Mn4Al(CuO4)3

High-Entropy Materials HEA

MP-ID: mp-1045744 · Space group: Im-3 (#204)

Materials Project API

Basic Information

Formula

Mn4Al(CuO4)3

MP-ID

mp-1045744

Elements

Sites

Density

5.3808

g/cm³

Volume

194.23

Å³

Cell a

6.3189

Cell b

6.3189

Cell c

6.3189

α Angle

109.47

β Angle

109.47

γ Angle

109.47

Space Group

Im-3

Point Group

m-3

Crystal System

Cubic

Bravais Lattice

Stability

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 14)

2θ	d (Å)	I	hkl
17.19	5.1594	4.4	(1,0,0)
30.00	2.9788	9.0	(1,1,0)
34.78	2.5797	100.0	(2,0,0)
39.04	2.3074	6.0	(2,1,-1)
42.94	2.1063	2.3	(1,1,1)
46.57	1.9501	3.9	(2,1,0)
50.00	1.8241	29.0	(2,2,-2)
53.26	1.7198	2.1	(2,2,-1)
62.34	1.4894	49.5	(2,2,0)
65.20	1.4310	1.2	(3,1,0)
70.72	1.3322	1.2	(3,2,-1)
73.41	1.2899	12.5	(4,0,0)
76.06	1.2513	2.6	(2,2,1)
83.86	1.1537	15.4	(4,2,-2)

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Energy Properties

Formation Energy/atom

-1.53426

eV/atom

Energy/atom

-7.13760

eV/atom

Energy above Hull

0.2488

eV/atom

Uncorrected Energy

-6.3918

eV/atom

Volume/atom

9.71

Å³

c/a Ratio

1.0000

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Yes

Total Mag. Moment

9.9982

μB

Mag. Ordering

FiM

Mag. Sites

Magnetization/Volume

0.051480

μB/Å³

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)

Composition Info

Major / Matrix Element

O · 0.600

Element Family

Metalloid-Nonmetal

Solute Fraction

0.400

Interstitial Fraction

0.000

High-Entropy Alloy Features

Composite Radar (normalized)

Element-Class Share

Mix Entropy ΔS/R

1.0627

HEA criterion (>1.0 = high entropy)

Mix Entropy ΔS

8.8356

J/mol·K

Ω Parameter

16.7322

Ω > 1.1 favors solid solution

Atomic Size Mismatch δr

38.910%

δr < 6.6% favors single-phase solid solution

Electronegativity Diff Δχ

0.8642

smaller = more stable mixing

VEC

5.600

valence electron concentration, affects phase stability

Mix Enthalpy ΔH_mix

-0.310

kJ/mol; negative = exothermic mixing

Entropy Norm

0.7666

SS Former

Phase Tendency

Related Tasks

Related computation task IDs (2)

aaachmzr aaaeahvy

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-1045744

Reference Citation

The crystal structure and related material properties of Mn4Al(CuO4)3 were obtained from the Materials Project database (MP-ID: mp-1045744, 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_Mn4Al(CuO4)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.31892491
_cell_length_b   6.31892491
_cell_length_c   6.31892491
_cell_angle_alpha   109.47122063
_cell_angle_beta   109.47122063
_cell_angle_gamma   109.47122063
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Mn4Al(CuO4)3
_chemical_formula_sum   'Mn4 Al1 Cu3 O12'
_cell_volume   194.22614644
_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
  Mn  Mn0  1  0.00000000  0.00000000  0.50000000  1.0
  Mn  Mn1  1  0.00000000  0.50000000  0.00000000  1.0
  Mn  Mn2  1  0.50000000  0.00000000  0.00000000  1.0
  Mn  Mn3  1  0.50000000  0.50000000  0.50000000  1.0
  Al  Al4  1  0.00000000  0.00000000  0.00000000  1.0
  Cu  Cu5  1  0.00000000  0.50000000  0.50000000  1.0
  Cu  Cu6  1  0.50000000  0.00000000  0.50000000  1.0
  Cu  Cu7  1  0.50000000  0.50000000  0.00000000  1.0
  O  O8  1  0.29337900  0.12233500  0.82895600  1.0
  O  O9  1  0.70662100  0.87766500  0.17104400  1.0
  O  O10  1  0.70662100  0.53557700  0.82895600  1.0
  O  O11  1  0.46442300  0.17104400  0.29337900  1.0
  O  O12  1  0.17104400  0.29337900  0.46442300  1.0
  O  O13  1  0.82895600  0.29337900  0.12233500  1.0
  O  O14  1  0.87766500  0.17104400  0.70662100  1.0
  O  O15  1  0.82895600  0.70662100  0.53557700  1.0
  O  O16  1  0.29337900  0.46442300  0.17104400  1.0
  O  O17  1  0.53557700  0.82895600  0.70662100  1.0
  O  O18  1  0.17104400  0.70662100  0.87766500  1.0
  O  O19  1  0.12233500  0.82895600  0.29337900  1.0

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