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Er(CrGe)6

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-1105108 · Space group: P6/mmm (#191)

Basic Information

Formula
Er(CrGe)6
MP-ID
mp-1105108
Elements
3
Sites
13
Density
8.1172
g/cm³
Volume
187.20
ų
Cell a
5.1015
Å
Cell b
5.1015
Å
Cell c
8.3058
Å
α Angle
90.00
°
β Angle
90.00
°
γ Angle
120.00
°
Space Group
P6/mmm
Point Group
6/mmm
Crystal System
Hexagonal
Bravais Lattice
Hexagonal P
Stability
No
Packing Fraction
0.7400

X-ray Diffraction

Diffraction Pattern
X-axis: 2θ (°); Y-axis: relative intensity; CuKa ; λ=1.5406 Å
Diffraction Peaks (Top 24)
2θd (Å)Ihkl
10.65 8.3058 9.8 (0,0,0,1)
20.10 4.4180 2.2 (1,-1,0,0)
20.10 4.4180 1.1 (1,0,-1,0)
21.40 4.1529 2.2 (0,0,0,2)
22.80 3.9005 11.3 (1,0,-1,1)
29.52 3.0259 4.4 (1,0,-1,2)
32.34 2.7686 12.2 (0,0,0,3)
35.18 2.5507 77.0 (2,-1,-1,0)
36.86 2.4383 3.4 (2,-1,-1,1)
38.37 2.3460 45.3 (1,0,-1,3)
40.85 2.2090 45.8 (2,0,-2,0)
41.55 2.1735 100.0 (2,-1,-1,2)
42.34 2.1348 1.5 (2,-2,0,1)
43.59 2.0764 24.4 (0,0,0,4)
46.57 1.9503 33.0 (2,0,-2,2)
48.44 1.8792 9.4 (1,0,-1,4)
48.53 1.8759 7.7 (1,-2,1,3)
48.53 1.8759 15.4 (2,-1,-1,3)
53.03 1.7267 17.9 (2,0,-2,3)
56.19 1.6371 1.0 (3,-2,-1,1)
56.19 1.6371 1.0 (3,-1,-2,1)
57.21 1.6103 9.4 (2,-1,-1,4)
59.45 1.5549 2.8 (1,0,-1,5)
59.68 1.5493 1.0 (3,-1,-2,2)
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Energy Properties

Formation Energy/atom
-0.19791
eV/atom
Energy/atom
-7.13823
eV/atom
Energy above Hull
0.0089
eV/atom
Uncorrected Energy
-7.1382
eV/atom
Volume/atom
14.40
ų
c/a Ratio
1.6281

Electronic Properties

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

Magnetic Properties

Magnetic
No
Total Mag. Moment
0.3001
μB
Mag. Ordering
NM
Mag. Sites
0
Magnetization/Volume
0.001600
μB/ų

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
Cr · 0.462
Element Family
3d-TM
Solute Fraction
0.538
Interstitial Fraction
0.000

High-Entropy Alloy Features

Composite Radar (normalized)
Element-Class Share
Mix Entropy ΔS/R
0.9110
HEA criterion (>1.0 = high entropy)
Mix Entropy ΔS
7.5742
J/mol·K
Ω Parameter
2.3883
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
9.985%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
0.2311
smaller = more stable mixing
VEC
5.538
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
5.404
kJ/mol; negative = exothermic mixing
Entropy Norm
0.8292
SS Former
0
Phase Tendency
IM

Traditional Material Features

ROM Blended-Feature Radar
Rating & Classification
Tier
B
Score
0.685
Family
Cr-rich Multi-Component
Matrix Element
Cr · 0.462

Related Tasks

Related computation task IDs (1)

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-1105108
Reference Citation

The crystal structure and related material properties of Er(CrGe)6 were obtained from the Materials Project database (MP-ID: mp-1105108, 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_Er(CrGe)6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.10146100
_cell_length_b   5.10146140
_cell_length_c   8.30576300
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   120.00000387
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Er(CrGe)6
_chemical_formula_sum   'Er1 Cr6 Ge6'
_cell_volume   187.19719010
_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
  Er  Er0  1  0.00000000  0.00000000  0.00000000  1.0
  Cr  Cr1  1  0.50000000  0.50000000  0.74974700  1.0
  Cr  Cr2  1  0.50000000  0.00000000  0.74974700  1.0
  Cr  Cr3  1  0.00000000  0.50000000  0.74974700  1.0
  Cr  Cr4  1  0.50000000  0.50000000  0.25025300  1.0
  Cr  Cr5  1  0.50000000  0.00000000  0.25025300  1.0
  Cr  Cr6  1  0.00000000  0.50000000  0.25025300  1.0
  Ge  Ge7  1  0.66666700  0.33333300  0.00000000  1.0
  Ge  Ge8  1  0.33333300  0.66666700  0.00000000  1.0
  Ge  Ge9  1  0.66666700  0.33333300  0.50000000  1.0
  Ge  Ge10  1  0.33333300  0.66666700  0.50000000  1.0
  Ge  Ge11  1  0.00000000  0.00000000  0.65456600  1.0
  Ge  Ge12  1  0.00000000  0.00000000  0.34543400  1.0
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