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Tb12ZnCo4Pb

High-Entropy Materials HEA

MP-ID: mp-3296337 · Space group: Immm (#71)

Basic Information

Formula
Tb12ZnCo4Pb
MP-ID
mp-3296337
Elements
4
Sites
18
Density
8.9816
g/cm³
Volume
446.57
ų
Cell a
8.3443
Å
Cell b
8.3443
Å
Cell c
8.3443
Å
α Angle
111.96
°
β Angle
108.79
°
γ Angle
107.70
°
Space Group
Immm
Point Group
mmm
Crystal System
Orthorhombic
Bravais Lattice
Orthorhombic I
Stability
Yes
Packing Fraction
0.6800

X-ray Diffraction

Diffraction Pattern
X-axis: 2θ (°); Y-axis: relative intensity; CuKa ; λ=1.5406 Å
Diffraction Peaks (Top 24)
2θd (Å)Ihkl
12.80 6.9154 1.8 (0,1,-1)
19.01 4.6686 1.1 (1,-1,-1)
22.37 3.9736 1.0 (2,0,-1)
22.52 3.9480 3.3 (1,-2,1)
22.98 3.8694 1.5 (1,-2,0)
26.31 3.3874 11.3 (0,2,0)
26.48 3.3662 2.4 (2,-2,0)
28.71 3.1090 10.7 (1,2,-2)
28.84 3.0959 6.4 (1,2,-1)
28.84 3.0959 6.4 (2,1,-2)
29.02 3.0766 28.1 (1,-2,2)
29.18 3.0599 4.4 (2,-2,1)
30.15 2.9641 33.8 (2,-2,-1)
32.22 2.7786 100.0 (3,-1,-1)
34.51 2.5987 58.6 (1,-3,2)
34.66 2.5877 23.9 (0,3,-1)
34.66 2.5877 23.9 (3,0,-2)
34.93 2.5689 19.2 (2,-3,1)
34.93 2.5689 6.4 (0,1,-3)
35.35 2.5392 1.5 (1,-3,0)
35.45 2.5325 7.7 (2,-3,0)
35.45 2.5325 23.0 (0,1,2)
36.51 2.4612 14.9 (2,2,-2)
37.01 2.4291 9.5 (2,-2,2)
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Energy Properties

Formation Energy/atom
-0.24022
eV/atom
Energy/atom
-27.62076
eV/atom
Energy above Hull
0.0000
eV/atom
Uncorrected Energy
-27.6208
eV/atom
Volume/atom
24.81
ų
c/a Ratio
-

Electronic Properties

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

Magnetic Properties

Magnetic
Yes
Total Mag. Moment
0.2069
μB
Mag. Ordering
FiM
Mag. Sites
10
Magnetization/Volume
0.000460
μB/ų

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
Tb · 0.667
Element Family
Lanthanide
Solute Fraction
0.333
Interstitial Fraction
0.000

High-Entropy Alloy Features

Composite Radar (normalized)
Element-Class Share
Mix Entropy ΔS/R
0.9257
HEA criterion (>1.0 = high entropy)
Mix Entropy ΔS
7.6963
J/mol·K
Ω Parameter
13.1290
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
13.410%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
0.4024
smaller = more stable mixing
VEC
8.889
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
0.909
kJ/mol; negative = exothermic mixing
Entropy Norm
0.6678
SS Former
0
Phase Tendency
IM

Related Tasks

Related computation task IDs (1)

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-3296337
Reference Citation

The crystal structure and related material properties of Tb12ZnCo4Pb were obtained from the Materials Project database (MP-ID: mp-3296337, 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_Tb12ZnCo4Pb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.34428666
_cell_length_b   8.34428812
_cell_length_c   8.34428642
_cell_angle_alpha   111.95753282
_cell_angle_beta   108.78689555
_cell_angle_gamma   107.69990539
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Tb12ZnCo4Pb
_chemical_formula_sum   'Tb12 Zn1 Co4 Pb1'
_cell_volume   446.57228721
_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
  Tb  Tb0  1  0.02575354  0.72576017  0.29999338  1.0
  Tb  Tb1  1  0.97424646  0.27423983  0.70000662  1.0
  Tb  Tb2  1  0.57423221  0.27423983  0.29999338  1.0
  Tb  Tb3  1  0.42576779  0.72576017  0.70000662  1.0
  Tb  Tb4  1  0.67509226  0.86115488  0.18606261  1.0
  Tb  Tb5  1  0.32490774  0.51097135  0.18606261  1.0
  Tb  Tb6  1  0.32490774  0.13884512  0.81393739  1.0
  Tb  Tb7  1  0.67509226  0.48902865  0.81393739  1.0
  Tb  Tb8  1  0.17927836  0.21668108  0.39595945  1.0
  Tb  Tb9  1  0.82072164  0.21668108  0.03740172  1.0
  Tb  Tb10  1  0.17927836  0.78331892  0.96259828  1.0
  Tb  Tb11  1  0.82072164  0.78331892  0.60404055  1.0
  Zn  Zn12  1  0.00000000  0.50000000  0.50000000  1.0
  Co  Co13  1  0.65559711  0.50000000  0.15559711  1.0
  Co  Co14  1  0.34440289  0.50000000  0.84440289  1.0
  Co  Co15  1  0.88767689  0.88767689  1.00000000  1.0
  Co  Co16  1  0.11232311  0.11232311  0.00000000  1.0
  Pb  Pb17  1  0.50000000  0.00000000  0.50000000  1.0
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