Basic Information
Formula
EuAsPd
MP-ID
mp-1025079
Elements
3
Sites
6
Density
8.2400
g/cm³
Volume
134.34
ų
Cell a
4.2896
Å
Cell b
4.2896
Å
Cell c
8.4299
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
Yes
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 19)
| 2θ | d (Å) | I | hkl |
|---|---|---|---|
| 21.08 | 4.2150 | 1.6 | (0,0,0,2) |
| 23.95 | 3.7149 | 8.8 | (1,0,-1,0) |
| 26.21 | 3.3995 | 3.1 | (1,0,-1,1) |
| 32.12 | 2.7870 | 100.0 | (1,0,-1,2) |
| 32.12 | 2.7870 | 50.0 | (1,-1,0,2) |
| 42.13 | 2.1448 | 67.2 | (2,-1,-1,0) |
| 42.91 | 2.1075 | 21.3 | (0,0,0,4) |
| 49.74 | 1.8331 | 2.6 | (1,0,-1,4) |
| 53.94 | 1.6997 | 22.7 | (2,0,-2,2) |
| 53.94 | 1.6997 | 11.4 | (2,-2,0,2) |
| 61.71 | 1.5032 | 14.3 | (1,1,-2,4) |
| 61.71 | 1.5032 | 28.6 | (2,-1,-1,4) |
| 70.72 | 1.3321 | 10.1 | (2,1,-3,2) |
| 70.72 | 1.3321 | 20.2 | (3,-1,-2,2) |
| 71.84 | 1.3141 | 14.5 | (1,0,-1,6) |
| 77.01 | 1.2383 | 7.5 | (3,0,-3,0) |
| 77.01 | 1.2383 | 3.8 | (3,-3,0,0) |
| 86.94 | 1.1205 | 6.0 | (2,0,-2,6) |
| 86.94 | 1.1205 | 3.0 | (2,-2,0,6) |
Energy Properties
Formation Energy/atom
-1.01908
eV/atom
Energy/atom
-7.73179
eV/atom
Energy above Hull
0.0000
eV/atom
Uncorrected Energy
-26.5493
eV/atom
Volume/atom
22.39
ų
c/a Ratio
1.9652
Electronic Properties
Metallic
Metal
Band Gap
0
eV
Direct Gap
No
CBM
N/A
eV
Magnetic Properties
Magnetic
Yes
Total Mag. Moment
13.5417
μB
Mag. Ordering
Unknown
Mag. Sites
0
Magnetization/Volume
0.100800
μB/ų
Elastic Properties
Elastic data not available
Feature Analysis
Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
Eu · 0.333
Element Family
Lanthanide
Solute Fraction
0.667
Interstitial Fraction
0.000
Composite Radar (normalized)
Element-Class Share
Mix Entropy ΔS/R
1.0986
HEA criterion (>1.0 = high entropy)
Mix Entropy ΔS
9.1339
J/mol·K
Ω Parameter
0.0000
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
20.064%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
0.4668
smaller = more stable mixing
VEC
6.667
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
0.000
kJ/mol; negative = exothermic mixing
Entropy Norm
1.0000
SS Former
0
Phase Tendency
IM
Related Tasks
Citation & References
Materials Project Page
https://materialsproject.org/materials/mp-1025079
Reference Citation
The crystal structure and related material properties of EuAsPd were obtained from the Materials Project database (MP-ID: mp-1025079, 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_EuAsPd
_symmetry_space_group_name_H-M 'P 1'
_cell_length_a 4.28963188
_cell_length_b 4.28963188
_cell_length_c 8.42992557
_cell_angle_alpha 90.00000000
_cell_angle_beta 90.00000000
_cell_angle_gamma 119.99999160
_symmetry_Int_Tables_number 1
_chemical_formula_structural EuAsPd
_chemical_formula_sum 'Eu2 As2 Pd2'
_cell_volume 134.33663215
_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 0.00000000 0.00000000 0.50000000 1.0
Eu Eu1 1 0.00000000 0.00000000 -0.00000000 1.0
As As2 1 0.66666700 0.33333300 0.75013746 1.0
As As3 1 0.33333300 0.66666700 0.24986254 1.0
Pd Pd4 1 0.66666700 0.33333300 0.25013863 1.0
Pd Pd5 1 0.33333300 0.66666700 0.74986137 1.0
