AlCrRu2

高熵材料 HEA 传统材料 TRA 弹性数据 ELA

MP-ID: mp-862781 · Space group: Fm-3m (#225)

Materials Project API

Basic Information

Formula

AlCrRu2

MP-ID

mp-862781

Elements

Sites

Density

8.9091

g/cm³

Volume

52.40

Å³

Cell a

4.2002

Cell b

4.2002

Cell c

4.2002

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

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 7)

2θ	d (Å)	I	hkl
25.98	3.4295	2.4	(1,1,1)
30.09	2.9700	25.8	(1,1,0)
43.07	2.1001	100.0	(2,1,1)
53.43	1.7147	7.0	(2,2,2)
62.55	1.4850	15.8	(2,2,0)
70.96	1.3282	9.0	(3,2,1)
78.96	1.2125	31.5	(3,3,2)

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Energy Properties

Formation Energy/atom

-0.36869

eV/atom

Energy/atom

-18.53231

eV/atom

Energy above Hull

0.0000

eV/atom

Uncorrected Energy

-18.5323

eV/atom

Volume/atom

13.10

Å³

c/a Ratio

1.0000

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Yes

Total Mag. Moment

1.1216

μB

Mag. Ordering

Unknown

Mag. Sites

Magnetization/Volume

0.021410

μB/Å³

Elastic Properties

K_VRH

230.931

GPa

G_VRH

111.317

GPa

Young's Modulus E

287.720

GPa

Poisson Ratio ν

0.292

Pugh Ratio K/G

2.075

Vickers Hardness Est.

GPa

Ductility

Brittle

Anisotropy

0.000

Lame λ

156.720

GPa

Feature Analysis

Element Composition (atomic fraction)

Composition Info

Major / Matrix Element

Ru · 0.500

Element Family

4d-TM

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

1.0331

Ω > 1.1 favors solid solution

Atomic Size Mismatch δr

3.975%

δr < 6.6% favors single-phase solid solution

Electronegativity Diff Δχ

0.2831

smaller = more stable mixing

VEC

6.250

valence electron concentration, affects phase stability

Mix Enthalpy ΔH_mix

-17.420

kJ/mol; negative = exothermic mixing

Entropy Norm

0.9464

SS Former

Phase Tendency

Related Tasks

Related computation task IDs (5)

aaachtxn aaaduqjf aaaeheiu aaaetifd aaafjbkm

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-862781

Reference Citation

The crystal structure and related material properties of AlCrRu2 were obtained from the Materials Project database (MP-ID: mp-862781, 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_AlCrRu2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.20022469
_cell_length_b   4.20022469
_cell_length_c   4.20022469
_cell_angle_alpha   60.00000000
_cell_angle_beta   60.00000000
_cell_angle_gamma   60.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   AlCrRu2
_chemical_formula_sum   'Al1 Cr1 Ru2'
_cell_volume   52.39653553
_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
  Al  Al0  1  0.25000000  0.25000000  0.25000000  1.0
  Cr  Cr1  1  0.75000100  0.75000100  0.75000100  1.0
  Ru  Ru2  1  0.00000000  0.00000000  0.00000000  1.0
  Ru  Ru3  1  0.50000100  0.50000100  0.50000100  1.0

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