EuZnGe

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-1077099 · Space group: P6_3mc (#186)

Materials Project API

Basic Information

Formula

EuZnGe

MP-ID

mp-1077099

Elements

Sites

Density

7.1430

g/cm³

Volume

134.84

Å³

Cell a

4.5027

Cell b

4.5027

Cell c

7.6796

α Angle

90.00

β Angle

90.00

γ Angle

120.00

Space Group

P6_3mc

Point Group

6mm

Crystal System

Hexagonal

Bravais Lattice

Stability

Packing Fraction

0.7405

X-ray Diffraction

Diffraction Pattern

Target / Radiation

X-axis: 2θ (°); Y-axis: relative intensity; Cu Kα ; λ=1.5418 Å

Diffraction Peaks (Top 22)

2θ	d (Å)	I	hkl
22.81	3.8994	15.4	(1,0,-1,0)
25.62	3.4769	2.1	(1,0,-1,1)
32.73	2.7360	100.0	(1,0,-1,2)
40.05	2.2513	52.7	(2,-1,-1,0)
42.23	2.1400	4.4	(1,0,-1,3)
46.58	1.9497	2.4	(2,0,-2,0)
47.35	1.9199	8.3	(0,0,0,4)
52.65	1.7385	25.7	(2,0,-2,2)
53.18	1.7225	5.0	(1,0,-1,4)
59.61	1.5511	1.5	(2,0,-2,3)
63.08	1.4739	1.3	(3,-1,-2,0)
63.70	1.4608	20.1	(2,-1,-1,4)
65.29	1.4291	2.6	(1,0,-1,5)
68.15	1.3760	23.5	(3,-1,-2,2)
68.60	1.3680	2.4	(2,0,-2,4)
72.75	1.2998	8.8	(3,0,-3,0)
74.25	1.2773	1.5	(3,-1,-2,3)
78.68	1.2161	5.6	(1,0,-1,6)
79.43	1.2065	1.5	(2,0,-2,5)
82.51	1.1691	3.0	(3,-1,-2,4)
86.45	1.1257	5.7	(4,-2,-2,0)
87.71	1.1127	1.1	(2,-1,-1,6)

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Energy Properties

Formation Energy/atom

-0.54833

eV/atom

Energy/atom

-5.93862

eV/atom

Energy above Hull

0.0190

eV/atom

Uncorrected Energy

-5.9386

eV/atom

Volume/atom

22.47

Å³

c/a Ratio

1.7056

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Yes

Total Mag. Moment

13.9997

μB

Mag. Ordering

Mag. Sites

Magnetization/Volume

0.103830

μB/Å³

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)

Composition Info

Major / Matrix Element

Eu · 0.333

Element Family

Lanthanide

Solute Fraction

0.667

Interstitial Fraction

0.000

High-Entropy Alloy Features

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

Phase Tendency

Traditional Material Features

ROM Blended-Feature Radar

Rating & Classification

Tier

Score

0.417

Family

Eu-rich Multi-Component

Matrix Element

Eu · 0.333

Related Tasks

Related computation task IDs (5)

aaadoppd aaadwfzs aaaefnlf aaaesooj aaafbiis

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-1077099

Reference Citation

The crystal structure and related material properties of EuZnGe were obtained from the Materials Project database (MP-ID: mp-1077099, 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

Loading 3D structure…

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Raw CIF Data

# generated using pymatgen
data_EuZnGe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.50268783
_cell_length_b   4.50268783
_cell_length_c   7.67961800
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   119.99999754
_symmetry_Int_Tables_number   1
_chemical_formula_structural   EuZnGe
_chemical_formula_sum   'Eu2 Zn2 Ge2'
_cell_volume   134.83850783
_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  0.50269500  1.0
  Eu  Eu1  1  0.00000000  0.00000000  0.00269500  1.0
  Zn  Zn2  1  0.33333300  0.66666700  0.27747900  1.0
  Zn  Zn3  1  0.66666700  0.33333300  0.77747900  1.0
  Ge  Ge4  1  0.33333300  0.66666700  0.71982500  1.0
  Ge  Ge5  1  0.66666700  0.33333300  0.21982500  1.0

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