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Li2FeS2

Elasticity Data ELA

MP-ID: mp-756187 · Space group: P4_2/mcm (#132)

Basic Information

Formula
Li2FeS2
MP-ID
mp-756187
Elements
3
Sites
10
Density
2.3458
g/cm³
Volume
189.51
ų
Cell a
5.7707
Å
Cell b
5.7707
Å
Cell c
5.6908
Å
α Angle
90.00
°
β Angle
90.00
°
γ Angle
90.00
°
Space Group
P4_2/mcm
Point Group
4/mmm
Crystal System
Tetragonal
Bravais Lattice
Tetragonal P
Stability
No
Packing Fraction
0.6800

X-ray Diffraction

Diffraction Pattern
X-axis: 2θ (°); Y-axis: relative intensity; CuKa ; λ=1.5406 Å
Diffraction Peaks (Top 24)
2θd (Å)Ihkl
15.35 5.7707 100.0 (1,0,0)
21.78 4.0805 22.7 (1,1,0)
26.89 3.3161 47.8 (1,1,1)
34.76 2.5808 13.6 (2,1,0)
35.17 2.5520 12.9 (1,0,2)
38.30 2.3504 2.5 (2,1,1)
38.57 2.3340 9.0 (1,1,2)
44.40 2.0403 21.4 (2,2,0)
44.73 2.0260 43.4 (2,0,2)
47.25 1.9236 1.2 (3,0,0)
47.57 1.9116 19.0 (2,1,2)
49.98 1.8249 3.6 (3,1,0)
52.67 1.7377 10.0 (3,1,1)
53.25 1.7202 5.7 (1,1,3)
57.59 1.6005 7.9 (3,2,0)
57.86 1.5936 7.9 (3,0,2)
60.25 1.5361 5.1 (3,1,2)
64.60 1.4427 6.0 (4,0,0)
65.62 1.4227 3.3 (0,0,4)
66.85 1.3996 3.0 (4,1,0)
67.10 1.3950 1.5 (3,2,2)
67.85 1.3813 3.0 (1,0,4)
69.05 1.3602 1.1 (3,3,0)
69.11 1.3591 1.4 (4,1,1)
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Energy Properties

Formation Energy/atom
-1.08911
eV/atom
Energy/atom
-5.20164
eV/atom
Energy above Hull
0.1159
eV/atom
Uncorrected Energy
-5.0004
eV/atom
Volume/atom
18.95
ų
c/a Ratio
0.9862

Electronic Properties

Metallic
Non-metal
Band Gap
0.163
eV
Direct Gap
No
CBM
N/A
eV

Magnetic Properties

Magnetic
Yes
Total Mag. Moment
7.9979
μB
Mag. Ordering
FM
Mag. Sites
2
Magnetization/Volume
0.042200
μB/ų

Elastic Properties

KVRH
29.394
GPa
GVRH
13.543
GPa
Young's Modulus E
35.220
GPa
Poisson Ratio ν
0.300
Pugh Ratio K/G
2.170
Vickers Hardness Est.
0.710
GPa
Ductility
Brittle
Anisotropy
1.658
Lame λ
20.365
GPa

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
Li · 0.400
Element Family
Alkali-AlkEarth
Solute Fraction
0.600
Interstitial Fraction
0.000

Elasticity Features

Elastic Modulus Comparison (GPa)
Elastic Features
Elastic Anisotropy AU
1.6580
Homogeneous Poisson ν
0.3000
Debye Temperature
299.6
K
Sound Velocity
2,684.0
m/s
Homogeneity
0.3000

Related Tasks

Related computation task IDs (2)

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-756187
Reference Citation

The crystal structure and related material properties of Li2FeS2 were obtained from the Materials Project database (MP-ID: mp-756187, 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_Li2FeS2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.77073500
_cell_length_b   5.77073500
_cell_length_c   5.69081600
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Li2FeS2
_chemical_formula_sum   'Li4 Fe2 S4'
_cell_volume   189.51204001
_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
  Li  Li0  1  0.00000000  0.50000000  0.75000000  1.0
  Li  Li1  1  0.50000000  0.00000000  0.75000000  1.0
  Li  Li2  1  0.00000000  0.50000000  0.25000000  1.0
  Li  Li3  1  0.50000000  0.00000000  0.25000000  1.0
  Fe  Fe4  1  0.50000000  0.50000000  0.25000000  1.0
  Fe  Fe5  1  0.50000000  0.50000000  0.75000000  1.0
  S  S6  1  0.72791900  0.27208100  0.50000000  1.0
  S  S7  1  0.27208100  0.27208100  0.00000000  1.0
  S  S8  1  0.72791900  0.72791900  0.00000000  1.0
  S  S9  1  0.27208100  0.72791900  0.50000000  1.0
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