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Sc2Ta3Ge4

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-3292143 · Space group: Pnma (#62)

Basic Information

Formula
Sc2Ta3Ge4
MP-ID
mp-3292143
Elements
3
Sites
36
Density
9.7528
g/cm³
Volume
628.82
ų
Cell a
6.8186
Å
Cell b
6.9857
Å
Cell c
13.2016
Å
α Angle
90.00
°
β Angle
90.00
°
γ Angle
90.00
°
Space Group
Pnma
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
13.41 6.6008 46.6 (0,0,2)
14.34 6.1745 100.0 (0,1,1)
18.18 4.8795 44.7 (1,1,0)
19.39 4.5769 2.6 (1,1,1)
23.90 3.7234 23.0 (0,1,3)
25.50 3.4928 1.1 (0,2,0)
26.14 3.4093 19.1 (2,0,0)
27.01 3.3010 2.5 (2,0,1)
27.29 3.2679 14.3 (1,1,3)
28.72 3.1087 7.6 (1,2,0)
28.92 3.0873 2.4 (0,2,2)
29.15 3.0639 22.0 (2,1,0)
29.52 3.0259 6.8 (1,2,1)
29.94 2.9846 3.2 (2,1,1)
32.21 2.7791 2.9 (2,1,2)
33.24 2.6951 32.0 (2,0,3)
35.35 2.5390 56.3 (1,2,3)
35.71 2.5145 41.8 (2,1,3)
36.38 2.4698 13.9 (0,1,5)
36.84 2.4397 5.7 (2,2,0)
37.49 2.3991 60.4 (2,2,1)
37.49 2.3989 65.7 (0,2,4)
37.94 2.3713 1.3 (2,0,4)
38.78 2.3222 56.0 (1,1,5)
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Energy Properties

Formation Energy/atom
-0.67986
eV/atom
Energy/atom
-25.57546
eV/atom
Energy above Hull
0.0000
eV/atom
Uncorrected Energy
-25.5755
eV/atom
Volume/atom
17.47
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
0.0008
μB
Mag. Ordering
NM
Mag. Sites
0
Magnetization/Volume
0.000000
μB/ų

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
Ge · 0.444
Element Family
PostTransition-Noble
Solute Fraction
0.556
Interstitial Fraction
0.000

High-Entropy Alloy Features

Composite Radar (normalized)
Element-Class Share
Mix Entropy ΔS/R
1.0609
HEA criterion (>1.0 = high entropy)
Mix Entropy ΔS
8.8200
J/mol·K
Ω Parameter
0.8392
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
10.566%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
0.2859
smaller = more stable mixing
VEC
4.111
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
-21.421
kJ/mol; negative = exothermic mixing
Entropy Norm
0.9656
SS Former
0
Phase Tendency
AM

Traditional Material Features

ROM Blended-Feature Radar
Rating & Classification
Tier
B
Score
0.482
Family
Ge-rich Multi-Component
Matrix Element
Ge · 0.444

Related Tasks

Related computation task IDs (1)

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-3292143
Reference Citation

The crystal structure and related material properties of Sc2Ta3Ge4 were obtained from the Materials Project database (MP-ID: mp-3292143, 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_Sc2Ta3Ge4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.81861364
_cell_length_b   6.98566520
_cell_length_c   13.20155883
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sc2Ta3Ge4
_chemical_formula_sum   'Sc8 Ta12 Ge16'
_cell_volume   628.82393714
_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
  Sc  Sc0  1  0.49039346  0.67631952  0.59444889  1.0
  Sc  Sc1  1  0.99039346  0.82368048  0.90555111  1.0
  Sc  Sc2  1  0.50960654  0.32368048  0.09444889  1.0
  Sc  Sc3  1  0.00960654  0.17631952  0.40555111  1.0
  Sc  Sc4  1  0.50960654  0.32368048  0.40555111  1.0
  Sc  Sc5  1  0.00960654  0.17631952  0.09444889  1.0
  Sc  Sc6  1  0.49039346  0.67631952  0.90555111  1.0
  Sc  Sc7  1  0.99039346  0.82368048  0.59444889  1.0
  Ta  Ta8  1  0.65542487  0.17145647  0.62592459  1.0
  Ta  Ta9  1  0.15542487  0.32854353  0.87407541  1.0
  Ta  Ta10  1  0.34457513  0.82854353  0.12592459  1.0
  Ta  Ta11  1  0.84457513  0.67145647  0.37407541  1.0
  Ta  Ta12  1  0.34457513  0.82854353  0.37407541  1.0
  Ta  Ta13  1  0.84457513  0.67145647  0.12592459  1.0
  Ta  Ta14  1  0.65542487  0.17145647  0.87407541  1.0
  Ta  Ta15  1  0.15542487  0.32854353  0.62592459  1.0
  Ta  Ta16  1  0.83141365  0.48846009  0.75000000  1.0
  Ta  Ta17  1  0.33141365  0.01153991  0.75000000  1.0
  Ta  Ta18  1  0.16858635  0.51153991  0.25000000  1.0
  Ta  Ta19  1  0.66858635  0.98846009  0.25000000  1.0
  Ge  Ge20  1  0.68416133  0.96555663  0.46032149  1.0
  Ge  Ge21  1  0.18416133  0.53444337  0.03967851  1.0
  Ge  Ge22  1  0.31583867  0.03444337  0.96032149  1.0
  Ge  Ge23  1  0.81583867  0.46555663  0.53967851  1.0
  Ge  Ge24  1  0.31583867  0.03444337  0.53967851  1.0
  Ge  Ge25  1  0.81583867  0.46555663  0.96032149  1.0
  Ge  Ge26  1  0.68416133  0.96555663  0.03967851  1.0
  Ge  Ge27  1  0.18416133  0.53444337  0.46032149  1.0
  Ge  Ge28  1  0.45533248  0.38912422  0.75000000  1.0
  Ge  Ge29  1  0.95533248  0.11087578  0.75000000  1.0
  Ge  Ge30  1  0.54466752  0.61087578  0.25000000  1.0
  Ge  Ge31  1  0.04466752  0.88912422  0.25000000  1.0
  Ge  Ge32  1  0.68940940  0.85191373  0.75000000  1.0
  Ge  Ge33  1  0.18940940  0.64808627  0.75000000  1.0
  Ge  Ge34  1  0.31059060  0.14808627  0.25000000  1.0
  Ge  Ge35  1  0.81059060  0.35191373  0.25000000  1.0
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