Dy2CuIr

高熵材料 HEA 传统材料 TRA

MP-ID: mp-864963 · Space group: Fm-3m (#225)

Materials Project API

Basic Information

Formula

Dy2CuIr

MP-ID

mp-864963

Elements

Sites

Density

11.8870

g/cm³

Volume

81.13

Å³

Cell a

4.8592

Cell b

4.8592

Cell c

4.8592

α Angle

60.00

β Angle

60.00

γ Angle

60.00

Space Group

Fm-3m

Point Group

m-3m

Crystal System

Cubic

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 10)

2θ	d (Å)	I	hkl
22.41	3.9675	10.0	(1,1,1)
25.93	3.4360	1.5	(1,1,0)
37.00	2.4296	100.0	(2,1,1)
43.69	2.0720	5.5	(2,2,1)
53.33	1.7180	17.5	(2,2,0)
58.55	1.5765	2.4	(3,2,2)
66.68	1.4027	35.6	(3,3,2)
71.31	1.3225	1.9	(3,3,3)
78.78	1.2148	11.1	(4,2,2)
83.16	1.1616	2.0	(4,3,2)

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Energy Properties

Formation Energy/atom

-0.59494

eV/atom

Energy/atom

-6.13854

eV/atom

Energy above Hull

0.0188

eV/atom

Uncorrected Energy

-6.1385

eV/atom

Volume/atom

20.28

Å³

c/a Ratio

1.0000

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Total Mag. Moment

0.0001

μB

Mag. Ordering

Mag. Sites

Magnetization/Volume

0.000000

μB/Å³

Elastic Properties

Elastic data not available

Feature Analysis

Element Composition (atomic fraction)

Composition Info

Major / Matrix Element

Dy · 0.500

Element Family

Lanthanide

Solute Fraction

0.500

Interstitial Fraction

0.000

Composite Radar (normalized)

Element-Class Share

Mix Entropy ΔS/R

1.0397

HEA criterion (>1.0 = high entropy)

Mix Entropy ΔS

8.6442

J/mol·K

Ω Parameter

5.9672

Ω > 1.1 favors solid solution

Atomic Size Mismatch δr

14.127%

δr < 6.6% favors single-phase solid solution

Electronegativity Diff Δχ

0.4283

smaller = more stable mixing

VEC

10.000

valence electron concentration, affects phase stability

Mix Enthalpy ΔH_mix

-2.701

kJ/mol; negative = exothermic mixing

Entropy Norm

0.9464

SS Former

Phase Tendency

Related Tasks

Related computation task IDs (5)

aaadnxmw aaadwody aaaefjvg aaaeshwx aaafxfcc

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-864963

Reference Citation

The crystal structure and related material properties of Dy2CuIr were obtained from the Materials Project database (MP-ID: mp-864963, 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_Dy2CuIr
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.85918830
_cell_length_b   4.85918830
_cell_length_c   4.85918830
_cell_angle_alpha   60.00000000
_cell_angle_beta   60.00000000
_cell_angle_gamma   60.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Dy2CuIr
_chemical_formula_sum   'Dy2 Cu1 Ir1'
_cell_volume   81.12901246
_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  0.75000000  0.75000000  0.75000000  1.0
  Dy  Dy1  1  0.25000000  0.25000000  0.25000000  1.0
  Cu  Cu2  1  0.50000000  0.50000000  0.50000000  1.0
  Ir  Ir3  1  0.00000000  0.00000000  0.00000000  1.0

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