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La7Y(CdOs)2

High-Entropy Materials HEA

MP-ID: mp-3291295 · Space group: I-4m2 (#119)

Basic Information

Formula
La7Y(CdOs)2
MP-ID
mp-3291295
Elements
4
Sites
24
Density
7.7891
g/cm³
Volume
710.57
ų
Cell a
9.9821
Å
Cell b
10.0872
Å
Cell c
9.9821
Å
α Angle
59.65
°
β Angle
60.70
°
γ Angle
59.65
°
Space Group
I-4m2
Point Group
-42m
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 24)
2θd (Å)Ihkl
10.82 8.1775 31.9 (1,0,0)
12.41 7.1328 1.8 (1,1,0)
20.69 4.2928 12.4 (2,1,0)
21.02 4.2271 1.3 (2,1,2)
21.02 4.2271 1.3 (2,0,1)
21.74 4.0887 21.6 (2,0,0)
24.97 3.5664 1.5 (2,2,0)
27.28 3.2690 5.3 (2,0,-1)
27.28 3.2690 5.3 (2,3,2)
27.53 3.2397 15.0 (3,1,1)
28.09 3.1762 1.7 (3,2,1)
30.82 2.9015 6.2 (0,1,3)
30.82 2.9015 43.5 (3,3,2)
31.15 2.8708 25.0 (3,2,3)
32.64 2.7432 100.0 (3,2,0)
32.86 2.7258 27.7 (3,0,0)
32.86 2.7258 9.2 (0,3,0)
33.28 2.6920 44.9 (3,1,3)
35.60 2.5218 24.7 (2,0,-2)
36.00 2.4950 28.8 (4,2,2)
36.00 2.4950 28.8 (2,-2,0)
37.31 2.4098 8.9 (3,1,-1)
37.51 2.3980 10.3 (4,2,1)
37.88 2.3749 5.2 (4,2,3)
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Energy Properties

Formation Energy/atom
-0.30303
eV/atom
Energy/atom
-31.52865
eV/atom
Energy above Hull
0.0000
eV/atom
Uncorrected Energy
-31.5287
eV/atom
Volume/atom
29.61
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
0.0144
μB
Mag. Ordering
NM
Mag. Sites
0
Magnetization/Volume
0.000020
μB/ų

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
La · 0.583
Element Family
Lanthanide
Solute Fraction
0.417
Interstitial Fraction
0.000

High-Entropy Alloy Features

Composite Radar (normalized)
Element-Class Share
Mix Entropy ΔS/R
1.1187
HEA criterion (>1.0 = high entropy)
Mix Entropy ΔS
9.3012
J/mol·K
Ω Parameter
0.5866
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
13.839%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
0.4193
smaller = more stable mixing
VEC
5.333
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
-23.720
kJ/mol; negative = exothermic mixing
Entropy Norm
0.8070
SS Former
0
Phase Tendency
AM

Related Tasks

Related computation task IDs (1)

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-3291295
Reference Citation

The crystal structure and related material properties of La7Y(CdOs)2 were obtained from the Materials Project database (MP-ID: mp-3291295, 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_La7Y(CdOs)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.98212911
_cell_length_b   10.08723423
_cell_length_c   9.98213008
_cell_angle_alpha   59.65106898
_cell_angle_beta   60.69784834
_cell_angle_gamma   59.65107054
_symmetry_Int_Tables_number   1
_chemical_formula_structural   La7Y(CdOs)2
_chemical_formula_sum   'La14 Y2 Cd4 Os4'
_cell_volume   710.56880527
_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
  La  La0  1  0.44271578  0.44271578  0.05728422  1.0
  La  La1  1  0.05728422  0.05728422  0.44271578  1.0
  La  La2  1  0.44271578  0.05728422  0.05728422  1.0
  La  La3  1  0.84281528  0.85226517  0.84281528  1.0
  La  La4  1  0.68702667  0.31297333  0.31297333  1.0
  La  La5  1  0.05728422  0.44271578  0.44271578  1.0
  La  La6  1  0.31297333  0.68702667  0.68702667  1.0
  La  La7  1  0.31297333  0.31297333  0.68702667  1.0
  La  La8  1  0.85226517  0.84281528  0.46210527  1.0
  La  La9  1  0.68702667  0.68702667  0.31297333  1.0
  La  La10  1  0.46210527  0.84281528  0.85226517  1.0
  La  La11  1  0.05099568  0.44900432  0.05099568  1.0
  La  La12  1  0.84281528  0.46210527  0.84281528  1.0
  La  La13  1  0.44900432  0.05099568  0.44900432  1.0
  Y  Y14  1  0.30726838  0.69273162  0.30726838  1.0
  Y  Y15  1  0.69273162  0.30726838  0.69273162  1.0
  Cd  Cd16  1  0.07893363  0.76762676  0.07893363  1.0
  Cd  Cd17  1  0.07450398  0.07893363  0.76762676  1.0
  Cd  Cd18  1  0.76762676  0.07893363  0.07450398  1.0
  Cd  Cd19  1  0.07893363  0.07450398  0.07893363  1.0
  Os  Os20  1  0.63528340  0.08824217  0.63528340  1.0
  Os  Os21  1  0.63528340  0.64119003  0.63528340  1.0
  Os  Os22  1  0.64119003  0.63528340  0.08824217  1.0
  Os  Os23  1  0.08824217  0.63528340  0.64119003  1.0
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