Cr
传统材料 TRAMP-ID: mp-89 · Space group: P6_3/mmc (#194)
Basic Information
Formula
Cr
MP-ID
mp-89
Elements
1
Sites
2
Density
7.4512
g/cm³
Volume
23.18
ų
Cell a
2.4436
Å
Cell b
2.4436
Å
Cell c
4.4817
Å
α Angle
90.00
°
β Angle
90.00
°
γ Angle
120.00
°
Space Group
P6_3/mmc
Point Group
6/mmm
Crystal System
Hexagonal
Bravais Lattice
hP
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 11)
| 2θ | d (Å) | I | hkl |
|---|---|---|---|
| 40.25 | 2.2408 | 56.5 | (0,0,0,2) |
| 42.73 | 2.1162 | 35.2 | (1,0,-1,0) |
| 47.51 | 1.9136 | 100.0 | (1,0,-1,1) |
| 47.51 | 1.9136 | 50.0 | (1,-1,0,1) |
| 60.14 | 1.5386 | 15.1 | (1,0,-1,2) |
| 60.14 | 1.5386 | 7.6 | (1,-1,0,2) |
| 78.24 | 1.2218 | 6.4 | (1,1,-2,0) |
| 78.24 | 1.2218 | 12.9 | (2,-1,-1,0) |
| 78.35 | 1.2204 | 19.2 | (1,0,-1,3) |
| 78.35 | 1.2204 | 9.6 | (1,-1,0,3) |
| 86.95 | 1.1204 | 4.8 | (0,0,0,4) |
Energy Properties
Formation Energy/atom
0.42034
eV/atom
Energy/atom
-14.65300
eV/atom
Energy above Hull
0.4203
eV/atom
Uncorrected Energy
-9.2327
eV/atom
Volume/atom
11.59
ų
c/a Ratio
1.8340
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
Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
Cr · 1.000
Element Family
N/A
Solute Fraction
0.000
Interstitial Fraction
0.000
ROM Blended-Feature Radar
Rating & Classification
Tier
A
Score
0.583
Family
Pure Metal
Matrix Element
Cr · 1.000
Related Tasks
Citation & References
Materials Project Page
https://materialsproject.org/materials/mp-89
Reference Citation
The crystal structure and related material properties of Cr were obtained from the Materials Project database (MP-ID: mp-89, 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_Cr
_symmetry_space_group_name_H-M 'P 1'
_cell_length_a 2.44359144
_cell_length_b 2.44359147
_cell_length_c 4.48165159
_cell_angle_alpha 90.00000000
_cell_angle_beta 90.00000000
_cell_angle_gamma 119.99998657
_symmetry_Int_Tables_number 1
_chemical_formula_structural Cr
_chemical_formula_sum Cr2
_cell_volume 23.17533266
_cell_formula_units_Z 2
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
Cr Cr0 1 0.33333300 0.66666700 0.25000000 1.0
Cr Cr1 1 0.66666700 0.33333300 0.75000000 1.0
