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Fe(Si2O3)2

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-744274 · Space group: P1 (#1)

Basic Information

Formula
Fe(Si2O3)2
MP-ID
mp-744274
Elements
3
Sites
11
Density
2.3149
g/cm³
Volume
189.51
ų
Cell a
2.8553
Å
Cell b
6.4630
Å
Cell c
10.4806
Å
α Angle
90.71
°
β Angle
95.16
°
γ Angle
100.19
°
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
8.47 10.4338 19.7 (0,0,1)
13.93 6.3583 3.4 (0,1,0)
16.11 5.5006 3.0 (0,1,-1)
16.54 5.3612 100.0 (0,1,1)
17.00 5.2169 43.5 (0,0,2)
21.72 4.0915 58.7 (0,1,-2)
22.35 3.9772 34.8 (0,1,2)
25.61 3.4780 2.5 (0,0,3)
28.07 3.1792 12.9 (0,2,0)
29.13 3.0659 11.0 (0,2,-1)
29.63 3.0149 25.6 (0,1,3)
31.99 2.7979 3.5 (1,0,0)
32.34 2.7680 5.2 (1,0,-1)
32.58 2.7485 9.5 (1,-1,0)
33.04 2.7114 4.3 (1,-1,-1)
33.43 2.6806 11.0 (0,2,2)
33.94 2.6414 8.4 (1,0,1)
34.38 2.6085 7.3 (0,0,4)
34.94 2.5678 1.9 (1,0,-2)
35.69 2.5155 5.7 (1,-1,-2)
36.87 2.4381 3.2 (0,1,-4)
37.36 2.4072 4.7 (1,1,0)
37.57 2.3940 10.1 (1,1,-1)
37.78 2.3810 1.9 (0,2,-3)
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Energy Properties

Formation Energy/atom
-1.93381
eV/atom
Energy/atom
-7.37554
eV/atom
Energy above Hull
0.8305
eV/atom
Uncorrected Energy
-6.7957
eV/atom
Volume/atom
17.23
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
4.9467
μB
Mag. Ordering
FM
Mag. Sites
2
Magnetization/Volume
0.026100
μB/ų

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
O · 0.545
Element Family
Metalloid-Nonmetal
Solute Fraction
0.455
Interstitial Fraction
0.364

High-Entropy Alloy Features

Composite Radar (normalized)
Element-Class Share
Mix Entropy ΔS/R
0.9165
HEA criterion (>1.0 = high entropy)
Mix Entropy ΔS
7.6195
J/mol·K
Ω Parameter
1.3302
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
33.875%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
0.7740
smaller = more stable mixing
VEC
4.364
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
-4.628
kJ/mol; negative = exothermic mixing
Entropy Norm
0.8342
SS Former
0
Phase Tendency
IM

Traditional Material Features

ROM Blended-Feature Radar
Rating & Classification
Tier
C
Score
0.350
Family
Interstitial Alloy
Matrix Element
O · 0.545

Related Tasks

Related computation task IDs (4)

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-744274
Reference Citation

The crystal structure and related material properties of Fe(Si2O3)2 were obtained from the Materials Project database (MP-ID: mp-744274, 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_Fe(Si2O3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.85531700
_cell_length_b   6.46295004
_cell_length_c   10.48060070
_cell_angle_alpha   90.71056286
_cell_angle_beta   95.15590007
_cell_angle_gamma   100.19158852
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Fe(Si2O3)2
_chemical_formula_sum   'Fe1 Si4 O6'
_cell_volume   189.50571744
_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
  Fe  Fe0  1  0.91804900  0.85730000  0.15452300  1.0
  Si  Si1  1  0.37654000  0.12246700  0.74554600  1.0
  Si  Si2  1  0.73413900  0.79742300  0.73432200  1.0
  Si  Si3  1  0.48159200  0.23014500  0.96564300  1.0
  Si  Si4  1  0.49591600  0.47021600  0.52502500  1.0
  O  O5  1  0.43954400  0.02669700  0.05971700  1.0
  O  O6  1  0.04405600  0.36316400  0.99349100  1.0
  O  O7  1  0.39750400  0.73619200  0.23448600  1.0
  O  O8  1  0.46823400  0.32838300  0.65483500  1.0
  O  O9  1  0.62792200  0.71477300  0.57952500  1.0
  O  O10  1  0.95050300  0.41924000  0.44988700  1.0
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