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Fe3(O2F)2

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-755846 · Space group: P1 (#1)

Basic Information

Formula
Fe3(O2F)2
MP-ID
mp-755846
Elements
3
Sites
18
Density
4.4464
g/cm³
Volume
201.31
ų
Cell a
4.6948
Å
Cell b
5.5984
Å
Cell c
7.6903
Å
α Angle
85.46
°
β Angle
88.84
°
γ Angle
87.81
°
Space Group
P1
Point Group
1
Crystal System
Triclinic
Bravais Lattice
Triclinic P
Stability
No
Packing Fraction
0.5240

X-ray Diffraction

Diffraction Pattern
X-axis: 2θ (°); Y-axis: relative intensity; CuKa ; λ=1.5406 Å
Diffraction Peaks (Top 24)
2θd (Å)Ihkl
22.05 4.0320 1.2 (1,0,1)
26.31 3.3869 100.0 (1,1,1)
27.45 3.2492 96.6 (1,-1,-1)
35.00 2.5638 26.6 (1,1,-2)
35.10 2.5568 26.9 (0,2,-1)
35.12 2.5550 25.8 (0,0,3)
35.21 2.5489 25.0 (1,-1,2)
37.87 2.3760 1.1 (1,2,1)
38.38 2.3453 8.2 (2,0,0)
38.40 2.3441 9.7 (0,2,2)
39.67 2.2718 7.7 (1,2,-1)
39.89 2.2602 7.5 (1,0,3)
40.49 2.2277 7.3 (1,0,-3)
40.66 2.2190 7.4 (1,-2,1)
42.37 2.1332 4.0 (2,1,1)
42.39 2.1325 3.5 (1,2,2)
43.87 2.0635 2.8 (2,-1,-1)
43.89 2.0629 2.8 (1,-2,-2)
46.78 1.9418 1.5 (2,1,2)
52.18 1.7529 15.2 (2,2,-1)
52.26 1.7504 15.9 (1,3,0)
52.45 1.7445 14.9 (1,1,4)
52.51 1.7428 14.0 (2,0,3)
53.49 1.7131 13.9 (2,0,-3)
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Energy Properties

Formation Energy/atom
-1.77153
eV/atom
Energy/atom
-7.21943
eV/atom
Energy above Hull
0.1196
eV/atom
Uncorrected Energy
-6.0594
eV/atom
Volume/atom
11.18
ų
c/a Ratio
-

Electronic Properties

Metallic
Metal
Band Gap
0
eV
Direct Gap
No
CBM
N/A
eV

Magnetic Properties

Magnetic
Yes
Total Mag. Moment
28.0016
μB
Mag. Ordering
FM
Mag. Sites
8
Magnetization/Volume
0.139090
μB/ų

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
O · 0.444
Element Family
Metalloid-Nonmetal
Solute Fraction
0.556
Interstitial Fraction
0.000

High-Entropy Alloy Features

Composite Radar (normalized)
Element-Class Share
Mix Entropy ΔS/R
1.0609
HEA criterion (>1.0 = high entropy)
Mix Entropy ΔS
8.8200
J/mol·K
Ω Parameter
0.0000
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
41.252%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
0.8690
smaller = more stable mixing
VEC
5.556
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
0.000
kJ/mol; negative = exothermic mixing
Entropy Norm
0.9656
SS Former
0
Phase Tendency
IM

Traditional Material Features

ROM Blended-Feature Radar
Rating & Classification
Tier
C
Score
0.322
Family
O-rich Multi-Component
Matrix Element
O · 0.444

Related Tasks

Related computation task IDs (2)

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-755846
Reference Citation

The crystal structure and related material properties of Fe3(O2F)2 were obtained from the Materials Project database (MP-ID: mp-755846, 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

