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Ni5(AsO6)2

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-1105634 · Space group: C2/m (#12)

Basic Information

Formula
Ni5(AsO6)2
MP-ID
mp-1105634
Elements
3
Sites
19
Density
4.9793
g/cm³
Volume
211.87
ų
Cell a
6.4617
Å
Cell b
6.4617
Å
Cell c
5.1193
Å
α Angle
85.06
°
β Angle
85.06
°
γ Angle
86.56
°
Space Group
C2/m
Point Group
2/m
Crystal System
Monoclinic
Bravais Lattice
Monoclinic C
Stability
No
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
17.45 5.0834 14.4 (0,0,1)
19.00 4.6712 88.1 (1,1,0)
20.04 4.4299 9.5 (1,-1,0)
21.38 4.1553 4.8 (1,0,1)
23.17 3.8384 4.0 (1,0,-1)
24.31 3.6620 16.6 (1,1,1)
26.69 3.3397 5.4 (1,-1,1)
27.42 3.2532 30.4 (1,1,-1)
27.75 3.2143 40.9 (2,0,0)
30.43 2.9379 44.0 (2,1,0)
31.70 2.8225 15.0 (2,0,1)
33.48 2.6763 30.8 (2,1,1)
34.20 2.6221 28.9 (2,0,-1)
35.31 2.5417 56.0 (0,0,2)
35.90 2.5013 100.0 (2,-1,1)
36.96 2.4323 2.7 (1,0,2)
37.01 2.4290 13.7 (2,1,-1)
37.04 2.4269 10.5 (2,-1,-1)
38.26 2.3524 3.5 (1,1,2)
38.55 2.3356 4.6 (2,2,0)
39.16 2.3005 3.3 (1,0,-2)
40.56 2.2244 2.2 (2,2,1)
40.74 2.2150 2.0 (2,-2,0)
40.94 2.2046 1.2 (1,-1,2)
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Energy Properties

Formation Energy/atom
-1.23701
eV/atom
Energy/atom
-6.37472
eV/atom
Energy above Hull
0.0746
eV/atom
Uncorrected Energy
-5.2721
eV/atom
Volume/atom
11.15
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
5.9999
μB
Mag. Ordering
FiM
Mag. Sites
9
Magnetization/Volume
0.028320
μB/ų

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
O · 0.632
Element Family
Metalloid-Nonmetal
Solute Fraction
0.368
Interstitial Fraction
0.000

High-Entropy Alloy Features

Composite Radar (normalized)
Element-Class Share
Mix Entropy ΔS/R
0.8785
HEA criterion (>1.0 = high entropy)
Mix Entropy ΔS
7.3041
J/mol·K
Ω Parameter
0.0000
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
35.984%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
0.7047
smaller = more stable mixing
VEC
5.474
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
0.000
kJ/mol; negative = exothermic mixing
Entropy Norm
0.7997
SS Former
0
Phase Tendency
IM

Traditional Material Features

ROM Blended-Feature Radar
Rating & Classification
Tier
B
Score
0.537
Family
O-rich Multi-Component
Matrix Element
O · 0.632

Related Tasks

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-1105634
Reference Citation

The crystal structure and related material properties of Ni5(AsO6)2 were obtained from the Materials Project database (MP-ID: mp-1105634, 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_Ni5(AsO6)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.46169437
_cell_length_b   6.46169437
_cell_length_c   5.11925272
_cell_angle_alpha   85.06233773
_cell_angle_beta   85.06233773
_cell_angle_gamma   86.56061422
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ni5(AsO6)2
_chemical_formula_sum   'Ni5 As2 O12'
_cell_volume   211.86524557
_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
  Ni  Ni0  1  0.17706700  0.82293300  0.00000000  1.0
  Ni  Ni1  1  0.82293300  0.17706700  0.00000000  1.0
  Ni  Ni2  1  0.33768700  0.66231300  0.50000000  1.0
  Ni  Ni3  1  0.66231300  0.33768700  0.50000000  1.0
  Ni  Ni4  1  0.00000000  0.00000000  0.50000000  1.0
  As  As5  1  0.68388400  0.68388400  0.94667200  1.0
  As  As6  1  0.31611600  0.31611600  0.05332800  1.0
  O  O7  1  0.21072100  0.52864900  0.87647600  1.0
  O  O8  1  0.52864900  0.21072100  0.87647600  1.0
  O  O9  1  0.78927900  0.47135100  0.12352400  1.0
  O  O10  1  0.47135100  0.78927900  0.12352400  1.0
  O  O11  1  0.87224200  0.87224200  0.88996900  1.0
  O  O12  1  0.12775800  0.12775800  0.11003100  1.0
  O  O13  1  0.62334500  0.62334500  0.63685500  1.0
  O  O14  1  0.37665500  0.37665500  0.36314500  1.0
  O  O15  1  0.07716100  0.74241700  0.35879000  1.0
  O  O16  1  0.74241700  0.07716100  0.35879000  1.0
  O  O17  1  0.92283900  0.25758300  0.64121000  1.0
  O  O18  1  0.25758300  0.92283900  0.64121000  1.0
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