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HEAS Data Platform · Materials Science Database

BiIO

Elasticity Data ELA

MP-ID: mp-22987 · Space group: P4/nmm (#129)

Basic Information

Formula
BiIO
MP-ID
mp-22987
Elements
3
Sites
6
Density
7.5885
g/cm³
Volume
154.00
ų
Cell a
4.0042
Å
Cell b
4.0042
Å
Cell c
9.6048
Å
α Angle
90.00
°
β Angle
90.00
°
γ Angle
90.00
°
Space Group
P4/nmm
Point Group
4/mmm
Crystal System
Tetragonal
Bravais Lattice
Tetragonal P
Stability
No
Packing Fraction
0.6800

X-ray Diffraction

Diffraction Pattern
X-axis: 2θ (°); Y-axis: relative intensity; CuKa ; λ=1.5406 Å
Diffraction Peaks (Top 24)
2θd (Å)Ihkl
9.21 9.6048 42.1 (0,0,1)
18.48 4.8024 3.7 (0,0,2)
24.08 3.6959 1.7 (1,0,1)
29.03 3.0754 100.0 (1,0,2)
31.60 2.8314 43.5 (1,1,0)
32.98 2.7159 4.4 (1,1,1)
35.91 2.5006 18.9 (1,0,3)
36.85 2.4391 6.0 (1,1,2)
37.45 2.4012 6.3 (0,0,4)
43.97 2.0593 6.1 (1,0,4)
45.29 2.0021 19.8 (2,0,0)
46.32 1.9600 3.6 (2,0,1)
47.32 1.9210 3.7 (0,0,5)
49.31 1.8480 1.2 (2,0,2)
49.79 1.8313 14.9 (1,1,4)
52.86 1.7320 1.5 (1,0,5)
54.70 1.6779 34.8 (2,1,2)
58.02 1.5896 10.2 (1,1,5)
59.11 1.5629 9.2 (2,1,3)
60.18 1.5377 6.7 (2,0,4)
62.48 1.4864 2.8 (1,0,6)
64.96 1.4355 3.8 (2,1,4)
65.99 1.4157 6.4 (2,2,0)
66.79 1.4006 1.2 (2,2,1)
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Energy Properties

Formation Energy/atom
-1.20860
eV/atom
Energy/atom
-4.66260
eV/atom
Energy above Hull
0.0441
eV/atom
Uncorrected Energy
-30.7538
eV/atom
Volume/atom
25.67
ų
c/a Ratio
2.3987

Electronic Properties

Metallic
Non-metal
Band Gap
1.483
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
16.924
GPa
GVRH
11.049
GPa
Young's Modulus E
27.223
GPa
Poisson Ratio ν
0.232
Pugh Ratio K/G
1.532
Vickers Hardness Est.
1.951
GPa
Ductility
Ductile
Anisotropy
16.013
Lame λ
9.558
GPa

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
Bi · 0.333
Element Family
PostTransition-Noble
Solute Fraction
0.667
Interstitial Fraction
0.000

Elasticity Features

Elastic Modulus Comparison (GPa)
Elastic Features
Elastic Anisotropy AU
16.0130
Homogeneous Poisson ν
0.2320
Debye Temperature
160.5
K
Sound Velocity
1,336.8
m/s
Homogeneity
0.2320

Related Tasks

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-22987
Reference Citation

The crystal structure and related material properties of BiIO were obtained from the Materials Project database (MP-ID: mp-22987, 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_BiIO
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.00421410
_cell_length_b   4.00421410
_cell_length_c   9.60481707
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BiIO
_chemical_formula_sum   'Bi2 I2 O2'
_cell_volume   154.00104897
_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
  Bi  Bi0  1  0.75000000  0.75000000  0.87328923  1.0
  Bi  Bi1  1  0.25000000  0.25000000  0.12671077  1.0
  I  I2  1  0.25000000  0.25000000  0.68049050  1.0
  I  I3  1  0.75000000  0.75000000  0.31950950  1.0
  O  O4  1  0.75000000  0.25000000  -0.00000000  1.0
  O  O5  1  0.25000000  0.75000000  0.00000000  1.0
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