Basic Information
Formula
RbSb
MP-ID
mp-1002227
Elements
2
Sites
2
Density
3.1393
g/cm³
Volume
109.61
ų
Cell a
5.3719
Å
Cell b
5.3719
Å
Cell c
5.3719
Å
α Angle
60.00
°
β Angle
60.00
°
γ Angle
60.00
°
Space Group
Fm-3m
Point Group
m-3m
Crystal System
Cubic
Bravais Lattice
cF
Stability
No
Packing Fraction
0.7405
X-ray Diffraction
Diffraction Pattern
X-axis: 2θ (°); Y-axis: relative intensity; Cu Kα ; λ=1.5418 Å
Diffraction Peaks (Top 14)
| 2θ | d (Å) | I | hkl |
|---|---|---|---|
| 20.25 | 4.3861 | 5.1 | (1,1,1) |
| 23.42 | 3.7985 | 100.0 | (1,1,0) |
| 33.36 | 2.6860 | 80.2 | (2,1,1) |
| 39.34 | 2.2906 | 2.8 | (2,2,1) |
| 41.16 | 2.1931 | 29.7 | (2,2,2) |
| 47.90 | 1.8993 | 14.2 | (2,2,0) |
| 52.51 | 1.7429 | 1.2 | (3,2,2) |
| 53.98 | 1.6987 | 39.6 | (3,2,1) |
| 59.62 | 1.5507 | 29.2 | (3,3,2) |
| 70.06 | 1.3430 | 9.0 | (4,2,2) |
| 75.01 | 1.2662 | 18.6 | (4,3,3) |
| 79.85 | 1.2012 | 12.6 | (4,3,1) |
| 84.62 | 1.1453 | 11.0 | (4,4,2) |
| 89.34 | 1.0965 | 3.3 | (4,4,4) |
Energy Properties
Formation Energy/atom
0.22621
eV/atom
Energy/atom
-2.32855
eV/atom
Energy above Hull
0.7414
eV/atom
Uncorrected Energy
-2.2326
eV/atom
Volume/atom
54.81
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
1.9989
μB
Mag. Ordering
FM
Mag. Sites
1
Magnetization/Volume
0.018240
μB/ų
Elastic Properties
KVRH
8.399
GPa
GVRH
2.582
GPa
Young's Modulus E
7.026
GPa
Poisson Ratio ν
0.361
Pugh Ratio K/G
3.253
Vickers Hardness Est.
0.000
GPa
Ductility
Brittle
Anisotropy
23.350
Lame λ
6.678
GPa
Feature Analysis
Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
Rb · 0.500
Element Family
Alkali-AlkEarth
Solute Fraction
0.500
Interstitial Fraction
0.000
Elastic Modulus Comparison (GPa)
Elastic Features
Elastic Anisotropy AU
23.3500
Homogeneous Poisson ν
0.3610
Debye Temperature
95.5
K
Sound Velocity
1,021.1
m/s
Homogeneity
0.3610
Related Tasks
Citation & References
Materials Project Page
https://materialsproject.org/materials/mp-1002227
Reference Citation
The crystal structure and related material properties of RbSb were obtained from the Materials Project database (MP-ID: mp-1002227, 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_RbSb
_symmetry_space_group_name_H-M 'P 1'
_cell_length_a 5.37189022
_cell_length_b 5.37189022
_cell_length_c 5.37189022
_cell_angle_alpha 60.00000000
_cell_angle_beta 60.00000000
_cell_angle_gamma 60.00000000
_symmetry_Int_Tables_number 1
_chemical_formula_structural RbSb
_chemical_formula_sum 'Rb1 Sb1'
_cell_volume 109.61409129
_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
Rb Rb0 1 0.00000000 0.00000000 0.00000000 1.0
Sb Sb1 1 0.50000000 0.50000000 0.50000000 1.0
