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BaCdO2

Elasticity Data ELA

MP-ID: mp-7899 · Space group: Pnma (#62)

Basic Information

Formula
BaCdO2
MP-ID
mp-7899
Elements
3
Sites
16
Density
6.8007
g/cm³
Volume
275.17
ų
Cell a
3.6920
Å
Cell b
6.1997
Å
Cell c
12.0218
Å
α Angle
90.00
°
β Angle
90.00
°
γ Angle
90.00
°
Space Group
Pnma
Point Group
mmm
Crystal System
Orthorhombic
Bravais Lattice
Orthorhombic P
Stability
Yes
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
16.09 5.5101 1.2 (0,1,1)
26.48 3.3654 6.6 (0,1,3)
28.80 3.0999 2.9 (0,2,0)
29.11 3.0671 23.2 (1,1,1)
29.73 3.0054 28.6 (0,0,4)
29.76 3.0017 35.3 (0,2,1)
31.90 2.8054 100.0 (1,1,2)
33.12 2.7044 5.8 (0,1,4)
36.11 2.4872 24.6 (1,1,3)
36.65 2.4519 26.2 (0,2,3)
37.90 2.3740 1.5 (1,2,0)
40.23 2.2417 3.0 (0,1,5)
40.87 2.2080 5.0 (1,2,2)
41.87 2.1578 4.7 (0,2,4)
44.35 2.0425 1.1 (1,2,3)
44.99 2.0148 6.1 (1,0,5)
47.45 1.9161 7.6 (1,1,5)
47.88 1.8999 10.4 (0,2,5)
49.37 1.8460 14.4 (2,0,0)
51.23 1.7833 21.1 (1,3,1)
53.02 1.7272 2.9 (1,3,2)
53.84 1.7029 2.7 (0,3,4)
54.14 1.6940 14.3 (1,1,6)
55.52 1.6551 2.9 (0,1,7)
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Energy Properties

Formation Energy/atom
-2.13669
eV/atom
Energy/atom
-5.33042
eV/atom
Energy above Hull
0.0000
eV/atom
Uncorrected Energy
-16.6426
eV/atom
Volume/atom
17.20
ų
c/a Ratio
-

Electronic Properties

Metallic
Non-metal
Band Gap
0.975
eV
Direct Gap
No
CBM
N/A
eV

Magnetic Properties

Magnetic
Yes
Total Mag. Moment
0.0000
μB
Mag. Ordering
Unknown
Mag. Sites
0
Magnetization/Volume
0.000000
μB/ų

Elastic Properties

KVRH
78.484
GPa
GVRH
36.031
GPa
Young's Modulus E
93.747
GPa
Poisson Ratio ν
0.301
Pugh Ratio K/G
2.178
Vickers Hardness Est.
3.548
GPa
Ductility
Brittle
Anisotropy
0.163
Lame λ
54.463
GPa

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
O · 0.500
Element Family
Metalloid-Nonmetal
Solute Fraction
0.500
Interstitial Fraction
0.000

Elasticity Features

Elastic Modulus Comparison (GPa)
Elastic Features
Elastic Anisotropy AU
0.1630
Homogeneous Poisson ν
0.3010
Debye Temperature
402.7
K
Sound Velocity
2,571.3
m/s
Homogeneity
0.3010

Related Tasks

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-7899
Reference Citation

The crystal structure and related material properties of BaCdO2 were obtained from the Materials Project database (MP-ID: mp-7899, 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_BaCdO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.69197323
_cell_length_b   6.19970638
_cell_length_c   12.02174781
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BaCdO2
_chemical_formula_sum   'Ba4 Cd4 O8'
_cell_volume   275.16758875
_cell_formula_units_Z   4
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  0.25000000  0.39616042  0.35759863  1.0
  Ba  Ba1  1  0.75000000  0.60383958  0.64240137  1.0
  Ba  Ba2  1  0.25000000  0.89616042  0.14240137  1.0
  Ba  Ba3  1  0.75000000  0.10383958  0.85759863  1.0
  Cd  Cd4  1  0.75000000  0.90593269  0.39311423  1.0
  Cd  Cd5  1  0.75000000  0.40593269  0.10688577  1.0
  Cd  Cd6  1  0.25000000  0.09406731  0.60688577  1.0
  Cd  Cd7  1  0.25000000  0.59406731  0.89311423  1.0
  O  O8  1  0.25000000  0.28068468  0.01809904  1.0
  O  O9  1  0.75000000  0.71931532  0.98190096  1.0
  O  O10  1  0.25000000  0.78068468  0.48190096  1.0
  O  O11  1  0.75000000  0.21931532  0.51809904  1.0
  O  O12  1  0.25000000  0.85592964  0.74885515  1.0
  O  O13  1  0.75000000  0.64407036  0.24885515  1.0
  O  O14  1  0.25000000  0.35592964  0.75114485  1.0
  O  O15  1  0.75000000  0.14407036  0.25114485  1.0
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