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Sr(SbPd)2

High-Entropy Materials HEA Traditional Materials TRA Elasticity Data ELA

MP-ID: mp-8468 · Space group: P4/nmm (#129)

Basic Information

Formula
Sr(SbPd)2
MP-ID
mp-8468
Elements
3
Sites
10
Density
7.7005
g/cm³
Volume
234.61
ų
Cell a
4.6711
Å
Cell b
4.6711
Å
Cell c
10.7522
Å
α Angle
90.00
°
β Angle
90.00
°
γ Angle
90.00
°
Space Group
P4/nmm
Point Group
4/mmm
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
16.49 5.3761 22.7 (0,0,2)
20.73 4.2843 16.5 (1,0,1)
26.99 3.3030 5.8 (1,1,0)
31.46 2.8435 58.7 (1,0,3)
31.80 2.8143 100.0 (1,1,2)
33.33 2.6880 1.6 (0,0,4)
38.55 2.3356 84.9 (2,0,0)
42.19 2.1422 8.2 (2,0,2)
43.40 2.0849 56.0 (1,1,4)
44.16 2.0507 4.4 (2,1,1)
46.49 1.9534 21.5 (1,0,5)
50.57 1.8048 30.4 (2,1,3)
50.96 1.7920 1.6 (0,0,6)
51.86 1.7630 1.8 (2,0,4)
55.65 1.6515 28.6 (2,2,0)
58.46 1.5787 3.0 (2,2,2)
58.61 1.5751 14.4 (1,1,6)
61.93 1.4984 18.0 (2,1,5)
62.92 1.4771 1.0 (3,1,0)
65.34 1.4281 6.9 (3,0,3)
65.54 1.4244 24.1 (3,1,2)
65.67 1.4218 3.0 (2,0,6)
70.00 1.3440 6.8 (0,0,8)
73.10 1.2946 23.1 (3,1,4)
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Energy Properties

Formation Energy/atom
-0.77876
eV/atom
Energy/atom
-4.84079
eV/atom
Energy above Hull
0.0000
eV/atom
Uncorrected Energy
-23.3211
eV/atom
Volume/atom
23.46
ų
c/a Ratio
2.3018

Electronic Properties

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

Magnetic Properties

Magnetic
Yes
Total Mag. Moment
0.0000
μB
Mag. Ordering
Unknown
Mag. Sites
0
Magnetization/Volume
0.000000
μB/ų

Elastic Properties

KVRH
76.461
GPa
GVRH
1.084
GPa
Young's Modulus E
3.237
GPa
Poisson Ratio ν
0.493
Pugh Ratio K/G
70.536
Vickers Hardness Est.
0.000
GPa
Ductility
Brittle
Anisotropy
-11.232
Lame λ
75.738
GPa

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
Sb · 0.400
Element Family
PostTransition-Noble
Solute Fraction
0.600
Interstitial Fraction
0.000

High-Entropy Alloy Features

Composite Radar (normalized)
Element-Class Share
Mix Entropy ΔS/R
1.0549
HEA criterion (>1.0 = high entropy)
Mix Entropy ΔS
8.7706
J/mol·K
Ω Parameter
2.5854
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
15.621%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
0.4748
smaller = more stable mixing
VEC
6.400
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
-4.419
kJ/mol; negative = exothermic mixing
Entropy Norm
0.9602
SS Former
0
Phase Tendency
IM

Traditional Material Features

ROM Blended-Feature Radar
Rating & Classification
Tier
C
Score
0.441
Family
Sb-rich Multi-Component
Matrix Element
Sb · 0.400

Elasticity Features

Elastic Modulus Comparison (GPa)
Elastic Features
Elastic Anisotropy AU
-11.2320
Homogeneous Poisson ν
0.4930
Debye Temperature
47.3
K
Sound Velocity
429.4
m/s
Homogeneity
0.4930

Related Tasks

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-8468
Reference Citation

The crystal structure and related material properties of Sr(SbPd)2 were obtained from the Materials Project database (MP-ID: mp-8468, 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_Sr(SbPd)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.67114016
_cell_length_b   4.67114016
_cell_length_c   10.75216249
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sr(SbPd)2
_chemical_formula_sum   'Sr2 Sb4 Pd4'
_cell_volume   234.60735130
_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
  Sr  Sr0  1  0.25000000  0.25000000  0.75922589  1.0
  Sr  Sr1  1  0.75000000  0.75000000  0.24077411  1.0
  Sb  Sb2  1  0.75000000  0.25000000  0.50000000  1.0
  Sb  Sb3  1  0.25000000  0.75000000  0.50000000  1.0
  Sb  Sb4  1  0.25000000  0.25000000  0.12592665  1.0
  Sb  Sb5  1  0.75000000  0.75000000  0.87407335  1.0
  Pd  Pd6  1  0.75000000  0.25000000  -0.00000000  1.0
  Pd  Pd7  1  0.25000000  0.75000000  -0.00000000  1.0
  Pd  Pd8  1  0.25000000  0.25000000  0.37219943  1.0
  Pd  Pd9  1  0.75000000  0.75000000  0.62780057  1.0
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