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AcYb(In2Pd)2

High-Entropy Materials HEA

MP-ID: mp-3246720 · Space group: Amm2 (#38)

Basic Information

Formula
AcYb(In2Pd)2
MP-ID
mp-3246720
Elements
4
Sites
8
Density
9.3029
g/cm³
Volume
191.38
ų
Cell a
5.8075
Å
Cell b
5.8075
Å
Cell c
7.8450
Å
α Angle
90.00
°
β Angle
90.00
°
γ Angle
133.67
°
Space Group
Amm2
Point Group
mm2
Crystal System
Orthorhombic
Bravais Lattice
Orthorhombic P
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
16.60 5.3393 1.3 (1,-1,0)
20.12 4.4140 1.5 (1,-1,1)
21.15 4.2006 2.2 (0,1,0)
21.15 4.2006 2.2 (1,0,0)
22.67 3.9225 7.7 (0,0,2)
24.03 3.7031 3.4 (1,0,1)
28.23 3.1612 4.9 (1,-1,2)
31.20 2.8669 100.0 (1,0,2)
31.87 2.8080 10.5 (1,-2,0)
31.87 2.8080 10.5 (2,-1,0)
33.57 2.6697 5.1 (2,-2,0)
33.91 2.6437 72.1 (2,-1,1)
35.52 2.5273 35.2 (2,-2,1)
38.33 2.3485 22.9 (1,-1,3)
39.45 2.2845 38.3 (1,1,0)
39.47 2.2832 8.2 (1,-2,2)
39.47 2.2832 8.2 (2,-1,2)
40.64 2.2200 15.0 (1,0,3)
40.89 2.2070 10.6 (2,-2,2)
45.97 1.9741 2.5 (1,1,2)
46.29 1.9613 11.2 (0,0,4)
47.51 1.9137 6.3 (1,-2,3)
47.51 1.9137 6.3 (2,-1,3)
48.75 1.8681 5.2 (2,-2,3)
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Energy Properties

Formation Energy/atom
-0.68825
eV/atom
Energy/atom
-30.86352
eV/atom
Energy above Hull
0.0465
eV/atom
Uncorrected Energy
-30.8635
eV/atom
Volume/atom
23.92
ų
c/a Ratio
-

Electronic Properties

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

Magnetic Properties

Magnetic
No
Total Mag. Moment
0.0002
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
In · 0.500
Element Family
PostTransition-Noble
Solute Fraction
0.500
Interstitial Fraction
0.000

High-Entropy Alloy Features

Composite Radar (normalized)
Element-Class Share
Mix Entropy ΔS/R
1.2130
HEA criterion (>1.0 = high entropy)
Mix Entropy ΔS
10.0849
J/mol·K
Ω Parameter
1.5355
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
10.942%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
0.3943
smaller = more stable mixing
VEC
6.000
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
-6.399
kJ/mol; negative = exothermic mixing
Entropy Norm
0.8750
SS Former
0
Phase Tendency
IM

Related Tasks

Related computation task IDs (1)

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-3246720
Reference Citation

The crystal structure and related material properties of AcYb(In2Pd)2 were obtained from the Materials Project database (MP-ID: mp-3246720, 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_AcYb(In2Pd)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.80749786
_cell_length_b   5.80749821
_cell_length_c   7.84499751
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   133.67237572
_symmetry_Int_Tables_number   1
_chemical_formula_structural   AcYb(In2Pd)2
_chemical_formula_sum   'Ac1 Yb1 In4 Pd2'
_cell_volume   191.37689937
_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
  Ac  Ac0  1  0.06613448  0.93386552  0.25000000  1.0
  Yb  Yb1  1  0.93284397  0.06715603  0.75000000  1.0
  In  In2  1  0.64649183  0.35350817  0.56141748  1.0
  In  In3  1  0.35659357  0.64340643  0.45837627  1.0
  In  In4  1  0.64649183  0.35350817  0.93858252  1.0
  In  In5  1  0.35659357  0.64340643  0.04162373  1.0
  Pd  Pd6  1  0.21186044  0.78813956  0.75000000  1.0
  Pd  Pd7  1  0.78299131  0.21700869  0.25000000  1.0
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