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Ba2LaCu3O7

High-Entropy Materials HEA

MP-ID: mp-622210 · Space group: Pmmm (#47)

Basic Information

Formula
Ba2LaCu3O7
MP-ID
mp-622210
Elements
4
Sites
13
Density
6.4205
g/cm³
Volume
185.23
ų
Cell a
3.9120
Å
Cell b
3.9786
Å
Cell c
11.9009
Å
α Angle
90.00
°
β Angle
90.00
°
γ Angle
90.00
°
Space Group
Pmmm
Point Group
mmm
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
7.43 11.9009 7.1 (0,0,1)
22.35 3.9786 11.0 (0,1,0)
22.41 3.9670 7.8 (0,0,3)
22.73 3.9120 6.5 (1,0,0)
23.94 3.7164 1.8 (1,0,1)
27.28 3.2689 1.1 (1,0,2)
31.86 2.8092 89.9 (0,1,3)
32.09 2.7895 91.7 (1,1,0)
32.13 2.7855 100.0 (1,0,3)
37.76 2.3827 4.3 (0,1,4)
37.80 2.3802 2.9 (0,0,5)
38.00 2.3682 2.5 (1,0,4)
39.49 2.2818 27.4 (1,1,3)
44.52 2.0350 1.4 (1,1,4)
45.60 1.9893 28.0 (0,2,0)
45.74 1.9835 21.4 (0,0,6)
46.42 1.9560 26.5 (2,0,0)
51.38 1.7782 2.0 (0,2,3)
51.48 1.7751 2.2 (0,1,6)
51.54 1.7732 1.8 (1,2,0)
51.67 1.7691 1.4 (1,0,6)
52.10 1.7554 2.5 (2,1,0)
52.14 1.7544 1.9 (2,0,3)
53.93 1.7001 1.4 (0,0,7)
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Energy Properties

Formation Energy/atom
-2.16893
eV/atom
Energy/atom
-6.45411
eV/atom
Energy above Hull
0.0208
eV/atom
Uncorrected Energy
-6.0842
eV/atom
Volume/atom
14.25
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
0.0000
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 · 0.538
Element Family
Metalloid-Nonmetal
Solute Fraction
0.462
Interstitial Fraction
0.000

High-Entropy Alloy Features

Composite Radar (normalized)
Element-Class Share
Mix Entropy ΔS/R
1.1570
HEA criterion (>1.0 = high entropy)
Mix Entropy ΔS
9.6192
J/mol·K
Ω Parameter
3.6239
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
55.133%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
1.0527
smaller = more stable mixing
VEC
5.231
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
-1.562
kJ/mol; negative = exothermic mixing
Entropy Norm
0.8346
SS Former
0
Phase Tendency
IM

Related Tasks

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-622210
Reference Citation

The crystal structure and related material properties of Ba2LaCu3O7 were obtained from the Materials Project database (MP-ID: mp-622210, 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_Ba2LaCu3O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.91203300
_cell_length_b   3.97857500
_cell_length_c   11.90092500
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ba2LaCu3O7
_chemical_formula_sum   'Ba2 La1 Cu3 O7'
_cell_volume   185.22976564
_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
  Ba  Ba0  1  0.00000000  0.00000000  0.17901600  1.0
  Ba  Ba1  1  0.00000000  0.00000000  0.82098400  1.0
  La  La2  1  0.00000000  0.00000000  0.50000000  1.0
  Cu  Cu3  1  0.50000000  0.50000000  0.34430700  1.0
  Cu  Cu4  1  0.50000000  0.50000000  0.65569300  1.0
  Cu  Cu5  1  0.50000000  0.50000000  0.00000000  1.0
  O  O6  1  0.50000000  0.50000000  0.84239600  1.0
  O  O7  1  0.50000000  0.00000000  0.00000000  1.0
  O  O8  1  0.50000000  0.00000000  0.36631700  1.0
  O  O9  1  0.00000000  0.50000000  0.63093900  1.0
  O  O10  1  0.50000000  0.50000000  0.15760400  1.0
  O  O11  1  0.50000000  0.00000000  0.63368300  1.0
  O  O12  1  0.00000000  0.50000000  0.36906100  1.0
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