EuCdSn

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-1018697 · Space group: P6_3mc (#186)

Materials Project API

Basic Information

Formula

EuCdSn

MP-ID

mp-1018697

Elements

Sites

Density

7.5030

g/cm³

Volume

169.57

Å³

Cell a

4.9923

Cell b

4.9923

Cell c

7.8563

α Angle

90.00

β Angle

90.00

γ Angle

120.00

Space Group

P6_3mc

Point Group

6mm

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
20.54	4.3234	2.3	(1,0,-1,0)
20.54	4.3234	1.2	(1,-1,0,0)
22.64	3.9281	2.2	(0,0,0,2)
23.49	3.7878	9.1	(1,0,-1,1)
23.49	3.7878	4.6	(1,-1,0,1)
30.75	2.9073	100.0	(1,0,-1,2)
30.75	2.9073	50.0	(1,-1,0,2)
35.98	2.4961	38.7	(1,1,-2,0)
35.98	2.4961	77.3	(2,-1,-1,0)
40.26	2.2399	24.7	(1,0,-1,3)
42.93	2.1068	2.4	(2,-1,-1,2)
43.42	2.0843	1.8	(2,0,-2,1)
46.22	1.9641	8.8	(0,0,0,4)
48.04	1.8939	43.4	(2,0,-2,2)
51.08	1.7882	3.5	(1,0,-1,4)
51.08	1.7882	1.7	(1,-1,0,4)
55.09	1.6671	6.5	(2,0,-2,3)
55.09	1.6671	3.3	(2,-2,0,3)
57.61	1.5999	1.6	(3,-1,-2,1)
59.93	1.5435	24.3	(2,-1,-1,4)
61.46	1.5088	13.8	(2,1,-3,2)
61.46	1.5088	27.6	(3,-1,-2,2)
62.94	1.4768	11.9	(1,0,-1,5)
64.06	1.4537	2.7	(2,0,-2,4)

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Energy Properties

Formation Energy/atom

-0.53726

eV/atom

Energy/atom

-5.62315

eV/atom

Energy above Hull

0.0000

eV/atom

Uncorrected Energy

-5.6232

eV/atom

Volume/atom

28.26

Å³

c/a Ratio

1.5737

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Yes

Total Mag. Moment

14.0098

μB

Mag. Ordering

Mag. Sites

Magnetization/Volume

0.082620

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

0.000

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

1.1809

Ω > 1.1 favors solid solution

Atomic Size Mismatch δr

9.873%

δr < 6.6% favors single-phase solid solution

Electronegativity Diff Δχ

0.3146

smaller = more stable mixing

VEC

7.667

valence electron concentration, affects phase stability

Mix Enthalpy ΔH_mix

-5.668

kJ/mol; negative = exothermic mixing

Entropy Norm

1.0000

SS Former

Phase Tendency

Traditional Material Features

ROM Blended-Feature Radar

Rating & Classification

Tier

Score

0.390

Family

Eu-rich Multi-Component

Matrix Element

Eu · 0.333

Related Tasks

Related computation task IDs (5)

aaadmtgm aaadsrkm aaaeurix aaafagja aaafijqf

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-1018697

Reference Citation

The crystal structure and related material properties of EuCdSn were obtained from the Materials Project database (MP-ID: mp-1018697, 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_EuCdSn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.99225915
_cell_length_b   4.99225915
_cell_length_c   7.85626100
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   119.99998873
_symmetry_Int_Tables_number   1
_chemical_formula_structural   EuCdSn
_chemical_formula_sum   'Eu2 Cd2 Sn2'
_cell_volume   169.56680114
_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  0.00000000  0.00000000  0.25322200  1.0
  Eu  Eu1  1  0.00000000  0.00000000  0.75322200  1.0
  Cd  Cd2  1  0.66666700  0.33333300  0.45696200  1.0
  Cd  Cd3  1  0.33333300  0.66666700  0.95696200  1.0
  Sn  Sn4  1  0.66666700  0.33333300  0.04281600  1.0
  Sn  Sn5  1  0.33333300  0.66666700  0.54281600  1.0

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