Dy4GeB4Ir9

High-Entropy Materials HEA

MP-ID: mp-3292500 · Space group: R-3m (#166)

Materials Project API

Basic Information

Formula

Dy4GeB4Ir9

MP-ID

mp-3292500

Elements

Sites

Density

15.5002

g/cm³

Volume

267.38

Å³

Cell a

10.7177

Cell b

10.7177

Cell c

10.7177

α Angle

29.69

β Angle

29.69

γ Angle

29.69

Space Group

R-3m

Point Group

-3m

Crystal System

Trigonal

Bravais Lattice

Stability

Yes

Packing Fraction

X-ray Diffraction

Diffraction Pattern

Target / Radiation

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

Diffraction Peaks (Top 24)

2θ	d (Å)	I	hkl
8.64	10.2380	2.8	(1,1,1)
17.32	5.1190	2.7	(2,2,2)
18.88	4.6998	2.3	(1,0,0)
19.54	4.5429	1.7	(1,1,0)
23.66	3.7605	1.2	(2,1,2)
26.11	3.4127	24.5	(3,3,3)
29.91	2.9873	6.3	(3,2,3)
29.91	2.9873	3.2	(3,3,2)
32.61	2.7458	1.4	(1,0,-1)
33.80	2.6520	2.5	(2,0,1)
33.80	2.6520	3.7	(2,1,0)
33.80	2.6520	1.2	(1,2,0)
34.77	2.5801	43.8	(4,3,3)
34.77	2.5801	21.9	(3,4,3)
35.06	2.5595	15.0	(4,4,4)
37.16	2.4197	5.5	(3,1,2)
37.16	2.4197	5.5	(3,2,1)
37.35	2.4079	33.4	(4,3,4)
37.35	2.4079	16.7	(4,4,3)
37.95	2.3708	50.0	(1,-1,-1)
37.95	2.3708	100.0	(1,1,-1)
38.30	2.3499	36.7	(2,0,0)
38.30	2.3499	18.4	(0,0,2)
39.68	2.2715	4.2	(2,0,2)

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Energy Properties

Formation Energy/atom

-0.89405

eV/atom

Energy/atom

-36.58398

eV/atom

Energy above Hull

0.0000

eV/atom

Uncorrected Energy

-36.5840

eV/atom

Volume/atom

14.85

Å³

c/a Ratio

1.0000

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Total Mag. Moment

0.0077

μB

Mag. Ordering

Mag. Sites

Magnetization/Volume

0.000030

μB/Å³

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)

Composition Info

Major / Matrix Element

Ir · 0.500

Element Family

5d-TM

Solute Fraction

0.500

Interstitial Fraction

0.222

High-Entropy Alloy Features

Composite Radar (normalized)

Element-Class Share

Mix Entropy ΔS/R

1.1756

HEA criterion (>1.0 = high entropy)

Mix Entropy ΔS

9.7742

J/mol·K

Ω Parameter

3.1742

Ω > 1.1 favors solid solution

Atomic Size Mismatch δr

21.269%

δr < 6.6% favors single-phase solid solution

Electronegativity Diff Δχ

0.3892

smaller = more stable mixing

VEC

7.611

valence electron concentration, affects phase stability

Mix Enthalpy ΔH_mix

-7.181

kJ/mol; negative = exothermic mixing

Entropy Norm

0.8480

SS Former

Phase Tendency

Related Tasks

Related computation task IDs (1)

aaahfioq

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-3292500

Reference Citation

The crystal structure and related material properties of Dy4GeB4Ir9 were obtained from the Materials Project database (MP-ID: mp-3292500, 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_Dy4GeB4Ir9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.71767614
_cell_length_b   10.71767548
_cell_length_c   10.71767668
_cell_angle_alpha   29.68807857
_cell_angle_beta   29.68808390
_cell_angle_gamma   29.68808963
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Dy4GeB4Ir9
_chemical_formula_sum   'Dy4 Ge1 B4 Ir9'
_cell_volume   267.37879868
_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
  Dy  Dy0  1  0.14987748  0.14987748  0.14987748  1.0
  Dy  Dy1  1  0.94997173  0.94997173  0.94997173  1.0
  Dy  Dy2  1  0.85012252  0.85012252  0.85012252  1.0
  Dy  Dy3  1  0.05002827  0.05002827  0.05002827  1.0
  Ge  Ge4  1  0.50000000  0.50000000  0.50000000  1.0
  B  B5  1  0.61592644  0.61592644  0.61592644  1.0
  B  B6  1  0.71811940  0.71811940  0.71811940  1.0
  B  B7  1  0.38407356  0.38407356  0.38407356  1.0
  B  B8  1  0.28188060  0.28188060  0.28188060  1.0
  Ir  Ir9  1  0.40191928  0.90090022  0.40191928  1.0
  Ir  Ir10  1  0.90090022  0.40191928  0.40191928  1.0
  Ir  Ir11  1  0.50000000  0.50000000  0.00000000  1.0
  Ir  Ir12  1  0.50000000  0.00000000  0.50000000  1.0
  Ir  Ir13  1  0.00000000  0.50000000  0.50000000  1.0
  Ir  Ir14  1  0.59808072  0.09909978  0.59808072  1.0
  Ir  Ir15  1  0.59808072  0.59808072  0.09909978  1.0
  Ir  Ir16  1  0.09909978  0.59808072  0.59808072  1.0
  Ir  Ir17  1  0.40191928  0.40191928  0.90090022  1.0

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