Basic Information
Formula
EuZnGe
MP-ID
mp-1009504
Elements
3
Sites
3
Density
6.7517
g/cm³
Volume
71.33
ų
Cell a
4.2957
Å
Cell b
4.2957
Å
Cell c
4.4634
Å
α Angle
90.00
°
β Angle
90.00
°
γ Angle
120.00
°
Space Group
P-6m2
Point Group
-6m2
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 21)
| 2θ | d (Å) | I | hkl |
|---|---|---|---|
| 23.92 | 3.7201 | 11.7 | (1,0,-1,0) |
| 31.30 | 2.8577 | 100.0 | (1,0,-1,1) |
| 40.42 | 2.2317 | 14.6 | (0,0,0,2) |
| 42.07 | 2.1478 | 13.0 | (1,1,-2,0) |
| 42.07 | 2.1478 | 26.0 | (2,-1,-1,0) |
| 47.51 | 1.9138 | 3.9 | (1,0,-1,2) |
| 48.97 | 1.8601 | 1.2 | (2,0,-2,0) |
| 53.36 | 1.7170 | 14.6 | (2,0,-2,1) |
| 53.36 | 1.7170 | 7.3 | (2,-2,0,1) |
| 59.76 | 1.5476 | 9.0 | (1,1,-2,2) |
| 59.76 | 1.5476 | 18.0 | (2,-1,-1,2) |
| 65.30 | 1.4289 | 1.0 | (2,0,-2,2) |
| 67.84 | 1.3814 | 10.6 | (1,0,-1,3) |
| 70.18 | 1.3411 | 6.4 | (2,1,-3,1) |
| 70.18 | 1.3411 | 6.4 | (3,-1,-2,1) |
| 70.18 | 1.3411 | 6.4 | (3,-2,-1,1) |
| 76.88 | 1.2401 | 4.3 | (3,0,-3,0) |
| 76.88 | 1.2401 | 2.1 | (3,-3,0,0) |
| 83.14 | 1.1619 | 4.1 | (2,0,-2,3) |
| 83.14 | 1.1619 | 2.0 | (2,-2,0,3) |
| 87.40 | 1.1159 | 1.6 | (0,0,0,4) |
Energy Properties
Formation Energy/atom
-0.54232
eV/atom
Energy/atom
-5.93261
eV/atom
Energy above Hull
0.0250
eV/atom
Uncorrected Energy
-5.9326
eV/atom
Volume/atom
23.78
ų
c/a Ratio
1.0391
Electronic Properties
Metallic
Metal
Band Gap
0
eV
Direct Gap
No
CBM
N/A
eV
Magnetic Properties
Magnetic
Yes
Total Mag. Moment
7.0357
μB
Mag. Ordering
FM
Mag. Sites
1
Magnetization/Volume
0.098640
μB/ų
Elastic Properties
KVRH
58.661
GPa
GVRH
37.354
GPa
Young's Modulus E
92.441
GPa
Poisson Ratio ν
0.237
Pugh Ratio K/G
1.570
Vickers Hardness Est.
-
GPa
Ductility
Ductile
Anisotropy
0.272
Lame λ
33.758
GPa
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
1.3089
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
17.851%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
0.3314
smaller = more stable mixing
VEC
7.667
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
-6.986
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-1009504
Reference Citation
The crystal structure and related material properties of EuZnGe were obtained from the Materials Project database (MP-ID: mp-1009504, 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_EuZnGe
_symmetry_space_group_name_H-M 'P 1'
_cell_length_a 4.29564911
_cell_length_b 4.29564911
_cell_length_c 4.46342200
_cell_angle_alpha 90.00000000
_cell_angle_beta 90.00000000
_cell_angle_gamma 119.99998632
_symmetry_Int_Tables_number 1
_chemical_formula_structural EuZnGe
_chemical_formula_sum 'Eu1 Zn1 Ge1'
_cell_volume 71.32737465
_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 0.33333300 0.66666700 0.00000000 1.0
Zn Zn1 1 0.66666700 0.33333300 0.50000000 1.0
Ge Ge2 1 0.00000000 0.00000000 0.50000000 1.0
