EuC2
MP-ID: mp-1018177 · Space group: I4/mmm (#139)
Basic Information
Formula
EuC2
MP-ID
mp-1018177
Elements
2
Sites
3
Density
5.7511
g/cm³
Volume
50.81
ų
Cell a
3.9362
Å
Cell b
3.9362
Å
Cell c
4.3015
Å
α Angle
117.23
°
β Angle
117.23
°
γ Angle
90.00
°
Space Group
I4/mmm
Point Group
4/mmm
Crystal System
Tetragonal
Bravais Lattice
tI
Stability
Yes
Packing Fraction
-
X-ray Diffraction
Diffraction Pattern
X-axis: 2θ (°); Y-axis: relative intensity; Cu Kα ; λ=1.5418 Å
Diffraction Peaks (Top 19)
| 2θ | d (Å) | I | hkl |
|---|---|---|---|
| 26.41 | 3.3751 | 100.0 | (1,0,0) |
| 27.19 | 3.2797 | 34.1 | (0,0,1) |
| 32.16 | 2.7833 | 52.4 | (1,1,-1) |
| 42.60 | 2.1221 | 40.2 | (1,1,0) |
| 46.12 | 1.9681 | 18.4 | (2,0,-1) |
| 47.57 | 1.9114 | 28.3 | (1,0,1) |
| 53.93 | 1.7001 | 30.4 | (2,1,-1) |
| 54.37 | 1.6876 | 19.4 | (2,0,0) |
| 56.08 | 1.6398 | 3.4 | (0,0,2) |
| 66.14 | 1.4129 | 8.5 | (1,1,1) |
| 67.28 | 1.3916 | 5.8 | (2,2,-2) |
| 68.42 | 1.3712 | 19.0 | (2,1,0) |
| 73.63 | 1.2866 | 6.2 | (3,0,-1) |
| 73.99 | 1.2811 | 7.8 | (2,2,-1) |
| 75.46 | 1.2598 | 5.9 | (2,0,1) |
| 76.54 | 1.2447 | 8.0 | (3,1,-2) |
| 76.55 | 1.2446 | 8.0 | (1,0,2) |
| 82.98 | 1.1637 | 11.6 | (3,1,-1) |
| 86.51 | 1.1250 | 5.2 | (3,0,0) |
Energy Properties
Formation Energy/atom
-0.18159
eV/atom
Energy/atom
-19.65337
eV/atom
Energy above Hull
0.0000
eV/atom
Uncorrected Energy
-19.6534
eV/atom
Volume/atom
16.94
ų
c/a Ratio
1.0928
Electronic Properties
Metallic
Non-metal
Band Gap
0
eV
Direct Gap
No
CBM
N/A
eV
Magnetic Properties
Magnetic
No
Total Mag. Moment
0
μB
Mag. Ordering
NM
Mag. Sites
0
Magnetization/Volume
0
μB/ų
Elastic Properties
Elastic data not available
Feature Analysis
Element Composition (atomic fraction)
Composition Info
Related Tasks
Citation & References
Materials Project Page
https://materialsproject.org/materials/mp-1018177
Reference Citation
The crystal structure and related material properties of EuC2 were obtained from the Materials Project database (MP-ID: mp-1018177, 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_EuC2
_symmetry_space_group_name_H-M 'P 1'
_cell_length_a 3.93614815
_cell_length_b 3.93614815
_cell_length_c 4.30150257
_cell_angle_alpha 117.22795122
_cell_angle_beta 117.22795122
_cell_angle_gamma 90.00000000
_symmetry_Int_Tables_number 1
_chemical_formula_structural EuC2
_chemical_formula_sum 'Eu1 C2'
_cell_volume 50.81292439
_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
Eu Eu0 1 0.00000000 0.00000000 0.00000000 1.0
C C1 1 0.59647167 0.59647167 0.19294333 1.0
C C2 1 0.40352833 0.40352833 0.80705667 1.0
