Eu3(GeIr)4

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-1095238 · Space group: I-43m (#217)

Materials Project API

Basic Information

Formula

Eu3(GeIr)4

MP-ID

mp-1095238

Elements

Sites

Density

10.8962

g/cm³

Volume

230.93

Å³

Cell a

6.6942

Cell b

6.6942

Cell c

6.6942

α Angle

109.47

β Angle

109.47

γ Angle

109.47

Space Group

I-43m

Point Group

-43m

Crystal System

Cubic

Bravais Lattice

Stability

Yes

Packing Fraction

0.6802

X-ray Diffraction

Diffraction Pattern

Target / Radiation

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

Diffraction Peaks (Top 23)

2θ	d (Å)	I	hkl
16.22	5.4658	47.1	(1,0,0)
23.01	3.8649	5.6	(1,1,-1)
28.28	3.1557	44.2	(1,1,0)
32.77	2.7329	60.1	(2,0,0)
36.77	2.4444	100.0	(2,1,-1)
40.42	2.2314	31.6	(1,1,1)
43.82	2.0659	49.4	(2,1,0)
47.02	1.9325	2.2	(2,2,-2)
50.07	1.8219	42.1	(2,2,-1)
52.98	1.7284	21.2	(3,1,-1)
55.78	1.6480	13.8	(2,1,1)
58.50	1.5778	12.4	(2,2,0)
61.13	1.5159	14.9	(3,1,0)
66.22	1.4113	17.0	(3,2,-1)
68.69	1.3665	26.5	(4,0,0)
71.12	1.3257	12.9	(2,2,1)
73.51	1.2883	11.2	(3,1,1)
75.87	1.2539	19.5	(3,2,0)
78.21	1.2222	2.3	(4,2,-2)
82.84	1.1653	22.8	(3,3,-1)
85.13	1.1397	7.1	(4,2,-1)
87.41	1.1157	1.0	(2,2,2)
89.69	1.0932	11.7	(3,2,1)

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Energy Properties

Formation Energy/atom

-0.68378

eV/atom

Energy/atom

-8.38470

eV/atom

Energy above Hull

0.0000

eV/atom

Uncorrected Energy

-8.3847

eV/atom

Volume/atom

20.99

Å³

c/a Ratio

1.0000

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Yes

Total Mag. Moment

20.5595

μB

Mag. Ordering

Mag. Sites

Magnetization/Volume

0.089030

μB/Å³

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)

Composition Info

Major / Matrix Element

Ge · 0.364

Element Family

PostTransition-Noble

Solute Fraction

0.636

Interstitial Fraction

0.000

High-Entropy Alloy Features

Composite Radar (normalized)

Element-Class Share

Mix Entropy ΔS/R

1.0901

HEA criterion (>1.0 = high entropy)

Mix Entropy ΔS

9.0628

J/mol·K

Ω Parameter

23.2597

Ω > 1.1 favors solid solution

Atomic Size Mismatch δr

17.006%

δr < 6.6% favors single-phase solid solution

Electronegativity Diff Δχ

0.4111

smaller = more stable mixing

VEC

6.636

valence electron concentration, affects phase stability

Mix Enthalpy ΔH_mix

0.676

kJ/mol; negative = exothermic mixing

Entropy Norm

0.9922

SS Former

Phase Tendency

Traditional Material Features

ROM Blended-Feature Radar

Rating & Classification

Tier

Score

0.409

Family

Ge-rich Multi-Component

Matrix Element

Ge · 0.364

Related Tasks

Related computation task IDs (5)

aaadmydj aaadsvow aaaetzmn aaaezlxc aaafwzfw

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-1095238

Reference Citation

The crystal structure and related material properties of Eu3(GeIr)4 were obtained from the Materials Project database (MP-ID: mp-1095238, 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_Eu3(GeIr)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.69421702
_cell_length_b   6.69421702
_cell_length_c   6.69421702
_cell_angle_alpha   109.47122063
_cell_angle_beta   109.47122063
_cell_angle_gamma   109.47122063
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Eu3(GeIr)4
_chemical_formula_sum   'Eu3 Ge4 Ir4'
_cell_volume   230.92846709
_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  0.50000000  0.50000000  0.00000000  1.0
  Eu  Eu1  1  0.50000000  0.00000000  0.50000000  1.0
  Eu  Eu2  1  0.00000000  0.50000000  0.50000000  1.0
  Ge  Ge3  1  0.00000000  0.37767400  0.00000000  1.0
  Ge  Ge4  1  0.00000000  0.00000000  0.37767400  1.0
  Ge  Ge5  1  0.62232600  0.62232600  0.62232600  1.0
  Ge  Ge6  1  0.37767400  0.00000000  0.00000000  1.0
  Ir  Ir7  1  0.00000000  0.73618800  0.00000000  1.0
  Ir  Ir8  1  0.00000000  0.00000000  0.73618800  1.0
  Ir  Ir9  1  0.26381200  0.26381200  0.26381200  1.0
  Ir  Ir10  1  0.73618800  0.00000000  0.00000000  1.0

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