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Mg14NbCo

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-1028404 · Space group: Amm2 (#38)

Basic Information

Formula
Mg14NbCo
MP-ID
mp-1028404
Elements
3
Sites
16
Density
2.4579
g/cm³
Volume
332.46
ų
Cell a
6.2870
Å
Cell b
6.0797
Å
Cell c
9.9368
Å
α Angle
90.00
°
β Angle
90.00
°
γ Angle
118.92
°
Space Group
Amm2
Point Group
mm2
Crystal System
Orthorhombic
Bravais Lattice
Orthorhombic P
Stability
No
Packing Fraction
0.5240

X-ray Diffraction

Diffraction Pattern
X-axis: 2θ (°); Y-axis: relative intensity; CuKa ; λ=1.5406 Å
Diffraction Peaks (Top 24)
2θd (Å)Ihkl
8.90 9.9368 100.0 (0,0,1)
16.11 5.5032 25.6 (1,0,0)
16.66 5.3218 3.3 (1,-1,0)
17.85 4.9684 17.4 (0,0,2)
18.43 4.8142 31.9 (1,0,1)
18.92 4.6913 4.5 (1,-1,1)
24.13 3.6878 12.4 (1,0,2)
24.51 3.6317 3.4 (1,-1,2)
26.92 3.3123 1.6 (0,0,3)
28.41 3.1412 1.0 (2,-1,0)
29.38 3.0398 4.8 (1,-2,0)
29.83 2.9951 2.7 (2,-1,1)
30.76 2.9069 7.7 (1,-2,1)
31.53 2.8379 6.7 (1,0,3)
31.82 2.8121 3.3 (1,-1,3)
32.54 2.7516 17.7 (2,0,0)
33.68 2.6609 50.5 (2,-2,0)
33.76 2.6551 1.8 (2,-1,2)
33.80 2.6518 5.2 (2,0,1)
34.59 2.5930 6.0 (1,-2,2)
34.91 2.5703 5.5 (2,-2,1)
34.91 2.5703 5.5 (0,2,1)
36.16 2.4842 60.9 (0,0,4)
37.36 2.4071 95.3 (2,0,2)
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Energy Properties

Formation Energy/atom
0.15073
eV/atom
Energy/atom
-2.35310
eV/atom
Energy above Hull
0.1705
eV/atom
Uncorrected Energy
-2.3531
eV/atom
Volume/atom
20.78
ų
c/a Ratio
-

Electronic Properties

Metallic
Metal
Band Gap
0
eV
Direct Gap
No
CBM
N/A
eV

Magnetic Properties

Magnetic
No
Total Mag. Moment
0.0210
μB
Mag. Ordering
NM
Mag. Sites
0
Magnetization/Volume
0.000060
μB/ų

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
Mg · 0.875
Element Family
Alkali-AlkEarth
Solute Fraction
0.125
Interstitial Fraction
0.000

High-Entropy Alloy Features

Composite Radar (normalized)
Element-Class Share
Mix Entropy ΔS/R
0.4634
HEA criterion (>1.0 = high entropy)
Mix Entropy ΔS
3.8528
J/mol·K
Ω Parameter
0.5423
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
5.679%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
0.1506
smaller = more stable mixing
VEC
2.625
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
-7.745
kJ/mol; negative = exothermic mixing
Entropy Norm
0.4218
SS Former
1
Phase Tendency
SS

Traditional Material Features

ROM Blended-Feature Radar
Rating & Classification
Tier
B
Score
0.749
Family
Mg-based Alloy
Matrix Element
Mg · 0.875

Related Tasks

Related computation task IDs (1)

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-1028404
Reference Citation

The crystal structure and related material properties of Mg14NbCo were obtained from the Materials Project database (MP-ID: mp-1028404, 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

BibTeX
@article{Horton2025,
  author  = {Horton, Matthew K. and Huck, Patrick and Yang, Ruo Xi and Munro, Jason M. and Dwaraknath, Shyam and Ganose, Alex M. and Kingsbury, Ryan S. and Wen, Mingjian and Shen, Jimmy X. and Mathis, Tyler S. and Kaplan, Aaron D. and Berket, Karlo and Riebesell, Janosh and George, Janine and Rosen, Andrew S. and Spotte-Smith, Evan W. C. and McDermott, Matthew J. and Cohen, Orion A. and Dunn, Alex and Kuner, Matthew C. and Rignanese, Gian-Marco and Petretto, Guido and Waroquiers, David and Griffin, Sinead M. and Neaton, Jeffrey B. and Chrzan, Daryl C. and Asta, Mark and Hautier, Geoffroy and Cholia, Shreyas and Ceder, Gerbrand and Ong, Shyue Ping and Jain, Anubhav and Persson, Kristin A.},
  title   = {Accelerated data-driven materials science with the Materials Project},
  journal = {Nature Materials},
  year    = {2025},
  volume  = {24},
  number  = {10},
  pages   = {1522--1532},
  month   = {oct},
  doi     = {10.1038/s41563-025-02272-0},
  issn    = {1476-4660},
  url     = {https://doi.org/10.1038/s41563-025-02272-0},
  abstract = {The Materials Project was launched formally in 2011 to drive materials discovery forwards through high-throughput computation and open data. More than a decade later, the Materials Project has become an indispensable tool used by more than 600,000 materials researchers around the world. This Perspective describes how the Materials Project, as a data platform and a software ecosystem, has helped to shape research in data-driven materials science. We cover how sustainable software and computational methods have accelerated materials design while becoming more open source and collaborative in nature. Next, we present cases where the Materials Project was used to understand and discover functional materials. We then describe our efforts to meet the needs of an expanding user base, through technical infrastructure updates ranging from data architecture and cloud resources to interactive web applications. Finally, we discuss opportunities to better aid the research community, with the vision that more accessible and easy-to-understand materials data will result in democratized materials knowledge and an increasingly collaborative community.}
}

3D Crystal Structure Rendering

Loading 3D structure…

Style: Ball & Stick
Raw CIF Data
# generated using pymatgen
data_Mg14NbCo
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.28698215
_cell_length_b   6.07968267
_cell_length_c   9.93678071
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   118.91513809
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Mg14NbCo
_chemical_formula_sum   'Mg14 Nb1 Co1'
_cell_volume   332.46354876
_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  0.16622322  0.33311111  0.62500000  1.0
  Mg  Mg1  1  0.16913856  0.83456878  0.62500000  1.0
  Mg  Mg2  1  0.65686236  0.33455113  0.12500000  1.0
  Mg  Mg3  1  0.66228005  0.32881264  0.62500000  1.0
  Mg  Mg4  1  0.65686236  0.82231023  0.12500000  1.0
  Mg  Mg5  1  0.66228005  0.83346641  0.62500000  1.0
  Mg  Mg6  1  0.32886053  0.16691734  0.35772030  1.0
  Mg  Mg7  1  0.32886053  0.16691734  0.89227970  1.0
  Mg  Mg8  1  0.32886053  0.66194420  0.35772030  1.0
  Mg  Mg9  1  0.32886053  0.66194420  0.89227970  1.0
  Mg  Mg10  1  0.85610061  0.17805081  0.35669808  1.0
  Mg  Mg11  1  0.85610061  0.17805081  0.89330192  1.0
  Mg  Mg12  1  0.84396686  0.67198393  0.37475778  1.0
  Mg  Mg13  1  0.84396686  0.67198393  0.87524222  1.0
  Nb  Nb14  1  0.14475882  0.82237891  0.12500000  1.0
  Co  Co15  1  0.16601750  0.33300825  0.12500000  1.0
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