Ho3Mn(P3Rh4)2

高熵材料 HEA

MP-ID: mp-3294336 · Space group: Pmmn (#59)

Materials Project API

Basic Information

Formula

Ho3Mn(P3Rh4)2

MP-ID

mp-3294336

Elements

Sites

Density

9.6076

g/cm³

Volume

538.84

Å³

Cell a

3.8747

Cell b

11.1633

Cell c

12.4575

α Angle

90.00

β Angle

90.00

γ Angle

90.00

Space Group

Pmmn

Point Group

mmm

Crystal System

Orthorhombic

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
24.05	3.6998	1.9	(1,0,1)
25.36	3.5120	3.8	(1,1,1)
27.10	3.2901	2.6	(1,0,2)
27.93	3.1945	15.8	(0,3,2)
28.66	3.1144	6.6	(0,0,4)
28.95	3.0839	6.3	(1,2,1)
31.58	2.8329	1.9	(1,0,3)
32.30	2.7712	3.2	(0,3,3)
32.61	2.7459	6.2	(1,1,3)
32.89	2.7233	4.6	(0,4,1)
33.39	2.6839	1.5	(1,3,0)
34.18	2.6237	5.0	(1,3,1)
35.24	2.5469	3.3	(0,4,2)
35.54	2.5262	1.9	(1,2,3)
36.05	2.4915	1.9	(0,0,5)
36.45	2.4648	100.0	(1,3,2)
37.03	2.4274	43.0	(1,0,4)
37.66	2.3883	5.6	(0,3,4)
37.93	2.3720	8.1	(1,1,4)
38.88	2.3163	3.2	(0,4,3)
39.61	2.2751	12.2	(0,2,5)
40.00	2.2541	6.0	(1,3,3)
40.49	2.2281	3.5	(1,4,1)
40.52	2.2260	1.5	(1,2,4)

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Energy Properties

Formation Energy/atom

-1.14877

eV/atom

Energy/atom

-21.17264

eV/atom

Energy above Hull

0.0000

eV/atom

Uncorrected Energy

-21.1726

eV/atom

Volume/atom

14.97

Å³

c/a Ratio

3.2151

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Total Mag. Moment

0.0212

μB

Mag. Ordering

Mag. Sites

Magnetization/Volume

0.000040

μB/Å³

Elastic Properties

Elastic data not available

Feature Analysis

Element Composition (atomic fraction)

Composition Info

Major / Matrix Element

Rh · 0.444

Element Family

4d-TM

Solute Fraction

0.556

Interstitial Fraction

0.333

Composite Radar (normalized)

Element-Class Share

Mix Entropy ΔS/R

1.1858

HEA criterion (>1.0 = high entropy)

Mix Entropy ΔS

9.8589

J/mol·K

Ω Parameter

3.1637

Ω > 1.1 favors solid solution

Atomic Size Mismatch δr

16.412%

δr < 6.6% favors single-phase solid solution

Electronegativity Diff Δχ

0.3947

smaller = more stable mixing

VEC

7.889

valence electron concentration, affects phase stability

Mix Enthalpy ΔH_mix

4.591

kJ/mol; negative = exothermic mixing

Entropy Norm

0.8554

SS Former

Phase Tendency

Related Tasks

Related computation task IDs (1)

aaahflhg

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-3294336

Reference Citation

The crystal structure and related material properties of Ho3Mn(P3Rh4)2 were obtained from the Materials Project database (MP-ID: mp-3294336, 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_Ho3Mn(P3Rh4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.87467613
_cell_length_b   11.16333273
_cell_length_c   12.45748816
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ho3Mn(P3Rh4)2
_chemical_formula_sum   'Ho6 Mn2 P12 Rh16'
_cell_volume   538.83991596
_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  0.52215535  1.0
  Ho  Ho1  1  0.50000000  0.00000000  0.47784465  1.0
  Ho  Ho2  1  0.50000000  0.82150577  0.20075875  1.0
  Ho  Ho3  1  0.50000000  0.17849423  0.20075875  1.0
  Ho  Ho4  1  0.00000000  0.67849423  0.79924125  1.0
  Ho  Ho5  1  0.00000000  0.32150577  0.79924125  1.0
  Mn  Mn6  1  0.00000000  0.50000000  0.99096377  1.0
  Mn  Mn7  1  0.50000000  0.00000000  0.00903623  1.0
  P  P8  1  0.50000000  0.50000000  0.88462911  1.0
  P  P9  1  0.00000000  0.00000000  0.11537089  1.0
  P  P10  1  0.50000000  0.50000000  0.34891697  1.0
  P  P11  1  0.00000000  0.00000000  0.65108303  1.0
  P  P12  1  0.50000000  0.31357703  0.62060012  1.0
  P  P13  1  0.50000000  0.68642297  0.62060012  1.0
  P  P14  1  0.00000000  0.18642297  0.37939988  1.0
  P  P15  1  0.00000000  0.81357703  0.37939988  1.0
  P  P16  1  0.50000000  0.84876352  0.89715601  1.0
  P  P17  1  0.50000000  0.15123648  0.89715601  1.0
  P  P18  1  0.00000000  0.65123648  0.10284399  1.0
  P  P19  1  0.00000000  0.34876352  0.10284399  1.0
  Rh  Rh20  1  0.50000000  0.50000000  0.16171300  1.0
  Rh  Rh21  1  0.00000000  0.00000000  0.83828700  1.0
  Rh  Rh22  1  0.50000000  0.50000000  0.69897459  1.0
  Rh  Rh23  1  0.00000000  0.00000000  0.30102541  1.0
  Rh  Rh24  1  0.50000000  0.33398609  0.99268717  1.0
  Rh  Rh25  1  0.50000000  0.66601391  0.99268717  1.0
  Rh  Rh26  1  0.00000000  0.16601391  0.00731283  1.0
  Rh  Rh27  1  0.00000000  0.83398609  0.00731283  1.0
  Rh  Rh28  1  0.50000000  0.29551107  0.43009954  1.0
  Rh  Rh29  1  0.50000000  0.70448893  0.43009954  1.0
  Rh  Rh30  1  0.00000000  0.20448893  0.56990046  1.0
  Rh  Rh31  1  0.00000000  0.79551107  0.56990046  1.0
  Rh  Rh32  1  0.50000000  0.87218366  0.71349009  1.0
  Rh  Rh33  1  0.50000000  0.12781634  0.71349009  1.0
  Rh  Rh34  1  0.00000000  0.62781634  0.28650991  1.0
  Rh  Rh35  1  0.00000000  0.37218366  0.28650991  1.0

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