Eu3Cr

Traditional Materials TRA

MP-ID: mp-1184391 · Space group: P6_3/mmc (#194)

Materials Project API

Basic Information

Formula

Eu3Cr

MP-ID

mp-1184391

Elements

Sites

Density

5.8958

g/cm³

Volume

286.09

Å³

Cell a

7.4915

Cell b

7.4915

Cell c

5.8862

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

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
13.65	6.4878	1.5	(1,0,-1,0)
20.37	4.3594	13.3	(1,0,-1,1)
23.75	3.7458	4.7	(2,-1,-1,0)
27.50	3.2439	23.6	(2,0,-2,0)
30.37	2.9431	24.7	(0,0,0,2)
31.49	2.8410	100.0	(2,0,-2,1)
36.65	2.4522	2.6	(3,-1,-2,0)
38.92	2.3142	2.8	(2,-1,-1,2)
39.82	2.2636	2.2	(3,-1,-2,1)
41.43	2.1797	15.7	(2,0,-2,2)
48.31	1.8839	1.6	(3,-1,-2,2)
48.47	1.8781	1.5	(1,0,-1,3)
48.61	1.8729	19.2	(4,-2,-2,0)
53.23	1.7208	2.0	(4,-1,-3,1)
54.67	1.6789	20.6	(2,0,-2,3)
56.76	1.6220	2.0	(4,0,-4,0)
58.41	1.5801	22.0	(4,-2,-2,2)
59.08	1.5637	10.5	(4,0,-4,1)
59.08	1.5637	5.3	(4,-4,0,1)
63.19	1.4716	3.0	(0,0,0,4)
64.59	1.4430	1.6	(5,-2,-3,1)
65.74	1.4205	3.8	(4,0,-4,2)
70.24	1.3401	3.2	(2,0,-2,4)
76.15	1.2501	7.5	(4,0,-4,3)

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Energy Properties

Formation Energy/atom

0.42447

eV/atom

Energy/atom

-32.23452

eV/atom

Energy above Hull

0.4245

eV/atom

Uncorrected Energy

-9.6815

eV/atom

Volume/atom

35.76

Å³

c/a Ratio

0.7857

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Yes

Total Mag. Moment

53.8068

μB

Mag. Ordering

Mag. Sites

Magnetization/Volume

0.188080

μB/Å³

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)

Composition Info

Major / Matrix Element

Eu · 0.750

Element Family

N/A

Solute Fraction

0.250

Interstitial Fraction

0.000

Traditional Material Features

ROM Blended-Feature Radar

Rating & Classification

Tier

Score

0.521

Family

Binary Alloy

Matrix Element

Eu · 0.750

Related Tasks

Related computation task IDs (2)

aaadbths aaadunit

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-1184391

Reference Citation

The crystal structure and related material properties of Eu3Cr were obtained from the Materials Project database (MP-ID: mp-1184391, 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_Eu3Cr
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.49149750
_cell_length_b   7.49149750
_cell_length_c   5.88622200
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   119.99999556
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Eu3Cr
_chemical_formula_sum   'Eu6 Cr2'
_cell_volume   286.09124405
_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  0.17251200  0.34502400  0.25000000  1.0
  Eu  Eu1  1  0.65497600  0.82748800  0.25000000  1.0
  Eu  Eu2  1  0.17251200  0.82748800  0.25000000  1.0
  Eu  Eu3  1  0.82748800  0.65497600  0.75000000  1.0
  Eu  Eu4  1  0.34502400  0.17251200  0.75000000  1.0
  Eu  Eu5  1  0.82748800  0.17251200  0.75000000  1.0
  Cr  Cr6  1  0.33333300  0.66666700  0.75000000  1.0
  Cr  Cr7  1  0.66666700  0.33333300  0.25000000  1.0

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