La3Eu
Traditional Materials TRAMP-ID: mp-1185528 · Space group: P6_3/mmc (#194)
Basic Information
Formula
La3Eu
MP-ID
mp-1185528
Elements
2
Sites
8
Density
6.3906
g/cm³
Volume
295.53
ų
Cell a
7.5561
Å
Cell b
7.5561
Å
Cell c
5.9769
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 24)
| 2θ | d (Å) | I | hkl |
|---|---|---|---|
| 27.26 | 3.2719 | 23.5 | (2,0,-2,0) |
| 29.90 | 2.9885 | 24.8 | (0,0,0,2) |
| 31.16 | 2.8700 | 100.0 | (2,0,-2,1) |
| 40.90 | 2.2066 | 15.9 | (2,0,-2,2) |
| 48.17 | 1.8890 | 19.7 | (4,-2,-2,0) |
| 53.88 | 1.7017 | 14.2 | (2,0,-2,3) |
| 53.88 | 1.7017 | 7.1 | (2,-2,0,3) |
| 56.23 | 1.6360 | 3.1 | (4,0,-4,0) |
| 57.74 | 1.5968 | 22.9 | (4,-2,-2,2) |
| 58.49 | 1.5779 | 11.0 | (4,0,-4,1) |
| 58.49 | 1.5779 | 5.5 | (4,-4,0,1) |
| 62.12 | 1.4942 | 3.1 | (0,0,0,4) |
| 64.99 | 1.4350 | 4.0 | (4,0,-4,2) |
| 69.11 | 1.3592 | 3.3 | (2,0,-2,4) |
| 75.14 | 1.2643 | 5.2 | (4,0,-4,3) |
| 75.14 | 1.2643 | 2.6 | (4,-4,0,3) |
| 77.13 | 1.2367 | 2.4 | (6,-2,-4,0) |
| 79.08 | 1.2110 | 13.6 | (6,-2,-4,1) |
| 82.27 | 1.1719 | 8.3 | (4,-2,-2,4) |
| 84.85 | 1.1427 | 3.9 | (6,-2,-4,2) |
| 86.72 | 1.1228 | 5.6 | (2,0,-2,5) |
| 88.65 | 1.1033 | 1.8 | (4,0,-4,4) |
| 89.96 | 1.0906 | 2.3 | (6,0,-6,0) |
| 89.96 | 1.0906 | 1.1 | (6,-6,0,0) |
Energy Properties
Formation Energy/atom
0.07660
eV/atom
Energy/atom
-31.86220
eV/atom
Energy above Hull
0.0766
eV/atom
Uncorrected Energy
-6.1897
eV/atom
Volume/atom
36.94
ų
c/a Ratio
0.7910
Electronic Properties
Metallic
Metal
Band Gap
0
eV
Direct Gap
No
CBM
N/A
eV
Magnetic Properties
Magnetic
Yes
Total Mag. Moment
14.1193
μB
Mag. Ordering
FM
Mag. Sites
2
Magnetization/Volume
0.047780
μB/ų
Elastic Properties
Elastic data not available
Feature Analysis
Composition Overview
Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
La · 0.750
Element Family
N/A
Solute Fraction
0.250
Interstitial Fraction
0.000
Traditional Material Features
ROM Blended-Feature Radar
Rating & Classification
Tier
A
Score
0.590
Family
Binary Alloy
Matrix Element
La · 0.750
Related Tasks
Citation & References
Materials Project Page
https://materialsproject.org/materials/mp-1185528
Reference Citation
The crystal structure and related material properties of La3Eu were obtained from the Materials Project database (MP-ID: mp-1185528, 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_La3Eu
_symmetry_space_group_name_H-M 'P 1'
_cell_length_a 7.55612371
_cell_length_b 7.55612371
_cell_length_c 5.97690400
_cell_angle_alpha 90.00000000
_cell_angle_beta 90.00000000
_cell_angle_gamma 119.99999744
_symmetry_Int_Tables_number 1
_chemical_formula_structural La3Eu
_chemical_formula_sum 'La6 Eu2'
_cell_volume 295.53236021
_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
La La0 1 0.16373000 0.32746000 0.25000000 1.0
La La1 1 0.67254000 0.83627000 0.25000000 1.0
La La2 1 0.16373000 0.83627000 0.25000000 1.0
La La3 1 0.83627000 0.67254000 0.75000000 1.0
La La4 1 0.32746000 0.16373000 0.75000000 1.0
La La5 1 0.83627000 0.16373000 0.75000000 1.0
Eu Eu6 1 0.33333300 0.66666700 0.75000000 1.0
Eu Eu7 1 0.66666700 0.33333300 0.25000000 1.0
