Ho10In20Ni9

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-30729 · Space group: P4/nmm (#129)

Materials Project API

Basic Information

Formula

Ho10In20Ni9

MP-ID

mp-30729

Elements

Sites

Density

9.2519

g/cm³

Volume

1,605.96

Å³

Cell a

13.2839

Cell b

13.2839

Cell c

9.1009

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

Stability

Yes

Packing Fraction

X-ray Diffraction

Diffraction Pattern

Target / Radiation

X-axis: 2θ (°); Y-axis: relative intensity; Cu Kα ; λ=1.5418 Å

Diffraction Peaks (Top 24)

2θ	d (Å)	I	hkl
19.51	4.5505	1.4	(0,0,2)
21.15	4.2007	1.2	(3,1,0)
22.33	3.9817	3.4	(3,0,1)
26.09	3.4151	10.4	(3,2,1)
28.12	3.1735	5.2	(3,0,2)
28.51	3.1310	3.8	(3,3,0)
28.61	3.1198	4.2	(4,0,1)
28.93	3.0866	2.9	(3,1,2)
29.41	3.0371	4.1	(4,1,1)
30.19	2.9607	10.5	(3,3,1)
31.24	2.8634	17.2	(3,2,2)
32.45	2.7594	3.3	(2,0,3)
33.40	2.6826	74.4	(4,0,2)
34.10	2.6295	24.7	(4,1,2)
34.43	2.6052	6.2	(5,1,0)
34.78	2.5794	77.5	(3,3,2)
35.19	2.5503	100.0	(5,0,1)
35.22	2.5483	4.0	(2,2,3)
35.88	2.5026	35.0	(3,0,3)
36.11	2.4873	10.0	(4,2,2)
37.79	2.3809	1.4	(5,2,1)
38.33	2.3483	27.0	(4,4,0)
38.44	2.3419	51.9	(3,2,3)
39.27	2.2944	14.7	(4,3,2)

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Energy Properties

Formation Energy/atom

-0.41769

eV/atom

Energy/atom

-4.34542

eV/atom

Energy above Hull

0.0000

eV/atom

Uncorrected Energy

-23.2934

eV/atom

Volume/atom

20.59

Å³

c/a Ratio

0.6851

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Total Mag. Moment

0.0000

μB

Mag. Ordering

Mag. Sites

Magnetization/Volume

0.000000

μB/Å³

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)

Composition Info

Major / Matrix Element

In · 0.513

Element Family

PostTransition-Noble

Solute Fraction

0.487

Interstitial Fraction

0.000

High-Entropy Alloy Features

Composite Radar (normalized)

Element-Class Share

Mix Entropy ΔS/R

1.0298

HEA criterion (>1.0 = high entropy)

Mix Entropy ΔS

8.5620

J/mol·K

Ω Parameter

0.8746

Ω > 1.1 favors solid solution

Atomic Size Mismatch δr

12.269%

δr < 6.6% favors single-phase solid solution

Electronegativity Diff Δχ

0.2629

smaller = more stable mixing

VEC

6.667

valence electron concentration, affects phase stability

Mix Enthalpy ΔH_mix

-10.414

kJ/mol; negative = exothermic mixing

Entropy Norm

0.9374

SS Former

Phase Tendency

Traditional Material Features

ROM Blended-Feature Radar

Rating & Classification

Tier

Score

0.474

Family

In-rich Multi-Component

Matrix Element

In · 0.513

Related Tasks

Related computation task IDs (2)

aaacbrri aaagjrvh

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-30729

Reference Citation

The crystal structure and related material properties of Ho10In20Ni9 were obtained from the Materials Project database (MP-ID: mp-30729, 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

