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Pr3MnAlS7

High-Entropy Materials HEA

MP-ID: mp-867323 · Space group: P6_3 (#173)

Basic Information

Formula
Pr3MnAlS7
MP-ID
mp-867323
Elements
4
Sites
24
Density
4.4929
g/cm³
Volume
538.94
ų
Cell a
10.0930
Å
Cell b
10.0930
Å
Cell c
6.1090
Å
α Angle
90.00
°
β Angle
90.00
°
γ Angle
120.00
°
Space Group
P6_3
Point Group
6
Crystal System
Hexagonal
Bravais Lattice
Hexagonal P
Stability
Yes
Packing Fraction
0.7400

X-ray Diffraction

Diffraction Pattern
X-axis: 2θ (°); Y-axis: relative intensity; CuKa ; λ=1.5406 Å
Diffraction Peaks (Top 24)
2θd (Å)Ihkl
10.12 8.7408 11.0 (1,0,-1,0)
17.71 5.0073 46.6 (1,0,-1,1)
20.32 4.3704 13.7 (2,0,-2,0)
22.86 3.8907 29.8 (2,-1,-1,1)
25.05 3.5545 100.0 (2,0,-2,1)
26.99 3.3037 42.7 (3,-1,-2,0)
29.24 3.0545 18.3 (0,0,0,2)
30.69 2.9136 1.1 (3,0,-3,0)
30.77 2.9060 14.3 (3,-1,-2,1)
31.01 2.8835 2.2 (1,0,-1,2)
34.09 2.6298 45.6 (3,0,-3,1)
34.32 2.6131 26.0 (2,-1,-1,2)
35.58 2.5232 37.6 (4,-2,-2,0)
35.87 2.5036 48.4 (2,0,-2,2)
37.08 2.4243 22.5 (4,-1,-3,0)
40.01 2.2533 13.3 (4,-3,-1,1)
40.01 2.2533 26.6 (4,-1,-3,1)
40.21 2.2428 35.0 (3,-1,-2,2)
41.32 2.1852 3.8 (4,0,-4,0)
42.90 2.1083 8.0 (3,0,-3,2)
44.01 2.0575 7.9 (4,0,-4,1)
45.22 2.0053 3.8 (5,-2,-3,0)
45.75 1.9832 5.7 (1,0,-1,3)
46.69 1.9453 8.2 (4,-2,-2,2)
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Energy Properties

Formation Energy/atom
-1.91496
eV/atom
Energy/atom
-6.60295
eV/atom
Energy above Hull
0.0000
eV/atom
Uncorrected Energy
-6.3095
eV/atom
Volume/atom
22.46
ų
c/a Ratio
0.6053

Electronic Properties

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

Magnetic Properties

Magnetic
Yes
Total Mag. Moment
10.0039
μB
Mag. Ordering
FM
Mag. Sites
2
Magnetization/Volume
0.018560
μB/ų

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
S · 0.583
Element Family
Metalloid-Nonmetal
Solute Fraction
0.417
Interstitial Fraction
0.000

High-Entropy Alloy Features

Composite Radar (normalized)
Element-Class Share
Mix Entropy ΔS/R
1.0751
HEA criterion (>1.0 = high entropy)
Mix Entropy ΔS
8.9387
J/mol·K
Ω Parameter
0.3933
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
26.832%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
0.6422
smaller = more stable mixing
VEC
5.083
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
-16.656
kJ/mol; negative = exothermic mixing
Entropy Norm
0.7755
SS Former
0
Phase Tendency
AM

Related Tasks

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-867323
Reference Citation

The crystal structure and related material properties of Pr3MnAlS7 were obtained from the Materials Project database (MP-ID: mp-867323, 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_Pr3MnAlS7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.09295215
_cell_length_b   10.09295215
_cell_length_c   6.10901100
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   120.00000096
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Pr3MnAlS7
_chemical_formula_sum   'Pr6 Mn2 Al2 S14'
_cell_volume   538.93695331
_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
  Pr  Pr0  1  0.14495900  0.37629600  0.24277700  1.0
  Pr  Pr1  1  0.85504100  0.62370400  0.74277700  1.0
  Pr  Pr2  1  0.62370400  0.76866300  0.24277700  1.0
  Pr  Pr3  1  0.23133700  0.85504100  0.24277700  1.0
  Pr  Pr4  1  0.76866300  0.14495900  0.74277700  1.0
  Pr  Pr5  1  0.37629600  0.23133700  0.74277700  1.0
  Mn  Mn6  1  0.00000000  0.00000000  0.01872300  1.0
  Mn  Mn7  1  0.00000000  0.00000000  0.51872300  1.0
  Al  Al8  1  0.33333300  0.66666700  0.66431900  1.0
  Al  Al9  1  0.66666700  0.33333300  0.16431900  1.0
  S  S10  1  0.33333300  0.66666700  0.02929000  1.0
  S  S11  1  0.66666700  0.33333300  0.52929000  1.0
  S  S12  1  0.09341900  0.23800300  0.79152000  1.0
  S  S13  1  0.90658100  0.76199700  0.29152000  1.0
  S  S14  1  0.76199700  0.85541600  0.79152000  1.0
  S  S15  1  0.14458400  0.90658100  0.79152000  1.0
  S  S16  1  0.85541600  0.09341900  0.29152000  1.0
  S  S17  1  0.23800300  0.14458400  0.29152000  1.0
  S  S18  1  0.42165900  0.52071700  0.51728900  1.0
  S  S19  1  0.57834100  0.47928300  0.01728900  1.0
  S  S20  1  0.47928300  0.90094300  0.51728900  1.0
  S  S21  1  0.09905700  0.57834100  0.51728900  1.0
  S  S22  1  0.90094300  0.42165900  0.01728900  1.0
  S  S23  1  0.52071700  0.09905700  0.01728900  1.0
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