Li3FeO4

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-764163 · Space group: Amm2 (#38)

Materials Project API

Basic Information

Formula

Li3FeO4

MP-ID

mp-764163

Elements

Sites

Density

3.3347

g/cm³

Volume

70.05

Å³

Cell a

5.0388

Cell b

10.2511

Cell c

9.8200

α Angle

16.38

β Angle

29.31

γ Angle

33.16

Space Group

Amm2

Point Group

mm2

Crystal System

Orthorhombic

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
18.45	4.8076	99.7	(0,1,1)
18.46	4.8058	100.0	(1,2,2)
21.87	4.0639	50.7	(1,1,1)
29.98	2.9804	22.4	(1,3,3)
30.93	2.8915	19.9	(0,1,0)
36.16	2.4842	13.2	(1,3,2)
36.23	2.4795	13.6	(0,0,1)
36.28	2.4763	12.3	(0,2,1)
36.36	2.4712	12.5	(1,1,2)
36.42	2.4668	8.7	(1,0,0)
36.43	2.4661	8.9	(2,3,3)
43.55	2.0782	47.1	(1,4,3)
43.68	2.0724	46.7	(1,2,3)
44.59	2.0320	41.3	(2,2,2)
47.08	1.9303	4.4	(1,4,4)
47.09	1.9299	4.3	(2,5,5)
48.34	1.8827	2.5	(2,4,3)
48.39	1.8809	2.6	(1,1,0)
48.62	1.8725	2.7	(1,-1,0)
48.69	1.8700	2.7	(2,2,3)
49.16	1.8535	5.0	(2,5,4)
49.26	1.8498	5.1	(0,1,2)
49.34	1.8472	4.9	(0,3,2)
49.46	1.8427	4.9	(2,3,4)

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Energy Properties

Formation Energy/atom

-1.76343

eV/atom

Energy/atom

-6.01201

eV/atom

Energy above Hull

0.0576

eV/atom

Uncorrected Energy

-5.3865

eV/atom

Volume/atom

8.76

Å³

c/a Ratio

1.9489

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Yes

Total Mag. Moment

3.5016

μB

Mag. Ordering

Mag. Sites

Magnetization/Volume

0.049990

μB/Å³

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)

Composition Info

Major / Matrix Element

O · 0.500

Element Family

Metalloid-Nonmetal

Solute Fraction

0.500

Interstitial Fraction

0.000

High-Entropy Alloy Features

Composite Radar (normalized)

Element-Class Share

Mix Entropy ΔS/R

0.9743

HEA criterion (>1.0 = high entropy)

Mix Entropy ΔS

8.1005

J/mol·K

Ω Parameter

1.8314

Ω > 1.1 favors solid solution

Atomic Size Mismatch δr

42.321%

δr < 6.6% favors single-phase solid solution

Electronegativity Diff Δχ

1.1535

smaller = more stable mixing

VEC

3.375

valence electron concentration, affects phase stability

Mix Enthalpy ΔH_mix

1.875

kJ/mol; negative = exothermic mixing

Entropy Norm

0.8869

SS Former

Phase Tendency

Traditional Material Features

ROM Blended-Feature Radar

Rating & Classification

Tier

Score

0.472

Family

O-rich Multi-Component

Matrix Element

O · 0.500

Related Tasks

Related computation task IDs (2)

aaabzbtj aaadyimp

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-764163

Reference Citation

The crystal structure and related material properties of Li3FeO4 were obtained from the Materials Project database (MP-ID: mp-764163, 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_Li3FeO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.03878365
_cell_length_b   10.25109679
_cell_length_c   9.81999832
_cell_angle_alpha   16.38406751
_cell_angle_beta   29.31266023
_cell_angle_gamma   33.15635862
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Li3FeO4
_chemical_formula_sum   'Li3 Fe1 O4'
_cell_volume   70.04649841
_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
  Li  Li0  1  0.00655200  0.99463800  0.00196100  1.0
  Li  Li1  1  0.98672700  0.49313700  0.01060700  1.0
  Li  Li2  1  0.50200900  0.99692800  0.49962000  1.0
  Fe  Fe3  1  0.50451300  0.49235300  0.50603100  1.0
  O  O4  1  0.27376200  0.99013600  0.23810300  1.0
  O  O5  1  0.19171400  0.48899600  0.27936500  1.0
  O  O6  1  0.73639400  0.99364900  0.77329900  1.0
  O  O7  1  0.82059700  0.49738800  0.72792900  1.0

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