EuIr2

Traditional Materials TRA

MP-ID: mp-995 · Space group: Fd-3m (#227)

Materials Project API

Basic Information

Formula

EuIr2

MP-ID

mp-995

Elements

Sites

Density

16.0157

g/cm³

Volume

111.23

Å³

Cell a

5.3982

Cell b

5.3982

Cell c

5.3982

α Angle

60.00

β Angle

60.00

γ Angle

60.00

Space Group

Fd-3m

Point Group

m-3m

Crystal System

Cubic

Bravais Lattice

Stability

Yes

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 14)

2θ	d (Å)	I	hkl
20.15	4.4076	13.2	(1,1,1)
33.19	2.6991	20.7	(2,1,1)
39.14	2.3018	100.0	(2,1,0)
40.95	2.2038	47.6	(2,2,2)
47.65	1.9085	8.3	(2,2,0)
52.23	1.7514	3.4	(3,2,2)
59.30	1.5583	7.8	(3,3,2)
63.30	1.4692	32.8	(3,3,3)
69.67	1.3495	29.7	(4,2,2)
73.37	1.2904	2.5	(4,3,2)
79.39	1.2071	3.4	(4,3,1)
82.93	1.1642	11.8	(4,4,3)
84.11	1.1509	18.7	(4,2,0)
88.80	1.1019	2.0	(4,4,4)

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Energy Properties

Formation Energy/atom

-0.59217

eV/atom

Energy/atom

-48.33870

eV/atom

Energy above Hull

0.0000

eV/atom

Uncorrected Energy

-48.3387

eV/atom

Volume/atom

18.54

Å³

c/a Ratio

1.0000

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Yes

Total Mag. Moment

12.3437

μB

Mag. Ordering

FiM

Mag. Sites

Magnetization/Volume

0.110980

μB/Å³

Elastic Properties

K_VRH

164.260

GPa

G_VRH

65.400

GPa

Young's Modulus E

173.212

GPa

Poisson Ratio ν

0.324

Pugh Ratio K/G

2.512

Vickers Hardness Est.

GPa

Ductility

Brittle

Anisotropy

0.143

Lame λ

120.660

GPa

Feature Analysis

Composition Overview

Element Composition (atomic fraction)

Composition Info

Major / Matrix Element

Ir · 0.667

Element Family

N/A

Solute Fraction

0.333

Interstitial Fraction

0.000

Traditional Material Features

ROM Blended-Feature Radar

Rating & Classification

Tier

Score

0.623

Family

Binary Alloy

Matrix Element

Ir · 0.667

Related Tasks

Related computation task IDs (5)

aaadmmvx aaadrebg aaaeuszw aaafsbik aaafzxwo

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-995

Reference Citation

The crystal structure and related material properties of EuIr2 were obtained from the Materials Project database (MP-ID: mp-995, 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_EuIr2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.39814904
_cell_length_b   5.39814904
_cell_length_c   5.39814904
_cell_angle_alpha   60.00000000
_cell_angle_beta   60.00000000
_cell_angle_gamma   60.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   EuIr2
_chemical_formula_sum   'Eu2 Ir4'
_cell_volume   111.22940513
_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  0.25000000  0.25000000  0.25000000  1.0
  Eu  Eu1  1  -0.00000000  0.00000000  0.00000000  1.0
  Ir  Ir2  1  0.62500000  0.12500000  0.62500000  1.0
  Ir  Ir3  1  0.62500000  0.62500000  0.12500000  1.0
  Ir  Ir4  1  0.12500000  0.62500000  0.62500000  1.0
  Ir  Ir5  1  0.62500000  0.62500000  0.62500000  1.0

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