Navigation

HEAS Data Platform · Materials Science Database

SmY3(SiPd14)2

High-Entropy Materials HEA

MP-ID: mp-3297572 · Space group: P4mm (#99)

Basic Information

Formula
SmY3(SiPd14)2
MP-ID
mp-3297572
Elements
4
Sites
34
Density
10.3899
g/cm³
Volume
551.87
ų
Cell a
8.8721
Å
Cell b
8.8721
Å
Cell c
7.0111
Å
α Angle
90.00
°
β Angle
90.00
°
γ Angle
90.00
°
Space Group
P4mm
Point Group
4mm
Crystal System
Tetragonal
Bravais Lattice
Tetragonal P
Stability
Yes
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
12.63 7.0111 7.0 (0,0,1)
18.98 4.6751 3.4 (1,1,1)
31.90 2.8056 3.4 (3,1,0)
32.56 2.7504 1.8 (2,0,2)
34.43 2.6048 49.7 (3,1,1)
38.51 2.3376 92.5 (2,2,2)
38.78 2.3218 78.5 (3,2,1)
39.88 2.2604 100.0 (3,0,2)
39.89 2.2600 32.4 (1,0,3)
40.68 2.2180 24.0 (4,0,0)
41.22 2.1900 17.1 (1,1,3)
42.76 2.1147 13.3 (4,0,1)
43.27 2.0912 24.2 (3,3,0)
43.78 2.0677 24.1 (2,0,3)
44.02 2.0571 39.0 (4,1,1)
45.02 2.0137 9.9 (2,1,3)
45.73 1.9839 1.2 (4,2,0)
47.64 1.9089 26.4 (4,2,1)
48.58 1.8741 4.8 (2,2,3)
50.85 1.7957 1.0 (3,1,3)
52.60 1.7400 1.5 (5,1,0)
53.25 1.7202 1.2 (5,0,1)
57.48 1.6033 6.9 (2,1,4)
58.28 1.5832 1.0 (5,0,2)
Get direct link

Energy Properties

Formation Energy/atom
-0.58283
eV/atom
Energy/atom
-22.67442
eV/atom
Energy above Hull
0.0000
eV/atom
Uncorrected Energy
-22.6744
eV/atom
Volume/atom
16.23
ų
c/a Ratio
0.7902

Electronic Properties

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

Magnetic Properties

Magnetic
No
Total Mag. Moment
0.0019
μB
Mag. Ordering
NM
Mag. Sites
0
Magnetization/Volume
0.000000
μB/ų

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
Pd · 0.824
Element Family
4d-TM
Solute Fraction
0.176
Interstitial Fraction
0.059

High-Entropy Alloy Features

Composite Radar (normalized)
Element-Class Share
Mix Entropy ΔS/R
0.6445
HEA criterion (>1.0 = high entropy)
Mix Entropy ΔS
5.3582
J/mol·K
Ω Parameter
0.3776
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
10.944%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
0.3212
smaller = more stable mixing
VEC
8.912
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
-25.583
kJ/mol; negative = exothermic mixing
Entropy Norm
0.4649
SS Former
0
Phase Tendency
AM

Related Tasks

Related computation task IDs (1)

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-3297572
Reference Citation

The crystal structure and related material properties of SmY3(SiPd14)2 were obtained from the Materials Project database (MP-ID: mp-3297572, 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_SmY3(SiPd14)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.87207036
_cell_length_b   8.87207036
_cell_length_c   7.01111682
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SmY3(SiPd14)2
_chemical_formula_sum   'Sm1 Y3 Si2 Pd28'
_cell_volume   551.87047304
_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
  Sm  Sm0  1  0.50000000  0.00000000  0.93413385  1.0
  Y  Y1  1  0.00000000  0.50000000  0.06713471  1.0
  Y  Y2  1  0.00000000  0.00000000  0.50023148  1.0
  Y  Y3  1  0.50000000  0.50000000  0.50023148  1.0
  Si  Si4  1  0.50000000  0.00000000  0.44840772  1.0
  Si  Si5  1  0.00000000  0.50000000  0.55195282  1.0
  Pd  Pd6  1  0.33372321  0.83372321  0.61438851  1.0
  Pd  Pd7  1  0.33372321  0.16627679  0.61438851  1.0
  Pd  Pd8  1  0.66627679  0.83372321  0.61438851  1.0
  Pd  Pd9  1  0.66627679  0.16627679  0.61438851  1.0
  Pd  Pd10  1  0.16538686  0.66538686  0.38407501  1.0
  Pd  Pd11  1  0.16538686  0.33461314  0.38407501  1.0
  Pd  Pd12  1  0.83461314  0.66538686  0.38407501  1.0
  Pd  Pd13  1  0.83461314  0.33461314  0.38407501  1.0
  Pd  Pd14  1  0.50000000  0.76911036  0.25842034  1.0
  Pd  Pd15  1  0.50000000  0.23088964  0.25842034  1.0
  Pd  Pd16  1  0.26911036  0.00000000  0.25842034  1.0
  Pd  Pd17  1  0.73088964  0.00000000  0.25842034  1.0
  Pd  Pd18  1  0.00000000  0.72978111  0.74296098  1.0
  Pd  Pd19  1  0.00000000  0.27021889  0.74296098  1.0
  Pd  Pd20  1  0.22978111  0.50000000  0.74296098  1.0
  Pd  Pd21  1  0.77021889  0.50000000  0.74296098  1.0
  Pd  Pd22  1  0.50000000  0.34858133  0.85396776  1.0
  Pd  Pd23  1  0.50000000  0.65141867  0.85396776  1.0
  Pd  Pd24  1  0.84858133  0.00000000  0.85396776  1.0
  Pd  Pd25  1  0.15141867  0.00000000  0.85396776  1.0
  Pd  Pd26  1  0.00000000  0.15141885  0.14582810  1.0
  Pd  Pd27  1  0.00000000  0.84858115  0.14582810  1.0
  Pd  Pd28  1  0.65141885  0.50000000  0.14582810  1.0
  Pd  Pd29  1  0.34858115  0.50000000  0.14582810  1.0
  Pd  Pd30  1  0.24925088  0.74925088  0.99983703  1.0
  Pd  Pd31  1  0.24925088  0.25074912  0.99983703  1.0
  Pd  Pd32  1  0.75074912  0.74925088  0.99983703  1.0
  Pd  Pd33  1  0.75074912  0.25074912  0.99983703  1.0
Get direct link