EuAu3
Traditional Materials TRAMP-ID: mp-1184419 · Space group: P6_3/mmc (#194)
Basic Information
Formula
EuAu3
MP-ID
mp-1184419
Elements
2
Sites
8
Density
14.1531
g/cm³
Volume
174.32
ų
Cell a
6.4839
Å
Cell b
6.4839
Å
Cell c
4.7878
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 |
|---|---|---|---|
| 15.78 | 5.6152 | 7.7 | (1,-1,0,0) |
| 15.78 | 5.6152 | 7.7 | (0,1,-1,0) |
| 15.78 | 5.6152 | 7.7 | (1,0,-1,0) |
| 31.87 | 2.8076 | 24.7 | (2,-2,0,0) |
| 31.87 | 2.8076 | 24.7 | (0,2,-2,0) |
| 31.87 | 2.8076 | 24.7 | (2,0,-2,0) |
| 37.12 | 2.4219 | 100.0 | (2,-2,0,1) |
| 37.12 | 2.4219 | 100.0 | (0,2,-2,1) |
| 37.12 | 2.4219 | 100.0 | (2,0,-2,1) |
| 37.57 | 2.3939 | 68.3 | (0,0,0,2) |
| 40.98 | 2.2021 | 1.5 | (1,-1,0,2) |
| 40.98 | 2.2021 | 3.1 | (1,0,-1,2) |
| 42.60 | 2.1223 | 1.0 | (2,-3,1,0) |
| 42.60 | 2.1223 | 1.0 | (3,-2,-1,0) |
| 42.60 | 2.1223 | 1.0 | (1,-3,2,0) |
| 42.60 | 2.1223 | 1.0 | (3,-1,-2,0) |
| 42.60 | 2.1223 | 2.0 | (2,1,-3,0) |
| 46.82 | 1.9403 | 1.5 | (2,-3,1,1) |
| 46.82 | 1.9403 | 1.5 | (3,-2,-1,1) |
| 46.82 | 1.9403 | 1.5 | (1,-3,2,1) |
| 46.82 | 1.9403 | 1.5 | (3,-1,-2,1) |
| 46.82 | 1.9403 | 3.0 | (2,1,-3,1) |
| 50.07 | 1.8216 | 14.2 | (2,-2,0,2) |
| 50.07 | 1.8216 | 14.2 | (0,2,-2,2) |
Energy Properties
Formation Energy/atom
-0.54788
eV/atom
Energy/atom
-5.57532
eV/atom
Energy above Hull
0.0390
eV/atom
Uncorrected Energy
-48.1760
eV/atom
Volume/atom
21.79
ų
c/a Ratio
0.7384
Electronic Properties
Metallic
Metal
Band Gap
0
eV
Direct Gap
No
CBM
N/A
eV
Magnetic Properties
Magnetic
Yes
Total Mag. Moment
13.8786
μB
Mag. Ordering
Unknown
Mag. Sites
0
Magnetization/Volume
0.079620
μB/ų
Elastic Properties
Elastic data not available
Feature Analysis
Composition Overview
Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
Au · 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
0.780
Family
Binary Alloy
Matrix Element
Au · 0.750
Related Tasks
Citation & References
Materials Project Page
https://materialsproject.org/materials/mp-1184419
Reference Citation
The crystal structure and related material properties of EuAu3 were obtained from the Materials Project database (MP-ID: mp-1184419, 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_EuAu3
_symmetry_space_group_name_H-M 'P 1'
_cell_length_a 6.48384821
_cell_length_b 6.48385021
_cell_length_c 4.78783903
_cell_angle_alpha 90.00000000
_cell_angle_beta 90.00000000
_cell_angle_gamma 120.00007233
_symmetry_Int_Tables_number 1
_chemical_formula_structural EuAu3
_chemical_formula_sum 'Eu2 Au6'
_cell_volume 174.31536442
_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
Eu Eu0 1 0.33333300 0.66666700 0.75000000 1.0
Eu Eu1 1 0.66666700 0.33333300 0.25000000 1.0
Au Au2 1 0.15143086 0.30286173 0.25000000 1.0
Au Au3 1 0.69713927 0.84856914 0.25000000 1.0
Au Au4 1 0.15143086 0.84856914 0.25000000 1.0
Au Au5 1 0.84856385 0.69712871 0.75000000 1.0
Au Au6 1 0.30287129 0.15143615 0.75000000 1.0
Au Au7 1 0.84856485 0.15143515 0.75000000 1.0
