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TmNbCrB6

High-Entropy Materials HEA

MP-ID: mp-3319637 · Space group: Pbam (#55)

Basic Information

Formula
TmNbCrB6
MP-ID
mp-3319637
Elements
4
Sites
36
Density
7.4231
g/cm³
Volume
338.86
ų
Cell a
3.3778
Å
Cell b
8.9242
Å
Cell c
11.2414
Å
α Angle
90.00
°
β Angle
90.00
°
γ Angle
90.00
°
Space Group
Pbam
Point Group
mmm
Crystal System
Orthorhombic
Bravais Lattice
Orthorhombic P
Stability
Yes
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
12.66 6.9895 2.5 (0,1,1)
15.77 5.6207 5.7 (0,0,2)
18.66 4.7560 25.2 (0,1,2)
19.90 4.4621 4.1 (0,2,0)
21.43 4.1473 15.5 (0,2,1)
25.49 3.4947 4.9 (0,2,2)
25.79 3.4549 2.5 (0,1,3)
26.39 3.3778 100.0 (1,0,0)
30.89 2.8952 3.6 (1,0,2)
31.10 2.8757 63.4 (0,3,1)
31.17 2.8695 58.5 (0,2,3)
31.84 2.8103 28.7 (0,0,4)
32.51 2.7539 17.5 (1,1,2)
33.27 2.6932 2.8 (1,2,0)
33.43 2.6806 39.1 (0,1,4)
34.10 2.6292 20.5 (0,3,2)
34.24 2.6191 13.3 (1,2,1)
37.01 2.4288 4.7 (1,2,2)
37.23 2.4153 2.7 (1,1,3)
38.65 2.3298 7.0 (0,3,3)
40.43 2.2310 1.9 (0,4,0)
41.23 2.1897 74.3 (1,3,1)
41.28 2.1869 69.4 (1,2,3)
41.81 2.1604 35.2 (1,0,4)
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Energy Properties

Formation Energy/atom
-0.75436
eV/atom
Energy/atom
-13.97731
eV/atom
Energy above Hull
0.0000
eV/atom
Uncorrected Energy
-13.9773
eV/atom
Volume/atom
9.41
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
5.2330
μB
Mag. Ordering
FM
Mag. Sites
4
Magnetization/Volume
0.015440
μB/ų

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
B · 0.667
Element Family
Metalloid-Nonmetal
Solute Fraction
0.333
Interstitial Fraction
0.667

High-Entropy Alloy Features

Composite Radar (normalized)
Element-Class Share
Mix Entropy ΔS/R
1.0027
HEA criterion (>1.0 = high entropy)
Mix Entropy ΔS
8.3366
J/mol·K
Ω Parameter
0.5861
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
27.543%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
0.2737
smaller = more stable mixing
VEC
4.667
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
-32.938
kJ/mol; negative = exothermic mixing
Entropy Norm
0.7233
SS Former
0
Phase Tendency
AM

Related Tasks

Related computation task IDs (1)

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-3319637
Reference Citation

The crystal structure and related material properties of TmNbCrB6 were obtained from the Materials Project database (MP-ID: mp-3319637, 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_TmNbCrB6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.37781549
_cell_length_b   8.92416184
_cell_length_c   11.24136772
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   TmNbCrB6
_chemical_formula_sum   'Tm4 Nb4 Cr4 B24'
_cell_volume   338.86172348
_cell_formula_units_Z   4
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
  Tm  Tm0  1  0.00000000  0.82257176  0.08566588  1.0
  Tm  Tm1  1  0.00000000  0.17742824  0.91433412  1.0
  Tm  Tm2  1  0.00000000  0.32257176  0.41433412  1.0
  Tm  Tm3  1  0.00000000  0.67742824  0.58566588  1.0
  Nb  Nb4  1  0.00000000  0.44578251  0.12741275  1.0
  Nb  Nb5  1  0.00000000  0.55421749  0.87258725  1.0
  Nb  Nb6  1  0.00000000  0.94578251  0.37258725  1.0
  Nb  Nb7  1  0.00000000  0.05421749  0.62741275  1.0
  Cr  Cr8  1  0.00000000  0.14381968  0.18318647  1.0
  Cr  Cr9  1  0.00000000  0.85618032  0.81681353  1.0
  Cr  Cr10  1  0.00000000  0.64381968  0.31681353  1.0
  Cr  Cr11  1  0.00000000  0.35618032  0.68318647  1.0
  B  B12  1  0.50000000  0.05450804  0.06668260  1.0
  B  B13  1  0.50000000  0.94549196  0.93331740  1.0
  B  B14  1  0.50000000  0.55450804  0.43331740  1.0
  B  B15  1  0.50000000  0.44549196  0.56668260  1.0
  B  B16  1  0.50000000  0.25287947  0.08142589  1.0
  B  B17  1  0.50000000  0.74712053  0.91857411  1.0
  B  B18  1  0.50000000  0.75287947  0.41857411  1.0
  B  B19  1  0.50000000  0.24712053  0.58142589  1.0
  B  B20  1  0.50000000  0.29720058  0.23711087  1.0
  B  B21  1  0.50000000  0.70279942  0.76288913  1.0
  B  B22  1  0.50000000  0.79720058  0.26288913  1.0
  B  B23  1  0.50000000  0.20279942  0.73711087  1.0
  B  B24  1  0.50000000  0.13110309  0.31812749  1.0
  B  B25  1  0.50000000  0.86889691  0.68187251  1.0
  B  B26  1  0.50000000  0.63110309  0.18187251  1.0
  B  B27  1  0.50000000  0.36889691  0.81812749  1.0
  B  B28  1  0.50000000  0.48182273  0.28728027  1.0
  B  B29  1  0.50000000  0.51817727  0.71271973  1.0
  B  B30  1  0.50000000  0.98182273  0.21271973  1.0
  B  B31  1  0.50000000  0.01817727  0.78728027  1.0
  B  B32  1  0.50000000  0.10100551  0.47341619  1.0
  B  B33  1  0.50000000  0.89899449  0.52658381  1.0
  B  B34  1  0.50000000  0.60100551  0.02658381  1.0
  B  B35  1  0.50000000  0.39899449  0.97341619  1.0
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