K
Traditional Materials TRAMP-ID: mp-998881 · Space group: Pm-3m (#221)
Basic Information
Formula
K
MP-ID
mp-998881
Elements
1
Sites
1
Density
0.8107
g/cm³
Volume
80.09
ų
Cell a
4.3105
Å
Cell b
4.3105
Å
Cell c
4.3104
Å
α Angle
90.00
°
β Angle
90.00
°
γ Angle
90.00
°
Space Group
Pm-3m
Point Group
m-3m
Crystal System
Cubic
Bravais Lattice
cP
Stability
No
Packing Fraction
0.5236
X-ray Diffraction
Diffraction Pattern
X-axis: 2θ (°); Y-axis: relative intensity; Cu Kα ; λ=1.5418 Å
Diffraction Peaks (Top 24)
| 2θ | d (Å) | I | hkl |
|---|---|---|---|
| 20.61 | 4.3105 | 100.0 | (1,0,0) |
| 20.61 | 4.3104 | 50.0 | (0,0,1) |
| 29.30 | 3.0480 | 39.6 | (1,1,0) |
| 29.30 | 3.0479 | 79.1 | (1,0,1) |
| 36.09 | 2.4886 | 42.8 | (1,1,1) |
| 41.92 | 2.1552 | 13.4 | (2,0,0) |
| 41.92 | 2.1552 | 6.7 | (0,0,2) |
| 47.15 | 1.9277 | 18.2 | (2,1,0) |
| 47.15 | 1.9277 | 18.2 | (2,0,1) |
| 47.15 | 1.9277 | 18.2 | (1,0,2) |
| 51.96 | 1.7597 | 26.3 | (2,1,1) |
| 51.96 | 1.7597 | 13.1 | (1,1,2) |
| 60.78 | 1.5240 | 3.9 | (2,2,0) |
| 60.78 | 1.5240 | 7.7 | (2,0,2) |
| 64.90 | 1.4368 | 3.1 | (3,0,0) |
| 64.90 | 1.4368 | 6.2 | (2,2,1) |
| 64.90 | 1.4368 | 12.4 | (2,1,2) |
| 64.90 | 1.4368 | 1.6 | (0,0,3) |
| 68.88 | 1.3631 | 5.1 | (3,1,0) |
| 68.88 | 1.3631 | 5.1 | (3,0,1) |
| 68.88 | 1.3631 | 5.1 | (1,0,3) |
| 72.77 | 1.2997 | 8.5 | (3,1,1) |
| 72.77 | 1.2996 | 4.3 | (1,1,3) |
| 76.57 | 1.2443 | 3.7 | (2,2,2) |
Energy Properties
Formation Energy/atom
0.11198
eV/atom
Energy/atom
-5.90629
eV/atom
Energy above Hull
0.1120
eV/atom
Uncorrected Energy
-5.9063
eV/atom
Volume/atom
80.09
ų
c/a Ratio
1.0000
Electronic Properties
Metallic
Metal
Band Gap
0
eV
Direct Gap
No
CBM
N/A
eV
Magnetic Properties
Magnetic
Yes
Total Mag. Moment
0.0000
μB
Mag. Ordering
Unknown
Mag. Sites
0
Magnetization/Volume
0.000000
μB/ų
Elastic Properties
Elastic data not available
Feature Analysis
Composition Overview
Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
K · 1.000
Element Family
N/A
Solute Fraction
0.000
Interstitial Fraction
0.000
Traditional Material Features
ROM Blended-Feature Radar
Rating & Classification
Tier
A
Score
0.498
Family
Pure Metal
Matrix Element
K · 1.000
Related Tasks
Citation & References
Materials Project Page
https://materialsproject.org/materials/mp-998881
Reference Citation
The crystal structure and related material properties of K were obtained from the Materials Project database (MP-ID: mp-998881, database version v2026.04.13).
Literature Citation
Horton, M.K., Huck, P., Yang, R.X. et al. Accelerated data-driven materials science with the Materials Project. Nat. Mater. 24, 1522–1532 (2025). https://doi.org/10.1038/s41563-025-02272-0
3D Crystal Structure Rendering
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Raw CIF Data
# generated using pymatgen
data_K
_symmetry_space_group_name_H-M 'P 1'
_cell_length_a 4.31044607
_cell_length_b 4.31044607
_cell_length_c 4.31042633
_cell_angle_alpha 90.00000000
_cell_angle_beta 90.00000000
_cell_angle_gamma 90.00000000
_symmetry_Int_Tables_number 1
_chemical_formula_structural K
_chemical_formula_sum K1
_cell_volume 80.08748553
_cell_formula_units_Z 1
loop_
_symmetry_equiv_pos_site_id
_symmetry_equiv_pos_as_xyz
1 'x, y, z'
loop_
_atom_site_type_symbol
_atom_site_label
_atom_site_symmetry_multiplicity
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
K K0 1 -0.00000000 0.00000000 -0.00000000 1.0
