Navigation

HEAS Data Platform · Materials Science Database

CaNiGeH

High-Entropy Materials HEA

MP-ID: mp-1095188 · Space group: P4/nmm (#129)

Basic Information

Formula
CaNiGeH
MP-ID
mp-1095188
Elements
4
Sites
8
Density
4.5511
g/cm³
Volume
125.82
ų
Cell a
4.0163
Å
Cell b
4.0163
Å
Cell c
7.8003
Å
α Angle
90.00
°
β Angle
90.00
°
γ Angle
90.00
°
Space Group
P4/nmm
Point Group
4/mmm
Crystal System
Tetragonal
Bravais Lattice
Tetragonal P
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
11.34 7.8003 100.0 (0,0,1)
22.80 3.9001 1.9 (0,0,2)
24.94 3.5707 8.0 (1,0,1)
31.50 2.8399 7.4 (1,1,0)
31.99 2.7980 66.0 (1,0,2)
33.58 2.6686 10.6 (1,1,1)
34.49 2.6001 1.0 (0,0,3)
39.24 2.2958 37.6 (1,1,2)
45.15 2.0081 34.6 (2,0,0)
46.71 1.9447 12.5 (2,0,1)
47.41 1.9177 17.5 (1,1,3)
52.14 1.7542 8.5 (1,0,4)
52.26 1.7503 2.4 (2,1,1)
56.40 1.6314 24.4 (2,1,2)
57.31 1.6076 22.1 (1,1,4)
59.23 1.5601 1.4 (0,0,5)
65.76 1.4200 10.5 (2,2,0)
66.99 1.3970 4.1 (2,2,1)
68.64 1.3673 1.3 (1,1,5)
71.40 1.3211 6.3 (2,1,4)
72.74 1.3000 3.4 (0,0,6)
74.75 1.2701 1.2 (3,1,0)
75.01 1.2662 5.0 (3,0,2)
75.90 1.2535 1.5 (3,1,1)
Get direct link

Energy Properties

Formation Energy/atom
-0.56358
eV/atom
Energy/atom
-4.51456
eV/atom
Energy above Hull
0.0302
eV/atom
Uncorrected Energy
-4.4698
eV/atom
Volume/atom
15.73
ų
c/a Ratio
1.9422

Electronic Properties

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

Magnetic Properties

Magnetic
No
Total Mag. Moment
0.0058
μB
Mag. Ordering
NM
Mag. Sites
0
Magnetization/Volume
0.000050
μB/ų

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
Ca · 0.250
Element Family
Alkali-AlkEarth
Solute Fraction
0.750
Interstitial Fraction
0.000

High-Entropy Alloy Features

Composite Radar (normalized)
Element-Class Share
Mix Entropy ΔS/R
1.3863
HEA criterion (>1.0 = high entropy)
Mix Entropy ΔS
11.5257
J/mol·K
Ω Parameter
0.7357
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
51.962%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
0.4622
smaller = more stable mixing
VEC
4.250
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
-15.933
kJ/mol; negative = exothermic mixing
Entropy Norm
1.0000
SS Former
0
Phase Tendency
AM

Related Tasks

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-1095188
Reference Citation

The crystal structure and related material properties of CaNiGeH were obtained from the Materials Project database (MP-ID: mp-1095188, 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_CaNiGeH
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.01625600
_cell_length_b   4.01625600
_cell_length_c   7.80025200
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CaNiGeH
_chemical_formula_sum   'Ca2 Ni2 Ge2 H2'
_cell_volume   125.82050045
_cell_formula_units_Z   2
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
  Ca  Ca0  1  0.00000000  0.50000000  0.84857400  1.0
  Ca  Ca1  1  0.50000000  0.00000000  0.15142600  1.0
  Ni  Ni2  1  0.00000000  0.00000000  0.50000000  1.0
  Ni  Ni3  1  0.50000000  0.50000000  0.50000000  1.0
  Ge  Ge4  1  0.00000000  0.50000000  0.34299500  1.0
  Ge  Ge5  1  0.50000000  0.00000000  0.65700500  1.0
  H  H6  1  0.00000000  0.00000000  0.00000000  1.0
  H  H7  1  0.50000000  0.50000000  0.00000000  1.0
Get direct link