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Ca3(TiS2)4

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-1048690 · Space group: C2/m (#12)

Basic Information

Formula
Ca3(TiS2)4
MP-ID
mp-1048690
Elements
3
Sites
15
Density
3.2195
g/cm³
Volume
293.08
ų
Cell a
7.1203
Å
Cell b
7.1203
Å
Cell c
9.0197
Å
α Angle
54.28
°
β Angle
54.28
°
γ Angle
60.33
°
Space Group
C2/m
Point Group
2/m
Crystal System
Monoclinic
Bravais Lattice
Monoclinic C
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
13.31 6.6531 45.9 (0,0,1)
14.39 6.1558 4.8 (1,1,1)
15.77 5.6206 1.8 (1,0,0)
15.83 5.5993 14.9 (1,0,1)
19.55 4.5409 2.4 (1,1,0)
19.75 4.4963 2.7 (1,1,2)
24.64 3.6132 4.1 (1,0,-1)
24.76 3.5963 1.6 (1,0,2)
25.85 3.4464 2.3 (2,1,1)
25.96 3.4316 2.8 (2,1,2)
26.80 3.3266 2.8 (0,0,2)
28.32 3.1511 1.9 (1,-1,1)
28.86 3.0933 30.7 (2,0,1)
29.01 3.0779 14.5 (2,2,2)
30.68 2.9145 1.1 (1,1,3)
31.84 2.8103 28.4 (2,0,0)
31.92 2.8040 23.6 (2,2,1)
31.97 2.7996 47.8 (2,0,2)
32.10 2.7880 1.7 (2,1,0)
32.16 2.7830 12.4 (2,2,3)
32.38 2.7647 2.6 (2,1,3)
36.83 2.4403 2.6 (1,0,3)
39.04 2.3070 2.9 (2,-1,0)
39.35 2.2898 2.7 (3,2,3)
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Energy Properties

Formation Energy/atom
-1.84041
eV/atom
Energy/atom
-6.55361
eV/atom
Energy above Hull
0.1466
eV/atom
Uncorrected Energy
-6.2853
eV/atom
Volume/atom
19.54
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
0.4064
μB
Mag. Ordering
FM
Mag. Sites
2
Magnetization/Volume
0.001390
μB/ų

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
S · 0.533
Element Family
Metalloid-Nonmetal
Solute Fraction
0.467
Interstitial Fraction
0.000

High-Entropy Alloy Features

Composite Radar (normalized)
Element-Class Share
Mix Entropy ΔS/R
1.0096
HEA criterion (>1.0 = high entropy)
Mix Entropy ΔS
8.3939
J/mol·K
Ω Parameter
0.0862
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
27.528%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
0.6600
smaller = more stable mixing
VEC
4.667
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
-92.289
kJ/mol; negative = exothermic mixing
Entropy Norm
0.9190
SS Former
0
Phase Tendency
AM

Traditional Material Features

ROM Blended-Feature Radar
Rating & Classification
Tier
C
Score
0.433
Family
S-rich Multi-Component
Matrix Element
S · 0.533

Related Tasks

Related computation task IDs (2)

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-1048690
Reference Citation

The crystal structure and related material properties of Ca3(TiS2)4 were obtained from the Materials Project database (MP-ID: mp-1048690, 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_Ca3(TiS2)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.12026435
_cell_length_b   7.12026435
_cell_length_c   9.01968956
_cell_angle_alpha   54.28321450
_cell_angle_beta   54.28321450
_cell_angle_gamma   60.32951339
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ca3(TiS2)4
_chemical_formula_sum   'Ca3 Ti4 S8'
_cell_volume   293.07638661
_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
  Ca  Ca0  1  0.00000000  0.50000000  0.50000000  1.0
  Ca  Ca1  1  0.50000000  0.00000000  0.50000000  1.0
  Ca  Ca2  1  0.50000000  0.50000000  0.50000000  1.0
  Ti  Ti3  1  0.77871200  0.22128800  0.00000000  1.0
  Ti  Ti4  1  0.22128800  0.77871200  0.00000000  1.0
  Ti  Ti5  1  0.23930400  0.23930400  0.00565000  1.0
  Ti  Ti6  1  0.76069600  0.76069600  0.99435000  1.0
  S  S7  1  0.97397200  0.47922000  0.21468800  1.0
  S  S8  1  0.47922000  0.97397200  0.21468800  1.0
  S  S9  1  0.47831400  0.47831400  0.20909900  1.0
  S  S10  1  0.97002800  0.97002800  0.23311100  1.0
  S  S11  1  0.02997200  0.02997200  0.76688900  1.0
  S  S12  1  0.52168600  0.52168600  0.79090100  1.0
  S  S13  1  0.52078000  0.02602800  0.78531200  1.0
  S  S14  1  0.02602800  0.52078000  0.78531200  1.0
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