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YbPaO4

High-Entropy Materials HEA

MP-ID: mp-676985 · Space group: I4_1/amd (#141)

Basic Information

Formula
YbPaO4
MP-ID
mp-676985
Elements
3
Sites
12
Density
10.4017
g/cm³
Volume
149.45
ų
Cell a
6.5050
Å
Cell b
6.5050
Å
Cell c
6.5050
Å
α Angle
131.90
°
β Angle
131.90
°
γ Angle
70.39
°
Space Group
I4_1/amd
Point Group
4/mmm
Crystal System
Tetragonal
Bravais Lattice
Tetragonal I
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 16)
2θd (Å)Ihkl
18.70 4.7449 2.8 (1,0,-1)
29.15 3.0639 100.0 (2,0,-1)
33.72 2.6579 11.8 (2,2,-2)
33.81 2.6511 23.4 (1,-1,1)
48.50 1.8770 33.2 (3,1,-3)
48.57 1.8746 16.5 (2,-2,0)
57.53 1.6020 15.3 (3,3,-4)
57.65 1.5991 30.4 (3,-1,-2)
60.43 1.5319 10.0 (4,0,-2)
70.91 1.3290 2.6 (4,4,-4)
71.12 1.3256 5.1 (2,-2,2)
78.54 1.2179 12.6 (5,1,-4)
78.64 1.2166 6.3 (4,-2,-1)
80.92 1.1880 4.6 (5,3,-5)
81.07 1.1862 4.6 (4,0,-4)
81.12 1.1856 4.6 (3,-3,1)
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Energy Properties

Formation Energy/atom
-4.09700
eV/atom
Energy/atom
-26.97626
eV/atom
Energy above Hull
0.0000
eV/atom
Uncorrected Energy
-26.9763
eV/atom
Volume/atom
12.45
ų
c/a Ratio
1.0000

Electronic Properties

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

Magnetic Properties

Magnetic
No
Total Mag. Moment
0.0000
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
O · 0.667
Element Family
Metalloid-Nonmetal
Solute Fraction
0.333
Interstitial Fraction
0.000

High-Entropy Alloy Features

Composite Radar (normalized)
Element-Class Share
Mix Entropy ΔS/R
0.8676
HEA criterion (>1.0 = high entropy)
Mix Entropy ΔS
7.2129
J/mol·K
Ω Parameter
0.0000
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
55.874%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
1.0154
smaller = more stable mixing
VEC
6.000
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
0.000
kJ/mol; negative = exothermic mixing
Entropy Norm
0.7897
SS Former
0
Phase Tendency
IM

Related Tasks

Related computation task IDs (3)

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-676985
Reference Citation

The crystal structure and related material properties of YbPaO4 were obtained from the Materials Project database (MP-ID: mp-676985, 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_YbPaO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.50496786
_cell_length_b   6.50496786
_cell_length_c   6.50496786
_cell_angle_alpha   131.89749894
_cell_angle_beta   131.89749894
_cell_angle_gamma   70.39096442
_symmetry_Int_Tables_number   1
_chemical_formula_structural   YbPaO4
_chemical_formula_sum   'Yb2 Pa2 O8'
_cell_volume   149.44735478
_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
  Yb  Yb0  1  0.00000000  0.00000000  0.00000000  1.0
  Yb  Yb1  1  0.75000000  0.25000000  0.50000000  1.0
  Pa  Pa2  1  0.50000000  0.50000000  0.00000000  1.0
  Pa  Pa3  1  0.25000000  0.75000000  0.50000000  1.0
  O  O4  1  0.37500000  0.37993990  0.50493990  1.0
  O  O5  1  0.87500000  0.87006010  0.49506010  1.0
  O  O6  1  0.62006010  0.12500000  0.99506010  1.0
  O  O7  1  0.87500000  0.37993990  0.00493990  1.0
  O  O8  1  0.12993990  0.62500000  0.00493990  1.0
  O  O9  1  0.37500000  0.87006010  0.99506010  1.0
  O  O10  1  0.12993990  0.12500000  0.50493990  1.0
  O  O11  1  0.62006010  0.62500000  0.49506010  1.0
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