EuPPt

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-672290 · Space group: P6_3/mmc (#194)

Materials Project API

Basic Information

Formula

EuPPt

MP-ID

mp-672290

Elements

Sites

Density

10.0415

g/cm³

Volume

125.03

Å³

Cell a

4.1021

Cell b

4.1012

Cell c

8.5820

α Angle

90.00

β Angle

90.00

γ Angle

120.01

Space Group

P6_3/mmc

Point Group

6/mmm

Crystal System

Hexagonal

Bravais Lattice

Stability

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
20.70	4.2910	23.0	(0,0,0,2)
25.07	3.5523	4.7	(1,-1,0,0)
25.07	3.5522	4.7	(1,0,-1,0)
25.07	3.5515	4.7	(0,1,-1,0)
27.17	3.2823	43.5	(1,-1,0,-1)
27.17	3.2822	43.4	(1,-1,0,1)
27.17	3.2822	43.5	(1,0,-1,1)
27.17	3.2821	43.4	(1,0,-1,-1)
27.17	3.2816	43.4	(0,1,-1,1)
27.17	3.2815	43.5	(0,1,-1,-1)
32.73	2.7363	99.0	(1,-1,0,-2)
32.73	2.7363	99.4	(1,-1,0,2)
32.73	2.7363	99.0	(1,0,-1,2)
32.73	2.7362	99.4	(1,0,-1,-2)
32.73	2.7360	99.3	(0,1,-1,2)
32.73	2.7359	98.9	(0,1,-1,-2)
40.49	2.2281	15.7	(1,-1,0,-3)
40.49	2.2280	15.7	(1,0,-1,3)
40.49	2.2280	15.6	(1,-1,0,3)
40.49	2.2280	15.6	(1,0,-1,-3)
40.49	2.2279	15.6	(0,1,-1,3)
40.49	2.2278	15.7	(0,1,-1,-3)
42.12	2.1455	100.0	(0,0,0,4)
44.16	2.0510	87.3	(2,-1,-1,0)

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Energy Properties

Formation Energy/atom

-1.17078

eV/atom

Energy/atom

-8.42902

eV/atom

Energy above Hull

0.0037

eV/atom

Uncorrected Energy

-34.3383

eV/atom

Volume/atom

20.84

Å³

c/a Ratio

2.0921

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Yes

Total Mag. Moment

13.2839

μB

Mag. Ordering

Unknown

Mag. Sites

Magnetization/Volume

0.106250

μB/Å³

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)

Composition Info

Major / Matrix Element

Eu · 0.333

Element Family

Lanthanide

Solute Fraction

0.667

Interstitial Fraction

0.333

High-Entropy Alloy Features

Composite Radar (normalized)

Element-Class Share

Mix Entropy ΔS/R

1.0986

HEA criterion (>1.0 = high entropy)

Mix Entropy ΔS

9.1339

J/mol·K

Ω Parameter

2.1230

Ω > 1.1 favors solid solution

Atomic Size Mismatch δr

21.345%

δr < 6.6% favors single-phase solid solution

Electronegativity Diff Δχ

0.4893

smaller = more stable mixing

VEC

7.333

valence electron concentration, affects phase stability

Mix Enthalpy ΔH_mix

4.958

kJ/mol; negative = exothermic mixing

Entropy Norm

1.0000

SS Former

Phase Tendency

Traditional Material Features

ROM Blended-Feature Radar

Rating & Classification

Tier

Score

0.427

Family

Eu-rich Multi-Component

Matrix Element

Eu · 0.333

Related Tasks

Related computation task IDs (5)

aaadmhxx aaaemsuw aaaeuwmp aaafaewp aaafjgnc

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-672290

Reference Citation

The crystal structure and related material properties of EuPPt were obtained from the Materials Project database (MP-ID: mp-672290, 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_EuPPt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.10208608
_cell_length_b   4.10123710
_cell_length_c   8.58197886
_cell_angle_alpha   89.99811628
_cell_angle_beta   89.99973641
_cell_angle_gamma   120.00918599
_symmetry_Int_Tables_number   1
_chemical_formula_structural   EuPPt
_chemical_formula_sum   'Eu2 P2 Pt2'
_cell_volume   125.02518660
_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
  Eu  Eu0  1  0.00000005  0.00000017  0.99999948  1.0
  Eu  Eu1  1  0.00000006  -0.00000008  0.50000050  1.0
  P  P2  1  0.33339377  0.66681884  0.75007471  1.0
  P  P3  1  0.66660617  0.33318110  0.24992531  1.0
  Pt  Pt4  1  0.66666181  0.33333700  0.75013149  1.0
  Pt  Pt5  1  0.33333814  0.66666297  0.24986850  1.0

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