Er10Cd3Co

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-3295276 · Space group: P6_3/mmc (#194)

Materials Project API

Basic Information

Formula

Er10Cd3Co

MP-ID

mp-3295276

Elements

Sites

Density

9.2479

g/cm³

Volume

742.93

Å³

Cell a

9.4835

Cell b

9.4835

Cell c

9.5386

α Angle

90.00

β Angle

90.00

γ Angle

120.00

Space Group

P6_3/mmc

Point Group

6/mmm

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
21.55	4.1243	1.9	(1,0,-1,2)
26.51	3.3626	1.6	(2,-1,-1,2)
28.69	3.1119	14.7	(2,0,-2,2)
28.76	3.1042	24.6	(3,-1,-2,0)
30.14	2.9651	38.4	(1,0,-1,3)
30.28	2.9518	3.5	(3,-1,-2,1)
32.71	2.7376	17.8	(3,0,-3,0)
34.07	2.6314	77.6	(3,0,-3,1)
34.47	2.6017	100.0	(3,-1,-2,2)
35.71	2.5140	38.5	(2,0,-2,3)
37.72	2.3846	9.5	(0,0,0,4)
37.89	2.3743	1.8	(3,0,-3,2)
37.95	2.3709	11.7	(4,-2,-2,0)
39.34	2.2901	1.2	(1,0,-1,4)
40.62	2.2212	2.3	(3,-1,-2,3)
40.62	2.2212	2.3	(3,-2,-1,3)
43.91	2.0622	7.1	(2,0,-2,4)
44.06	2.0555	1.1	(4,-1,-3,2)
44.11	2.0532	2.2	(4,0,-4,0)
48.12	1.8911	1.1	(3,-1,-2,4)
48.26	1.8859	5.1	(4,0,-4,2)
49.02	1.8582	2.1	(1,0,-1,5)
49.21	1.8517	6.8	(4,-1,-3,3)
50.95	1.7922	1.4	(5,-1,-4,0)

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Energy Properties

Formation Energy/atom

-0.23960

eV/atom

Energy/atom

-29.72556

eV/atom

Energy above Hull

0.0000

eV/atom

Uncorrected Energy

-29.7256

eV/atom

Volume/atom

26.53

Å³

c/a Ratio

1.0058

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Yes

Total Mag. Moment

1.4630

μB

Mag. Ordering

FiM

Mag. Sites

Magnetization/Volume

0.001970

μB/Å³

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)

Composition Info

Major / Matrix Element

Er · 0.714

Element Family

Lanthanide

Solute Fraction

0.286

Interstitial Fraction

0.000

High-Entropy Alloy Features

Composite Radar (normalized)

Element-Class Share

Mix Entropy ΔS/R

0.7589

HEA criterion (>1.0 = high entropy)

Mix Entropy ΔS

6.3098

J/mol·K

Ω Parameter

23.8794

Ω > 1.1 favors solid solution

Atomic Size Mismatch δr

9.042%

δr < 6.6% favors single-phase solid solution

Electronegativity Diff Δχ

0.2290

smaller = more stable mixing

VEC

11.786

valence electron concentration, affects phase stability

Mix Enthalpy ΔH_mix

0.407

kJ/mol; negative = exothermic mixing

Entropy Norm

0.6908

SS Former

Phase Tendency

Traditional Material Features

ROM Blended-Feature Radar

Rating & Classification

Tier

Score

0.609

Family

Er-rich Multi-Component

Matrix Element

Er · 0.714

Related Tasks

Related computation task IDs (1)

aaahfmrk

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-3295276

Reference Citation

The crystal structure and related material properties of Er10Cd3Co were obtained from the Materials Project database (MP-ID: mp-3295276, 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_Er10Cd3Co
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.48346148
_cell_length_b   9.48346139
_cell_length_c   9.53857272
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   119.99999684
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Er10Cd3Co
_chemical_formula_sum   'Er20 Cd6 Co2'
_cell_volume   742.92984534
_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
  Er  Er0  1  0.00000000  0.00000000  0.50000000  1.0
  Er  Er1  1  0.00000000  0.00000000  0.00000000  1.0
  Er  Er2  1  0.54263197  0.45736803  0.25000000  1.0
  Er  Er3  1  0.54263197  0.08526493  0.25000000  1.0
  Er  Er4  1  0.91473507  0.45736803  0.25000000  1.0
  Er  Er5  1  0.45736803  0.54263197  0.75000000  1.0
  Er  Er6  1  0.45736803  0.91473507  0.75000000  1.0
  Er  Er7  1  0.08526493  0.54263197  0.75000000  1.0
  Er  Er8  1  0.21177880  0.78822120  0.43517569  1.0
  Er  Er9  1  0.21177880  0.42355761  0.43517569  1.0
  Er  Er10  1  0.57644239  0.78822120  0.43517569  1.0
  Er  Er11  1  0.78822120  0.21177880  0.56482431  1.0
  Er  Er12  1  0.78822120  0.57644239  0.56482431  1.0
  Er  Er13  1  0.42355761  0.21177880  0.56482431  1.0
  Er  Er14  1  0.78822120  0.21177880  0.93517569  1.0
  Er  Er15  1  0.78822120  0.57644239  0.93517569  1.0
  Er  Er16  1  0.42355761  0.21177880  0.93517569  1.0
  Er  Er17  1  0.21177880  0.78822120  0.06482431  1.0
  Er  Er18  1  0.21177880  0.42355761  0.06482431  1.0
  Er  Er19  1  0.57644239  0.78822120  0.06482431  1.0
  Cd  Cd20  1  0.88527787  0.11472213  0.25000000  1.0
  Cd  Cd21  1  0.88527787  0.77055674  0.25000000  1.0
  Cd  Cd22  1  0.22944326  0.11472213  0.25000000  1.0
  Cd  Cd23  1  0.11472213  0.88527787  0.75000000  1.0
  Cd  Cd24  1  0.11472213  0.22944326  0.75000000  1.0
  Cd  Cd25  1  0.77055674  0.88527787  0.75000000  1.0
  Co  Co26  1  0.33333300  0.66666700  0.25000000  1.0
  Co  Co27  1  0.66666700  0.33333300  0.75000000  1.0

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