Eu(AsPd)2

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-672213 · Space group: Cm (#8)

Materials Project API

Basic Information

Formula

Eu(AsPd)2

MP-ID

mp-672213

Elements

Sites

Density

8.4985

g/cm³

Volume

100.56

Å³

Cell a

5.9520

Cell b

5.9520

Cell c

4.4466

α Angle

69.95

β Angle

69.95

γ Angle

43.38

Space Group

Point Group

Crystal System

Monoclinic

Bravais Lattice

Stability

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
17.25	5.1402	8.7	(1,1,0)
21.50	4.1327	2.5	(0,0,1)
21.98	4.0448	3.2	(1,0,0)
22.07	4.0273	1.5	(1,1,1)
28.55	3.1265	8.9	(1,0,1)
32.42	2.7614	25.7	(1,1,-1)
33.14	2.7035	52.5	(2,1,0)
33.16	2.7013	100.0	(1,0,-1)
33.59	2.6683	23.9	(2,2,1)
33.93	2.6421	96.6	(2,1,1)
34.91	2.5701	14.8	(2,2,0)
40.60	2.2219	58.0	(1,1,2)
41.03	2.1998	56.4	(1,-1,0)
44.82	2.0224	1.2	(2,0,0)
45.10	2.0101	14.9	(2,1,-1)
46.29	1.9615	13.7	(3,2,1)
48.10	1.8918	9.6	(2,2,-1)
48.90	1.8627	16.1	(3,2,0)
49.50	1.8413	8.6	(3,3,1)
52.58	1.7406	15.0	(1,0,-2)
53.24	1.7206	12.5	(2,0,-1)
53.56	1.7111	4.3	(1,1,-2)
54.03	1.6974	12.2	(3,1,1)
54.16	1.6935	11.9	(3,2,2)

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Energy Properties

Formation Energy/atom

-0.79094

eV/atom

Energy/atom

-6.78856

eV/atom

Energy above Hull

0.0071

eV/atom

Uncorrected Energy

-6.7886

eV/atom

Volume/atom

20.11

Å³

c/a Ratio

0.7471

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Yes

Total Mag. Moment

6.8091

μB

Mag. Ordering

Mag. Sites

Magnetization/Volume

0.067710

μB/Å³

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)

Composition Info

Major / Matrix Element

As · 0.400

Element Family

Metalloid-Nonmetal

Solute Fraction

0.600

Interstitial Fraction

0.000

High-Entropy Alloy Features

Composite Radar (normalized)

Element-Class Share

Mix Entropy ΔS/R

1.0549

HEA criterion (>1.0 = high entropy)

Mix Entropy ΔS

8.7706

J/mol·K

Ω Parameter

0.0000

Ω > 1.1 favors solid solution

Atomic Size Mismatch δr

18.555%

δr < 6.6% favors single-phase solid solution

Electronegativity Diff Δχ

0.3961

smaller = more stable mixing

VEC

6.600

valence electron concentration, affects phase stability

Mix Enthalpy ΔH_mix

0.000

kJ/mol; negative = exothermic mixing

Entropy Norm

0.9602

SS Former

Phase Tendency

Traditional Material Features

ROM Blended-Feature Radar

Rating & Classification

Tier

Score

0.437

Family

As-rich Multi-Component

Matrix Element

As · 0.400

Related Tasks

Related computation task IDs (5)

aaadoqov aaadwbrt aaaefrme aaaeprrq aaafbkeb

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-672213

Reference Citation

The crystal structure and related material properties of Eu(AsPd)2 were obtained from the Materials Project database (MP-ID: mp-672213, 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_Eu(AsPd)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.95198685
_cell_length_b   5.95198685
_cell_length_c   4.44656131
_cell_angle_alpha   69.94644357
_cell_angle_beta   69.94644357
_cell_angle_gamma   43.38087843
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Eu(AsPd)2
_chemical_formula_sum   'Eu1 As2 Pd2'
_cell_volume   100.55836933
_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
  Eu  Eu0  1  0.00027300  0.00027300  0.99119700  1.0
  As  As1  1  0.62278900  0.62278900  0.37274100  1.0
  As  As2  1  0.37345300  0.37345300  0.62700400  1.0
  Pd  Pd3  1  0.25039900  0.25039900  0.24571700  1.0
  Pd  Pd4  1  0.74816200  0.74816200  0.75235200  1.0

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