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Ce9YO20

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-677131 · Space group: P-1 (#2)

Basic Information

Formula
Ce9YO20
MP-ID
mp-677131
Elements
3
Sites
30
Density
6.9268
g/cm³
Volume
400.33
ų
Cell a
6.6498
Å
Cell b
7.6777
Å
Cell c
8.5881
Å
α Angle
102.92
°
β Angle
97.41
°
γ Angle
106.76
°
Space Group
P-1
Point Group
-1
Crystal System
Triclinic
Bravais Lattice
Triclinic 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
28.46 3.1362 100.0 (1,0,2)
28.47 3.1351 99.9 (0,2,-2)
28.47 3.1350 99.9 (2,0,-1)
28.48 3.1345 99.8 (1,-2,-1)
32.99 2.7155 37.8 (1,0,-3)
32.99 2.7154 37.8 (1,2,0)
33.00 2.7146 37.8 (2,-2,1)
47.34 1.9203 36.7 (0,2,3)
47.34 1.9202 36.7 (1,-2,4)
47.34 1.9201 36.7 (3,0,1)
47.35 1.9200 36.7 (2,2,-3)
47.36 1.9194 36.7 (1,-4,1)
47.36 1.9194 36.7 (3,-2,-2)
56.16 1.6378 14.7 (0,0,5)
56.16 1.6377 14.7 (2,2,2)
56.17 1.6376 14.7 (1,2,-5)
56.17 1.6375 14.7 (3,2,-1)
56.17 1.6374 14.7 (3,-2,3)
56.18 1.6373 14.7 (2,-2,-4)
56.18 1.6373 14.7 (3,0,-4)
56.18 1.6372 14.7 (1,4,-2)
56.18 1.6372 14.7 (0,4,1)
56.19 1.6370 14.7 (2,-4,3)
56.19 1.6370 14.7 (4,-2,0)
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Energy Properties

Formation Energy/atom
-3.84522
eV/atom
Energy/atom
-9.14191
eV/atom
Energy above Hull
0.0187
eV/atom
Uncorrected Energy
-17.5799
eV/atom
Volume/atom
13.34
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
1.0000
μB
Mag. Ordering
NM
Mag. Sites
0
Magnetization/Volume
0.002500
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
0.7449
HEA criterion (>1.0 = high entropy)
Mix Entropy ΔS
6.1929
J/mol·K
Ω Parameter
6.4025
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
57.829%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
1.0891
smaller = more stable mixing
VEC
3.667
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
-0.403
kJ/mol; negative = exothermic mixing
Entropy Norm
0.6780
SS Former
0
Phase Tendency
IM

Traditional Material Features

ROM Blended-Feature Radar
Rating & Classification
Tier
A
Score
0.654
Family
O-rich Multi-Component
Matrix Element
O · 0.667

Related Tasks

Related computation task IDs (2)

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-677131
Reference Citation

The crystal structure and related material properties of Ce9YO20 were obtained from the Materials Project database (MP-ID: mp-677131, 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_Ce9YO20
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.64974786
_cell_length_b   7.67766546
_cell_length_c   8.58809559
_cell_angle_alpha   102.92231324
_cell_angle_beta   97.40814988
_cell_angle_gamma   106.75567806
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ce9YO20
_chemical_formula_sum   'Ce9 Y1 O20'
_cell_volume   400.32932273
_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
  Ce  Ce0  1  0.80046404  0.60115430  0.60153095  1.0
  Ce  Ce1  1  0.59955442  0.19891911  0.19872823  1.0
  Ce  Ce2  1  -0.00000000  0.50000000  0.00000000  1.0
  Ce  Ce3  1  0.80028973  0.09988684  0.60177763  1.0
  Ce  Ce4  1  0.19953596  0.39884570  0.39846905  1.0
  Ce  Ce5  1  0.60182532  0.70093647  0.19921774  1.0
  Ce  Ce6  1  0.39817468  0.29906353  0.80078226  1.0
  Ce  Ce7  1  0.19971027  0.90011316  0.39822237  1.0
  Ce  Ce8  1  0.40044558  0.80108089  0.80127177  1.0
  Y  Y9  1  -0.00000000  0.00000000  0.00000000  1.0
  O  O10  1  0.85007644  0.32473452  0.45061087  1.0
  O  O11  1  0.64796148  0.92441804  0.05072737  1.0
  O  O12  1  0.44940167  0.52436872  0.65004842  1.0
  O  O13  1  0.94986449  0.77342491  0.15106068  1.0
  O  O14  1  0.85079404  0.82576104  0.45040003  1.0
  O  O15  1  0.74890500  0.37470098  0.75026428  1.0
  O  O16  1  0.25159783  0.12581378  0.25167315  1.0
  O  O17  1  0.64942661  0.42504592  0.04952989  1.0
  O  O18  1  0.94959939  0.27701599  0.15109389  1.0
  O  O19  1  0.44933569  0.02519166  0.64962376  1.0
  O  O20  1  0.55066431  0.97480834  0.35037624  1.0
  O  O21  1  0.05040061  0.72298401  0.84890611  1.0
  O  O22  1  0.74840217  0.87418622  0.74832685  1.0
  O  O23  1  0.25109500  0.62529902  0.24973572  1.0
  O  O24  1  0.35057339  0.57495408  0.95047011  1.0
  O  O25  1  0.05013551  0.22657509  0.84893932  1.0
  O  O26  1  0.55059833  0.47563128  0.34995158  1.0
  O  O27  1  0.14920596  0.17423896  0.54959997  1.0
  O  O28  1  0.35203852  0.07558196  0.94927263  1.0
  O  O29  1  0.14992356  0.67526548  0.54938913  1.0
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