Ho10Zn3Co

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-3292768 · Space group: P6_3/mmc (#194)

Materials Project API

Basic Information

Formula

Ho10Zn3Co

MP-ID

mp-3292768

Elements

Sites

Density

8.9355

g/cm³

Volume

707.84

Å³

Cell a

9.2910

Cell b

9.2910

Cell c

9.4685

α Angle

90.00

β Angle

90.00

γ Angle

120.00

Space Group

P6_3/mmc

Point Group

6/mmm

Crystal System

Hexagonal

Bravais Lattice

Stability

Yes

Packing Fraction

0.7405

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
11.00	8.0462	1.4	(1,0,-1,0)
14.45	6.1314	1.4	(1,0,-1,1)
21.78	4.0804	7.2	(1,0,-1,2)
29.13	3.0657	20.2	(2,0,-2,2)
29.37	3.0412	5.4	(1,2,-3,0)
29.37	3.0412	26.8	(3,-1,-2,0)
30.42	2.9382	39.3	(1,0,-1,3)
30.88	2.8955	8.4	(3,-1,-2,1)
33.41	2.6821	15.5	(3,0,-3,0)
34.76	2.5805	65.9	(3,0,-3,1)
35.07	2.5587	100.0	(3,-1,-2,2)
36.17	2.4832	36.4	(2,0,-2,3)
38.01	2.3671	9.0	(0,0,0,4)
38.77	2.3227	9.3	(2,2,-4,0)
38.77	2.3227	4.6	(4,-2,-2,0)
41.22	2.1900	7.6	(3,-1,-2,3)
44.32	2.0438	1.1	(3,0,-3,3)
44.40	2.0402	8.4	(2,0,-2,4)
44.90	2.0186	1.4	(4,-1,-3,2)
45.07	2.0116	1.5	(4,0,-4,0)
49.22	1.8514	2.5	(4,0,-4,2)
49.22	1.8514	1.3	(4,-4,0,2)
49.37	1.8459	2.5	(5,-2,-3,0)
49.44	1.8433	2.7	(1,0,-1,5)

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Energy Properties

Formation Energy/atom

-0.21597

eV/atom

Energy/atom

-26.55736

eV/atom

Energy above Hull

0.0000

eV/atom

Uncorrected Energy

-26.5574

eV/atom

Volume/atom

25.28

Å³

c/a Ratio

1.0191

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Yes

Total Mag. Moment

1.3268

μB

Mag. Ordering

FiM

Mag. Sites

Magnetization/Volume

0.001870

μB/Å³

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)

Composition Info

Major / Matrix Element

Ho · 0.714

Element Family

Lanthanide

Solute Fraction

0.286

Interstitial Fraction

0.000

High-Entropy Alloy Features

Composite Radar (normalized)

Element-Class Share

Mix Entropy ΔS/R

0.7589

HEA criterion (>1.0 = high entropy)

Mix Entropy ΔS

6.3098

J/mol·K

Ω Parameter

58.7464

Ω > 1.1 favors solid solution

Atomic Size Mismatch δr

12.081%

δr < 6.6% favors single-phase solid solution

Electronegativity Diff Δχ

0.2222

smaller = more stable mixing

VEC

11.071

valence electron concentration, affects phase stability

Mix Enthalpy ΔH_mix

-0.163

kJ/mol; negative = exothermic mixing

Entropy Norm

0.6908

SS Former

Phase Tendency

Traditional Material Features

ROM Blended-Feature Radar

Rating & Classification

Tier

Score

0.669

Family

Ho-rich Multi-Component

Matrix Element

Ho · 0.714

Related Tasks

Related computation task IDs (1)

aaahfiyy

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-3292768

Reference Citation

The crystal structure and related material properties of Ho10Zn3Co were obtained from the Materials Project database (MP-ID: mp-3292768, 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

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Raw CIF Data

# generated using pymatgen
data_Ho10Zn3Co
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.29096150
_cell_length_b   9.29096180
_cell_length_c   9.46851099
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   119.99999542
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ho10Zn3Co
_chemical_formula_sum   'Ho20 Zn6 Co2'
_cell_volume   707.83767535
_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  0.00000000  0.50000000  1.0
  Ho  Ho1  1  0.00000000  0.00000000  0.00000000  1.0
  Ho  Ho2  1  0.54278369  0.45721631  0.25000000  1.0
  Ho  Ho3  1  0.54278369  0.08556738  0.25000000  1.0
  Ho  Ho4  1  0.91443262  0.45721631  0.25000000  1.0
  Ho  Ho5  1  0.45721631  0.54278369  0.75000000  1.0
  Ho  Ho6  1  0.45721631  0.91443262  0.75000000  1.0
  Ho  Ho7  1  0.08556738  0.54278369  0.75000000  1.0
  Ho  Ho8  1  0.20992722  0.79007278  0.43692182  1.0
  Ho  Ho9  1  0.20992722  0.41985545  0.43692182  1.0
  Ho  Ho10  1  0.58014455  0.79007278  0.43692182  1.0
  Ho  Ho11  1  0.79007278  0.20992722  0.56307818  1.0
  Ho  Ho12  1  0.79007278  0.58014455  0.56307818  1.0
  Ho  Ho13  1  0.41985545  0.20992722  0.56307818  1.0
  Ho  Ho14  1  0.79007278  0.20992722  0.93692182  1.0
  Ho  Ho15  1  0.79007278  0.58014455  0.93692182  1.0
  Ho  Ho16  1  0.41985545  0.20992722  0.93692182  1.0
  Ho  Ho17  1  0.20992722  0.79007278  0.06307818  1.0
  Ho  Ho18  1  0.20992722  0.41985545  0.06307818  1.0
  Ho  Ho19  1  0.58014455  0.79007278  0.06307818  1.0
  Zn  Zn20  1  0.88622558  0.11377442  0.25000000  1.0
  Zn  Zn21  1  0.88622558  0.77244916  0.25000000  1.0
  Zn  Zn22  1  0.22755084  0.11377442  0.25000000  1.0
  Zn  Zn23  1  0.11377442  0.88622558  0.75000000  1.0
  Zn  Zn24  1  0.11377442  0.22755084  0.75000000  1.0
  Zn  Zn25  1  0.77244916  0.88622558  0.75000000  1.0
  Co  Co26  1  0.33333300  0.66666700  0.25000000  1.0
  Co  Co27  1  0.66666700  0.33333300  0.75000000  1.0

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