Eu(ZnSn)2

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-644762 · Space group: P2_1/m (#11)

Materials Project API

Basic Information

Formula

Eu(ZnSn)2

MP-ID

mp-644762

Elements

Sites

Density

7.1737

g/cm³

Volume

240.83

Å³

Cell a

4.5847

Cell b

4.6367

Cell c

11.3297

α Angle

89.26

β Angle

90.00

γ Angle

90.00

Space Group

P2_1/m

Point Group

2/m

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
23.56	3.7763	5.9	(0,0,3)
24.99	3.5637	2.0	(1,0,2)
27.36	3.2600	21.2	(1,1,0)
28.42	3.1405	3.8	(1,1,1)
28.56	3.1253	10.0	(1,1,-1)
30.33	2.9467	16.7	(0,1,3)
30.67	2.9148	47.7	(1,0,3)
30.73	2.9095	30.3	(0,1,-3)
31.54	2.8367	100.0	(1,1,2)
31.59	2.8322	8.0	(0,0,4)
31.80	2.8144	73.1	(1,1,-2)
38.85	2.3182	50.3	(0,2,0)
39.30	2.2924	51.6	(2,0,0)
42.07	2.1477	13.9	(1,1,4)
42.47	2.1284	15.4	(1,1,-4)
44.27	2.0462	16.2	(0,1,5)
44.61	2.0313	25.1	(1,0,5)
44.62	2.0310	1.8	(1,2,-1)
44.75	2.0253	10.3	(0,1,-5)
45.65	1.9871	1.2	(0,2,3)
46.33	1.9596	2.2	(2,0,3)
48.20	1.8881	1.3	(0,0,6)
50.03	1.8232	11.3	(1,2,3)
50.44	1.8094	8.1	(2,1,3)

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Energy Properties

Formation Energy/atom

-0.35340

eV/atom

Energy/atom

-4.51874

eV/atom

Energy above Hull

0.0355

eV/atom

Uncorrected Energy

-4.5187

eV/atom

Volume/atom

24.08

Å³

c/a Ratio

2.4712

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Yes

Total Mag. Moment

13.9394

μB

Mag. Ordering

Mag. Sites

Magnetization/Volume

0.057880

μB/Å³

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)

Composition Info

Major / Matrix Element

Zn · 0.400

Element Family

3d-TM

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

4.7890

Ω > 1.1 favors solid solution

Atomic Size Mismatch δr

12.333%

δr < 6.6% favors single-phase solid solution

Electronegativity Diff Δχ

0.2789

smaller = more stable mixing

VEC

7.800

valence electron concentration, affects phase stability

Mix Enthalpy ΔH_mix

1.280

kJ/mol; negative = exothermic mixing

Entropy Norm

0.9602

SS Former

Phase Tendency

Traditional Material Features

ROM Blended-Feature Radar

Rating & Classification

Tier

Score

0.583

Family

Zn-rich Multi-Component

Matrix Element

Zn · 0.400

Related Tasks

Related computation task IDs (5)

aaadmwzv aaadrkqs aaaecvkr aaaetprq aaafwzsj

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-644762

Reference Citation

The crystal structure and related material properties of Eu(ZnSn)2 were obtained from the Materials Project database (MP-ID: mp-644762, 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(ZnSn)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.58474500
_cell_length_b   4.63670600
_cell_length_c   11.32971597
_cell_angle_alpha   89.25686007
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Eu(ZnSn)2
_chemical_formula_sum   'Eu2 Zn4 Sn4'
_cell_volume   240.82814270
_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  0.75000000  0.25935400  0.24591500  1.0
  Eu  Eu1  1  0.25000000  0.74064600  0.75408500  1.0
  Zn  Zn2  1  0.25000000  0.73945600  0.36066900  1.0
  Zn  Zn3  1  0.75000000  0.72028600  0.99921700  1.0
  Zn  Zn4  1  0.75000000  0.26054400  0.63933100  1.0
  Zn  Zn5  1  0.25000000  0.27971400  0.00078300  1.0
  Sn  Sn6  1  0.25000000  0.77896100  0.13238500  1.0
  Sn  Sn7  1  0.75000000  0.22103900  0.86761500  1.0
  Sn  Sn8  1  0.75000000  0.75770200  0.50051000  1.0
  Sn  Sn9  1  0.25000000  0.24229800  0.49949000  1.0

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