phase": "mp-aaaabskr",
            "x": 0.4444444444444444
          },
          "mu_a_rel": -0.4192631680000006,
          "mu_b_rel": -0.6348061862499996,
          "right": {
            "phase": "mp-aaaaachc",
            "x": 0.5
          },
          "slope": -0.21554301824999902,
          "x_hi": 0.5,
          "x_lo": 0.4444444444444444
        },
        {
          "intercept": -0.826109240500001,
          "kind": "two_phase",
          "left": {
            "phase": "mp-aaaaachc",
            "x": 0.5
          },
          "mu_a_rel": -0.826109240500001,
          "mu_b_rel": -0.22796011374999914,
          "right": {
            "phase": "mp-aaaabqzn",
            "x": 0.6666666666666666
          },
          "slope": 0.5981491267500019,
          "x_hi": 0.6666666666666666,
          "x_lo": 0.5
        },
        {
          "intercept": -1.2820294679999993,
          "kind": "two_phase",
          "left": {
            "phase": "mp-aaaabqzn",
            "x": 0.6666666666666666
          },
          "mu_a_rel": -1.2820294679999993,
          "mu_b_rel": 0.0,
          "right": {
            "phase": "mp-aaaaaaea",
            "x": 1.0
          },
          "slope": 1.2820294679999993,
          "x_hi": 1.0,
          "x_lo": 0.6666666666666666
        }
      ],
      "temperature_K": 0.0,
      "vertices": [
        {
          "collinear": false,
          "degenerate": [],
          "energy": 0.0,
          "energy_per_atom": -1.110398947,
          "entries_at_x": 20,
          "formula": "K",
          "nsites": 20,
          "phase": "mp-aaacpkvh",
          "phase_kind": "structure",
          "spacegroup_number": 213,
          "spacegroup_symbol": "P4_132",
          "theoretical": true,
          "x": 0.0
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.4511310660000003,
          "energy_per_atom": -2.3161805862500002,
          "entries_at_x": 2,
          "formula": "K3Sb",
          "nsites": 8,
          "phase": "mp-aaaaautd",
          "phase_kind": "structure",
          "spacegroup_number": 194,
          "spacegroup_symbol": "P6_3/mmc",
          "theoretical": false,
          "x": 0.25
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.5150600650000001,
          "energy_per_atom": -2.9670600311111115,
          "entries_at_x": 3,
          "formula": "K5Sb4",
          "nsites": 9,
          "phase": "mp-aaaabskr",
          "phase_kind": "structure",
          "spacegroup_number": 12,
          "spacegroup_symbol": "C2/m",
          "theoretical": true,
          "x": 0.4444444444444444
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.5270346771250001,
          "energy_per_atom": -3.146734770625,
          "entries_at_x": 1,
          "formula": "KSb",
          "nsites": 16,
          "phase": "mp-aaaaachc",
          "phase_kind": "structure",
          "spacegroup_number": 14,
          "spacegroup_symbol": "P2_1/c",
          "theoretical": false,
          "x": 0.5
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": -0.4273431559999998,
          "energy_per_atom": -3.5501436316666664,
          "entries_at_x": 1,
          "formula": "KSb2",
          "nsites": 6,
          "phase": "mp-aaaabqzn",
          "phase_kind": "structure",
          "spacegroup_number": 12,
          "spacegroup_symbol": "C2/m",
          "theoretical": false,
          "x": 0.6666666666666666
        },
        {
          "collinear": false,
          "degenerate": [],
          "energy": 0.0,
          "energy_per_atom": -4.12900124,
          "entries_at_x": 14,
          "formula": "Sb",
          "nsites": 2,
          "phase": "mp-aaaaaaea",
          "phase_kind": "structure",
          "spacegroup_number": 166,
          "spacegroup_symbol": "R-3m",
          "theoretical": false,
          "x": 1.0
        }
      ]
    }
  ],
  "mp_agreement": {
    "comparable": true,
    "comparable_note": "",
    "max_abs_delta_energy_above_hull": 4.440892098500626e-16,
    "only_mp_stable": [],
    "only_ours_stable": [],
    "stable_sets_match": true
  },
  "provenance": {
    "above_hull_window_eV": 0.05,
    "builder_version": 1,
    "collinear_tol": 1e-12,
    "correction_model": "MP2020 (applied upstream by the Materials Project; none added)",
    "degenerate_tol": 1e-06,
    "entry_pool": "all_nondeprecated",
    "is_stable_source": "upstream_flag",
    "observed_at": "2026-09-01T20:54:47Z",
    "snapshot_scope_elements": [],
    "snapshot_scope_kind": "full",
    "snapshot_sha256": "b6deba8ecf1b67211b3d89cd33a5f98a1939d4bcd92db561818195e55187492a",
    "source_release": "2026.04.13",
    "stability_tol": 0.0001,
    "thermo_type": "GGA_GGA+U",
    "upstream_energy_corrections": "MP2020 compatibility corrections (anion and GGA/GGA+U mixing corrections), applied by the Materials Project to its GGA_GGA+U thermo energies"
  },
  "reference": {
    "kind": "dft_elemental_ground_state_0K",
    "per": "atom",
    "temperature_K": 0.0,
    "units": "eV/atom"
  },
  "schema_version": 1,
  "system_id": "K-SB",
  "x_element": "SB"
}