3D Crystal Structure Rendering

Loading 3D structure…

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Raw CIF Data

# generated using pymatgen
data_Ho10In20Ni9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.28388074
_cell_length_b   13.28388074
_cell_length_c   9.10091797
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ho10In20Ni9
_chemical_formula_sum   'Ho20 In40 Ni18'
_cell_volume   1605.96152273
_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
  Ho  Ho0  1  -0.00000000  0.50000000  0.36265271  1.0
  Ho  Ho1  1  0.50000000  0.00000000  0.63734729  1.0
  Ho  Ho2  1  -0.00000000  0.50000000  0.83490223  1.0
  Ho  Ho3  1  0.50000000  0.00000000  0.16509777  1.0
  Ho  Ho4  1  0.27680043  0.50000000  0.76792351  1.0
  Ho  Ho5  1  -0.00000000  0.22319957  0.76792351  1.0
  Ho  Ho6  1  -0.00000000  0.77680043  0.76792351  1.0
  Ho  Ho7  1  0.72319957  0.50000000  0.76792351  1.0
  Ho  Ho8  1  0.22319957  0.00000000  0.23207649  1.0
  Ho  Ho9  1  0.77680043  0.00000000  0.23207649  1.0
  Ho  Ho10  1  0.50000000  0.27680043  0.23207649  1.0
  Ho  Ho11  1  0.50000000  0.72319957  0.23207649  1.0
  Ho  Ho12  1  0.20332708  0.70332708  0.26828838  1.0
  Ho  Ho13  1  0.20332708  0.29667292  0.26828838  1.0
  Ho  Ho14  1  0.79667292  0.70332708  0.26828838  1.0
  Ho  Ho15  1  0.79667292  0.29667292  0.26828838  1.0
  Ho  Ho16  1  0.29667292  0.20332708  0.73171162  1.0
  Ho  Ho17  1  0.70332708  0.79667292  0.73171162  1.0
  Ho  Ho18  1  0.70332708  0.20332708  0.73171162  1.0
  Ho  Ho19  1  0.29667292  0.79667292  0.73171162  1.0
  In  In20  1  0.84472189  0.84472189  -0.00000000  1.0
  In  In21  1  0.34472189  0.65527811  -0.00000000  1.0
  In  In22  1  0.65527811  0.34472189  -0.00000000  1.0
  In  In23  1  0.15527811  0.15527811  -0.00000000  1.0
  In  In24  1  0.65527811  0.65527811  -0.00000000  1.0
  In  In25  1  0.15527811  0.84472189  -0.00000000  1.0
  In  In26  1  0.84472189  0.15527811  -0.00000000  1.0
  In  In27  1  0.34472189  0.34472189  -0.00000000  1.0
  In  In28  1  0.36983998  0.36983998  0.50000000  1.0
  In  In29  1  0.86983998  0.13016002  0.50000000  1.0
  In  In30  1  0.13016002  0.86983998  0.50000000  1.0
  In  In31  1  0.63016002  0.63016002  0.50000000  1.0
  In  In32  1  0.13016002  0.13016002  0.50000000  1.0
  In  In33  1  0.63016002  0.36983998  0.50000000  1.0
  In  In34  1  0.36983998  0.63016002  0.50000000  1.0
  In  In35  1  0.86983998  0.86983998  0.50000000  1.0
  In  In36  1  0.83340681  0.50000000  0.09208340  1.0
  In  In37  1  -0.00000000  0.66659319  0.09208340  1.0
  In  In38  1  -0.00000000  0.33340681  0.09208340  1.0
  In  In39  1  0.16659319  0.50000000  0.09208340  1.0
  In  In40  1  0.66659319  0.00000000  0.90791660  1.0
  In  In41  1  0.33340681  0.00000000  0.90791660  1.0
  In  In42  1  0.50000000  0.83340681  0.90791660  1.0
  In  In43  1  0.50000000  0.16659319  0.90791660  1.0
  In  In44  1  0.61639517  0.50000000  0.23398273  1.0
  In  In45  1  -0.00000000  0.88360483  0.23398273  1.0
  In  In46  1  -0.00000000  0.11639517  0.23398273  1.0
  In  In47  1  0.38360483  0.50000000  0.23398273  1.0
  In  In48  1  0.88360483  0.00000000  0.76601727  1.0
  In  In49  1  0.11639517  0.00000000  0.76601727  1.0
  In  In50  1  0.50000000  0.61639517  0.76601727  1.0
  In  In51  1  0.50000000  0.38360483  0.76601727  1.0
  In  In52  1  0.13206571  0.63206571  0.58958657  1.0
  In  In53  1  0.13206571  0.36793429  0.58958657  1.0
  In  In54  1  0.86793429  0.63206571  0.58958657  1.0
  In  In55  1  0.86793429  0.36793429  0.58958657  1.0
  In  In56  1  0.36793429  0.13206571  0.41041343  1.0
  In  In57  1  0.63206571  0.86793429  0.41041343  1.0
  In  In58  1  0.63206571  0.13206571  0.41041343  1.0
  In  In59  1  0.36793429  0.86793429  0.41041343  1.0
  Ni  Ni60  1  0.50000000  0.50000000  -0.00000000  1.0
  Ni  Ni61  1  -0.00000000  0.00000000  -0.00000000  1.0
  Ni  Ni62  1  0.77618052  0.50000000  0.40991251  1.0
  Ni  Ni63  1  -0.00000000  0.72381948  0.40991251  1.0
  Ni  Ni64  1  -0.00000000  0.27618052  0.40991251  1.0
  Ni  Ni65  1  0.22381948  0.50000000  0.40991251  1.0
  Ni  Ni66  1  0.72381948  0.00000000  0.59008749  1.0
  Ni  Ni67  1  0.27618052  0.00000000  0.59008749  1.0
  Ni  Ni68  1  0.50000000  0.77618052  0.59008749  1.0
  Ni  Ni69  1  0.50000000  0.22381948  0.59008749  1.0
  Ni  Ni70  1  0.34467059  0.84467059  0.10406114  1.0
  Ni  Ni71  1  0.34467059  0.15532941  0.10406114  1.0
  Ni  Ni72  1  0.65532941  0.84467059  0.10406114  1.0
  Ni  Ni73  1  0.65532941  0.15532941  0.10406114  1.0
  Ni  Ni74  1  0.15532941  0.34467059  0.89593886  1.0
  Ni  Ni75  1  0.84467059  0.65532941  0.89593886  1.0
  Ni  Ni76  1  0.84467059  0.34467059  0.89593886  1.0
  Ni  Ni77  1  0.15532941  0.65532941  0.89593886  1.0

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