BibTeX
@article{Horton2025,
  author  = {Horton, Matthew K. and Huck, Patrick and Yang, Ruo Xi and Munro, Jason M. and Dwaraknath, Shyam and Ganose, Alex M. and Kingsbury, Ryan S. and Wen, Mingjian and Shen, Jimmy X. and Mathis, Tyler S. and Kaplan, Aaron D. and Berket, Karlo and Riebesell, Janosh and George, Janine and Rosen, Andrew S. and Spotte-Smith, Evan W. C. and McDermott, Matthew J. and Cohen, Orion A. and Dunn, Alex and Kuner, Matthew C. and Rignanese, Gian-Marco and Petretto, Guido and Waroquiers, David and Griffin, Sinead M. and Neaton, Jeffrey B. and Chrzan, Daryl C. and Asta, Mark and Hautier, Geoffroy and Cholia, Shreyas and Ceder, Gerbrand and Ong, Shyue Ping and Jain, Anubhav and Persson, Kristin A.},
  title   = {Accelerated data-driven materials science with the Materials Project},
  journal = {Nature Materials},
  year    = {2025},
  volume  = {24},
  number  = {10},
  pages   = {1522--1532},
  month   = {oct},
  doi     = {10.1038/s41563-025-02272-0},
  issn    = {1476-4660},
  url     = {https://doi.org/10.1038/s41563-025-02272-0},
  abstract = {The Materials Project was launched formally in 2011 to drive materials discovery forwards through high-throughput computation and open data. More than a decade later, the Materials Project has become an indispensable tool used by more than 600,000 materials researchers around the world. This Perspective describes how the Materials Project, as a data platform and a software ecosystem, has helped to shape research in data-driven materials science. We cover how sustainable software and computational methods have accelerated materials design while becoming more open source and collaborative in nature. Next, we present cases where the Materials Project was used to understand and discover functional materials. We then describe our efforts to meet the needs of an expanding user base, through technical infrastructure updates ranging from data architecture and cloud resources to interactive web applications. Finally, we discuss opportunities to better aid the research community, with the vision that more accessible and easy-to-understand materials data will result in democratized materials knowledge and an increasingly collaborative community.}
}

3D Crystal Structure Rendering

Loading 3D structure…

Style: Ball & Stick
Raw CIF Data
# generated using pymatgen
data_Fe3(O2F)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.69479500
_cell_length_b   5.59838617
_cell_length_c   7.69033580
_cell_angle_alpha   85.45660716
_cell_angle_beta   88.84244804
_cell_angle_gamma   87.80649108
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Fe3(O2F)2
_chemical_formula_sum   'Fe6 O8 F4'
_cell_volume   201.31450105
_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
  Fe  Fe0  1  0.49161200  0.83380500  0.66795600  1.0
  Fe  Fe1  1  0.51226900  0.49660300  0.98717600  1.0
  Fe  Fe2  1  0.53367600  0.16873700  0.34499500  1.0
  Fe  Fe3  1  0.00948900  0.33454900  0.66912500  1.0
  Fe  Fe4  1  0.94942900  0.65717100  0.32504800  1.0
  Fe  Fe5  1  0.00334800  0.00346800  0.00335500  1.0
  O  O6  1  0.81835500  0.36387700  0.44274400  1.0
  O  O7  1  0.80362600  0.71156100  0.09591000  1.0
  O  O8  1  0.69656800  0.20868000  0.10529500  1.0
  O  O9  1  0.69880600  0.54228800  0.75808500  1.0
  O  O10  1  0.68751000  0.86364400  0.44484900  1.0
  O  O11  1  0.30665500  0.12855000  0.57064400  1.0
  O  O12  1  0.30262100  0.79378900  0.89184800  1.0
  O  O13  1  0.18842900  0.29303000  0.89524500  1.0
  F  F14  1  0.79969900  0.03698200  0.76891700  1.0
  F  F15  1  0.30423400  0.46960100  0.23514200  1.0
  F  F16  1  0.19644800  0.96121300  0.23913700  1.0
  F  F17  1  0.19722600  0.63245300  0.55452900  1.0
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