Mg14CdCuO16

High-Entropy Materials HEA

MP-ID: mp-1035261 · Space group: Pmmm (#47)

Materials Project API

Basic Information

Formula

Mg14CdCuO16

MP-ID

mp-1035261

Elements

Sites

Density

4.0175

g/cm³

Volume

319.18

Å³

Cell a

8.7030

Cell b

8.5402

Cell c

4.2943

α Angle

90.00

β Angle

90.00

γ Angle

90.00

Space Group

Pmmm

Point Group

mmm

Crystal System

Orthorhombic

Bravais Lattice

Stability

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
10.16	8.7030	66.1	(1,0,0)
10.36	8.5402	5.5	(0,1,0)
14.53	6.0956	6.2	(1,1,0)
20.41	4.3515	17.9	(2,0,0)
20.68	4.2943	17.0	(0,0,1)
20.80	4.2701	17.1	(0,2,0)
22.94	3.8772	2.7	(2,1,0)
23.10	3.8510	23.5	(1,0,1)
23.18	3.8366	2.5	(0,1,1)
23.20	3.8335	23.7	(1,2,0)
25.37	3.5106	4.8	(1,1,1)
29.22	3.0566	14.9	(2,0,1)
29.30	3.0478	15.0	(2,2,0)
29.50	3.0279	14.5	(0,2,1)
30.82	2.9010	9.6	(3,0,0)
31.08	2.8778	3.2	(2,1,1)
31.28	2.8598	24.8	(1,2,1)
31.42	2.8468	1.9	(0,3,0)
32.60	2.7469	1.3	(3,1,0)
33.11	2.7057	2.2	(1,3,0)
36.14	2.4854	74.8	(2,2,1)
37.41	2.4039	9.9	(3,0,1)
37.48	2.3996	10.0	(3,2,0)
37.76	2.3823	1.3	(2,3,0)

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Energy Properties

Formation Energy/atom

-2.75891

eV/atom

Energy/atom

-6.10432

eV/atom

Energy above Hull

0.0427

eV/atom

Uncorrected Energy

-5.7608

eV/atom

Volume/atom

9.97

Å³

c/a Ratio

0.4934

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Yes

Total Mag. Moment

0.3345

μB

Mag. Ordering

Mag. Sites

Magnetization/Volume

0.001050

μB/Å³

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)

Composition Info

Major / Matrix Element

O · 0.500

Element Family

Metalloid-Nonmetal

Solute Fraction

0.500

Interstitial Fraction

0.000

High-Entropy Alloy Features

Composite Radar (normalized)

Element-Class Share

Mix Entropy ΔS/R

0.9249

HEA criterion (>1.0 = high entropy)

Mix Entropy ΔS

7.6892

J/mol·K

Ω Parameter

2.4285

Ω > 1.1 favors solid solution

Atomic Size Mismatch δr

45.106%

δr < 6.6% favors single-phase solid solution

Electronegativity Diff Δχ

1.0412

smaller = more stable mixing

VEC

3.594

valence electron concentration, affects phase stability

Mix Enthalpy ΔH_mix

-1.558

kJ/mol; negative = exothermic mixing

Entropy Norm

0.6671

SS Former

Phase Tendency

Related Tasks

Related computation task IDs (2)

aaacgxlt aaacgxra

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-1035261

Reference Citation

The crystal structure and related material properties of Mg14CdCuO16 were obtained from the Materials Project database (MP-ID: mp-1035261, 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_Mg14CdCuO16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.70302185
_cell_length_b   8.54023807
_cell_length_c   4.29428554
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Mg14CdCuO16
_chemical_formula_sum   'Mg14 Cd1 Cu1 O16'
_cell_volume   319.17654541
_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
  Mg  Mg0  1  0.50000000  -0.00000000  0.00000000  1.0
  Mg  Mg1  1  0.50000000  0.50000000  0.00000000  1.0
  Mg  Mg2  1  0.00000000  0.24272388  0.50000000  1.0
  Mg  Mg3  1  0.00000000  0.75727612  0.50000000  1.0
  Mg  Mg4  1  0.50000000  0.24841227  0.50000000  1.0
  Mg  Mg5  1  0.50000000  0.75158773  0.50000000  1.0
  Mg  Mg6  1  0.25109802  -0.00000000  0.50000000  1.0
  Mg  Mg7  1  0.25635211  0.50000000  0.50000000  1.0
  Mg  Mg8  1  0.74890198  -0.00000000  0.50000000  1.0
  Mg  Mg9  1  0.74364789  0.50000000  0.50000000  1.0
  Mg  Mg10  1  0.25371337  0.24500857  -0.00000000  1.0
  Mg  Mg11  1  0.25371337  0.75499143  0.00000000  1.0
  Mg  Mg12  1  0.74628663  0.24500857  -0.00000000  1.0
  Mg  Mg13  1  0.74628663  0.75499143  -0.00000000  1.0
  Cd  Cd14  1  0.00000000  0.50000000  0.00000000  1.0
  Cu  Cu15  1  0.00000000  -0.00000000  0.00000000  1.0
  O  O16  1  0.26363556  -0.00000000  0.00000000  1.0
  O  O17  1  0.26386933  0.50000000  0.00000000  1.0
  O  O18  1  0.73636444  -0.00000000  0.00000000  1.0
  O  O19  1  0.73613067  0.50000000  0.00000000  1.0
  O  O20  1  0.24800309  0.25037545  0.50000000  1.0
  O  O21  1  0.24800309  0.74962455  0.50000000  1.0
  O  O22  1  0.75199691  0.25037545  0.50000000  1.0
  O  O23  1  0.75199691  0.74962455  0.50000000  1.0
  O  O24  1  0.00000000  -0.00000000  0.50000000  1.0
  O  O25  1  0.00000000  0.50000000  0.50000000  1.0
  O  O26  1  0.50000000  -0.00000000  0.50000000  1.0
  O  O27  1  0.50000000  0.50000000  0.50000000  1.0
  O  O28  1  0.00000000  0.23166659  -0.00000000  1.0
  O  O29  1  0.00000000  0.76833341  0.00000000  1.0
  O  O30  1  0.50000000  0.24981787  0.00000000  1.0
  O  O31  1  0.50000000  0.75018213  0.00000000  1.0

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