Ho4InPt11

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-3296649 · Space group: P2/m (#10)

Materials Project API

Basic Information

Formula

Ho4InPt11

MP-ID

mp-3296649

Elements

Sites

Density

17.4097

g/cm³

Volume

278.55

Å³

Cell a

4.1519

Cell b

5.8031

Cell c

11.5695

α Angle

87.80

β Angle

90.00

γ Angle

90.00

Space Group

P2/m

Point Group

2/m

Crystal System

Monoclinic

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
7.65	11.5610	1.8	(0,0,1)
37.85	2.3772	97.1	(1,2,0)
37.93	2.3721	100.0	(1,0,4)
38.42	2.3430	3.4	(1,2,1)
38.92	2.3142	1.0	(1,2,-1)
39.61	2.2754	1.2	(0,2,-3)
43.35	2.0873	32.1	(0,2,4)
43.60	2.0760	34.5	(2,0,0)
45.13	2.0088	29.9	(0,2,-4)
49.47	1.8425	1.1	(0,2,5)
63.17	1.4719	21.2	(2,2,4)
64.25	1.4497	8.9	(0,4,0)
64.47	1.4453	1.3	(0,4,1)
64.48	1.4451	10.2	(0,0,8)
64.56	1.4436	20.8	(2,2,-4)
74.39	1.2753	1.5	(1,4,-3)
75.82	1.2547	10.6	(1,4,4)
75.98	1.2524	11.7	(1,2,8)
76.23	1.2490	12.9	(3,2,0)
76.28	1.2483	13.3	(3,0,4)
78.38	1.2200	10.5	(1,4,-4)
78.54	1.2180	11.6	(1,2,-8)
80.19	1.1969	1.6	(1,4,5)
80.87	1.1886	9.5	(2,4,0)

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Energy Properties

Formation Energy/atom

-1.14323

eV/atom

Energy/atom

-46.17253

eV/atom

Energy above Hull

0.0000

eV/atom

Uncorrected Energy

-46.1725

eV/atom

Volume/atom

17.41

Å³

c/a Ratio

2.7865

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Total Mag. Moment

0.0007

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

Pt · 0.688

Element Family

5d-TM

Solute Fraction

0.313

Interstitial Fraction

0.000

High-Entropy Alloy Features

Composite Radar (normalized)

Element-Class Share

Mix Entropy ΔS/R

0.7775

HEA criterion (>1.0 = high entropy)

Mix Entropy ΔS

6.4638

J/mol·K

Ω Parameter

13.3084

Ω > 1.1 favors solid solution

Atomic Size Mismatch δr

10.714%

δr < 6.6% favors single-phase solid solution

Electronegativity Diff Δχ

0.4527

smaller = more stable mixing

VEC

9.813

valence electron concentration, affects phase stability

Mix Enthalpy ΔH_mix

-0.905

kJ/mol; negative = exothermic mixing

Entropy Norm

0.7077

SS Former

Phase Tendency

Traditional Material Features

ROM Blended-Feature Radar

Rating & Classification

Tier

Score

0.599

Family

Pt-rich Multi-Component

Matrix Element

Pt · 0.688

Related Tasks

Related computation task IDs (1)

aaahfosf

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-3296649

Reference Citation

The crystal structure and related material properties of Ho4InPt11 were obtained from the Materials Project database (MP-ID: mp-3296649, 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_Ho4InPt11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.15194172
_cell_length_b   5.80310502
_cell_length_c   11.56953548
_cell_angle_alpha   87.80374060
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ho4InPt11
_chemical_formula_sum   'Ho4 In1 Pt11'
_cell_volume   278.55339769
_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
  Ho  Ho0  1  0.50000000  0.75831107  0.37612700  1.0
  Ho  Ho1  1  0.50000000  0.71556610  0.86172363  1.0
  Ho  Ho2  1  0.50000000  0.28443390  0.13827637  1.0
  Ho  Ho3  1  0.50000000  0.24168893  0.62387300  1.0
  In  In4  1  0.00000000  0.00000000  0.00000000  1.0
  Pt  Pt5  1  0.00000000  0.01843420  0.24921359  1.0
  Pt  Pt6  1  0.00000000  0.98156580  0.75078641  1.0
  Pt  Pt7  1  0.00000000  0.50000000  0.00000000  1.0
  Pt  Pt8  1  0.00000000  0.50000000  0.50000000  1.0
  Pt  Pt9  1  0.00000000  0.52067375  0.25005362  1.0
  Pt  Pt10  1  0.00000000  0.47932625  0.74994638  1.0
  Pt  Pt11  1  0.50000000  0.25720676  0.37780513  1.0
  Pt  Pt12  1  0.50000000  0.22582070  0.88093755  1.0
  Pt  Pt13  1  0.50000000  0.77417930  0.11906245  1.0
  Pt  Pt14  1  0.50000000  0.74279324  0.62219487  1.0
  Pt  Pt15  1  0.00000000  0.00000000  0.50000000  1.0

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