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Tm3(FeGe)4

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-1095685 · Space group: Immm (#71)

Basic Information

Formula
Tm3(FeGe)4
MP-ID
mp-1095685
Elements
3
Sites
11
Density
9.0586
g/cm³
Volume
187.11
ų
Cell a
7.7762
Å
Cell b
7.7762
Å
Cell c
7.7762
Å
α Angle
149.17
°
β Angle
128.42
°
γ Angle
61.31
°
Space Group
Immm
Point Group
mmm
Crystal System
Orthorhombic
Bravais Lattice
Orthorhombic I
Stability
No
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
14.67 6.0382 1.9 (1,0,0)
22.51 3.9495 10.4 (0,1,0)
23.90 3.7237 11.3 (2,1,-1)
25.25 3.5275 1.2 (0,0,1)
26.34 3.3832 18.0 (1,-1,1)
28.61 3.1203 8.3 (1,1,0)
34.92 2.5694 92.4 (1,0,1)
36.10 2.4884 31.2 (3,2,-2)
37.04 2.4272 100.0 (2,2,-1)
37.82 2.3786 1.6 (3,1,-1)
39.93 2.2578 5.8 (2,1,0)
40.14 2.2463 5.7 (2,3,-2)
40.45 2.2299 9.6 (3,3,-3)
43.80 2.0669 34.8 (1,-1,-1)
45.04 2.0127 27.9 (3,0,0)
47.92 1.8985 5.0 (2,0,1)
48.66 1.8714 7.9 (3,2,-1)
49.56 1.8394 3.3 (4,3,-3)
50.50 1.8071 3.3 (1,2,0)
51.84 1.7638 6.0 (0,0,2)
53.11 1.7246 8.2 (4,1,-1)
53.80 1.7038 13.3 (3,1,0)
54.22 1.6916 7.5 (2,-2,2)
54.90 1.6724 4.0 (4,4,-4)
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Energy Properties

Formation Energy/atom
-0.49129
eV/atom
Energy/atom
-6.47490
eV/atom
Energy above Hull
0.0236
eV/atom
Uncorrected Energy
-6.4749
eV/atom
Volume/atom
17.01
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
7.8143
μB
Mag. Ordering
FiM
Mag. Sites
7
Magnetization/Volume
0.041760
μB/ų

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
Fe · 0.364
Element Family
3d-TM
Solute Fraction
0.636
Interstitial Fraction
0.000

High-Entropy Alloy Features

Composite Radar (normalized)
Element-Class Share
Mix Entropy ΔS/R
1.0901
HEA criterion (>1.0 = high entropy)
Mix Entropy ΔS
9.0628
J/mol·K
Ω Parameter
3.2174
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
15.863%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
0.3081
smaller = more stable mixing
VEC
7.909
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
4.492
kJ/mol; negative = exothermic mixing
Entropy Norm
0.9922
SS Former
0
Phase Tendency
IM

Traditional Material Features

ROM Blended-Feature Radar
Rating & Classification
Tier
B
Score
0.558
Family
Fe-rich Multi-Component
Matrix Element
Fe · 0.364

Related Tasks

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-1095685
Reference Citation

The crystal structure and related material properties of Tm3(FeGe)4 were obtained from the Materials Project database (MP-ID: mp-1095685, 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_Tm3(FeGe)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.77621229
_cell_length_b   7.77621229
_cell_length_c   7.77621229
_cell_angle_alpha   149.17196250
_cell_angle_beta   128.42013835
_cell_angle_gamma   61.30594890
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Tm3(FeGe)4
_chemical_formula_sum   'Tm3 Fe4 Ge4'
_cell_volume   187.11280465
_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
  Tm  Tm0  1  0.50000000  0.00000000  0.50000000  1.0
  Tm  Tm1  1  0.87314700  0.87314700  0.00000000  1.0
  Tm  Tm2  1  0.12685300  0.12685300  0.00000000  1.0
  Fe  Fe3  1  0.49460400  0.67626100  0.81834300  1.0
  Fe  Fe4  1  0.85791800  0.67626100  0.18165700  1.0
  Fe  Fe5  1  0.14208200  0.32373900  0.81834300  1.0
  Fe  Fe6  1  0.50539600  0.32373900  0.18165700  1.0
  Ge  Ge7  1  0.27793600  0.77793600  0.50000000  1.0
  Ge  Ge8  1  0.72206400  0.22206400  0.50000000  1.0
  Ge  Ge9  1  0.80297900  0.50000000  0.30297900  1.0
  Ge  Ge10  1  0.19702100  0.50000000  0.69702100  1.0
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