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Tm20IrPt10Rh

High-Entropy Materials HEA

MP-ID: mp-3291567 · Space group: P4 (#75)

Basic Information

Formula
Tm20IrPt10Rh
MP-ID
mp-3291567
Elements
4
Sites
32
Density
12.6501
g/cm³
Volume
738.33
ų
Cell a
10.8115
Å
Cell b
10.8115
Å
Cell c
6.3166
Å
α Angle
90.00
°
β Angle
90.00
°
γ Angle
90.00
°
Space Group
P4
Point Group
4
Crystal System
Tetragonal
Bravais Lattice
Tetragonal P
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
8.18 10.8115 1.1 (1,0,0)
11.58 7.6449 1.8 (1,1,0)
16.40 5.4057 3.3 (2,0,0)
23.17 3.8394 33.4 (2,1,1)
23.27 3.8224 5.5 (2,2,0)
28.26 3.1583 3.5 (0,0,2)
29.46 3.0316 15.9 (1,0,2)
29.71 3.0067 72.8 (3,1,1)
32.84 2.7270 27.1 (2,0,2)
33.07 2.7088 66.4 (3,2,1)
33.90 2.6442 70.7 (2,1,2)
35.22 2.5483 11.6 (3,3,0)
36.92 2.4347 3.2 (2,2,2)
37.12 2.4218 100.0 (4,1,1)
37.19 2.4175 91.7 (4,2,0)
37.88 2.3752 37.4 (3,0,2)
38.82 2.3199 49.8 (3,1,2)
39.93 2.2578 28.1 (4,2,1)
41.53 2.1746 19.0 (3,2,2)
42.64 2.1203 3.9 (5,1,0)
44.10 2.0535 26.7 (4,0,2)
44.28 2.0458 5.1 (4,3,1)
44.93 2.0175 2.1 (4,1,2)
45.75 1.9832 4.8 (3,3,2)
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Energy Properties

Formation Energy/atom
-1.15685
eV/atom
Energy/atom
-41.58790
eV/atom
Energy above Hull
0.0000
eV/atom
Uncorrected Energy
-41.5879
eV/atom
Volume/atom
23.07
ų
c/a Ratio
0.5842

Electronic Properties

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

Magnetic Properties

Magnetic
Yes
Total Mag. Moment
0.2381
μB
Mag. Ordering
FM
Mag. Sites
8
Magnetization/Volume
0.000320
μB/ų

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
Tm · 0.625
Element Family
Lanthanide
Solute Fraction
0.375
Interstitial Fraction
0.000

High-Entropy Alloy Features

Composite Radar (normalized)
Element-Class Share
Mix Entropy ΔS/R
0.8738
HEA criterion (>1.0 = high entropy)
Mix Entropy ΔS
7.2652
J/mol·K
Ω Parameter
7.1775
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
11.024%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
0.4956
smaller = more stable mixing
VEC
11.813
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
-1.953
kJ/mol; negative = exothermic mixing
Entropy Norm
0.6303
SS Former
0
Phase Tendency
IM

Related Tasks

Related computation task IDs (1)

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-3291567
Reference Citation

The crystal structure and related material properties of Tm20IrPt10Rh were obtained from the Materials Project database (MP-ID: mp-3291567, 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_Tm20IrPt10Rh
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.81146385
_cell_length_b   10.81146385
_cell_length_c   6.31659210
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Tm20IrPt10Rh
_chemical_formula_sum   'Tm20 Ir1 Pt10 Rh1'
_cell_volume   738.33224142
_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  0.29230458  0.08797332  0.37741717  1.0
  Tm  Tm1  1  0.29261837  0.91095277  0.87720589  1.0
  Tm  Tm2  1  0.70738163  0.08904723  0.87720589  1.0
  Tm  Tm3  1  0.70769542  0.91202668  0.37741717  1.0
  Tm  Tm4  1  0.58904723  0.79261837  0.87720589  1.0
  Tm  Tm5  1  0.58797332  0.20769542  0.37741717  1.0
  Tm  Tm6  1  0.41202668  0.79230458  0.37741717  1.0
  Tm  Tm7  1  0.41095277  0.20738163  0.87720589  1.0
  Tm  Tm8  1  0.20485719  0.41270354  0.62095939  1.0
  Tm  Tm9  1  0.20543477  0.58753132  0.12417187  1.0
  Tm  Tm10  1  0.79456523  0.41246868  0.12417187  1.0
  Tm  Tm11  1  0.79514281  0.58729646  0.62095939  1.0
  Tm  Tm12  1  0.91246868  0.70543477  0.12417187  1.0
  Tm  Tm13  1  0.91270354  0.29514281  0.62095939  1.0
  Tm  Tm14  1  0.08729646  0.70485719  0.62095939  1.0
  Tm  Tm15  1  0.08753132  0.29456523  0.12417187  1.0
  Tm  Tm16  1  0.00000000  0.00000000  0.50163115  1.0
  Tm  Tm17  1  0.00000000  0.00000000  0.00146159  1.0
  Tm  Tm18  1  0.50000000  0.50000000  0.00146159  1.0
  Tm  Tm19  1  0.50000000  0.50000000  0.50163115  1.0
  Ir  Ir20  1  0.00000000  0.50000000  0.37673286  1.0
  Pt  Pt21  1  0.84513475  0.15313313  0.25068201  1.0
  Pt  Pt22  1  0.84633038  0.84581176  0.75055540  1.0
  Pt  Pt23  1  0.15366962  0.15418824  0.75055540  1.0
  Pt  Pt24  1  0.15486525  0.84686687  0.25068201  1.0
  Pt  Pt25  1  0.65418824  0.34633038  0.75055540  1.0
  Pt  Pt26  1  0.65313313  0.65486525  0.25068201  1.0
  Pt  Pt27  1  0.34686687  0.34513475  0.25068201  1.0
  Pt  Pt28  1  0.34581176  0.65366962  0.75055540  1.0
  Pt  Pt29  1  0.50000000  0.00000000  0.11747528  1.0
  Pt  Pt30  1  0.50000000  0.00000000  0.61761268  1.0
  Rh  Rh31  1  0.00000000  0.50000000  0.87802382  1.0
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