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Fe9Co7

Traditional Materials TRA

MP-ID: mp-601842 · Space group: Pm-3m (#221)

Basic Information

Formula
Fe9Co7
MP-ID
mp-601842
Elements
2
Sites
16
Density
8.3229
g/cm³
Volume
182.58
ų
Cell a
5.6731
Å
Cell b
5.6731
Å
Cell c
5.6731
Å
α Angle
90.00
°
β Angle
90.00
°
γ Angle
90.00
°
Space Group
Pm-3m
Point Group
m-3m
Crystal System
Cubic
Bravais Lattice
Cubic 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 13)
2θd (Å)Ihkl
45.21 2.0057 50.0 (2,0,-2)
45.21 2.0057 50.0 (2,0,2)
45.21 2.0057 100.0 (0,2,2)
45.21 2.0057 100.0 (2,2,0)
65.85 1.4183 14.7 (0,0,4)
65.85 1.4183 14.7 (4,0,0)
65.85 1.4183 14.7 (0,4,0)
83.48 1.1580 14.3 (2,2,-4)
83.48 1.1580 14.3 (2,2,4)
83.48 1.1580 14.3 (4,2,-2)
83.48 1.1580 14.3 (4,2,2)
83.48 1.1580 14.3 (2,4,-2)
83.48 1.1580 14.3 (2,4,2)
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Energy Properties

Formation Energy/atom
-0.05679
eV/atom
Energy/atom
-7.94204
eV/atom
Energy above Hull
0.0000
eV/atom
Uncorrected Energy
-14.0998
eV/atom
Volume/atom
11.41
ų
c/a Ratio
-

Electronic Properties

Metallic
Metal
Band Gap
0
eV
Direct Gap
No
CBM
N/A
eV

Magnetic Properties

Magnetic
Yes
Total Mag. Moment
38.4533
μB
Mag. Ordering
Unknown
Mag. Sites
0
Magnetization/Volume
0.210610
μB/ų

Elastic Properties

KVRH
0.002
GPa
GVRH
0.000
GPa
Young's Modulus E
-
GPa
Poisson Ratio ν
-
Pugh Ratio K/G
8.318
Vickers Hardness Est.
-
GPa
Ductility
Brittle
Anisotropy
17,712.758
Lame λ
0.002
GPa

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
Fe · 0.563
Element Family
N/A
Solute Fraction
0.438
Interstitial Fraction
0.000

Traditional Material Features

ROM Blended-Feature Radar
Rating & Classification
Tier
A
Score
0.859
Family
Fe-based Alloy
Matrix Element
Fe · 0.563

Related Tasks

Related computation task IDs (3)

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-601842
Reference Citation

The crystal structure and related material properties of Fe9Co7 were obtained from the Materials Project database (MP-ID: mp-601842, 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_Fe9Co7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.67309446
_cell_length_b   5.67305930
_cell_length_c   5.67310802
_cell_angle_alpha   89.99999899
_cell_angle_beta   90.00001040
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Fe9Co7
_chemical_formula_sum   'Fe9 Co7'
_cell_volume   182.58218119
_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
  Fe  Fe0  1  0.24958097  0.24957927  0.24957627  1.0
  Fe  Fe1  1  0.75042466  0.24957873  0.24957573  1.0
  Fe  Fe2  1  0.75042466  0.75042227  0.75042427  1.0
  Fe  Fe3  1  0.24957857  0.75042257  0.24957443  1.0
  Fe  Fe4  1  0.24957757  0.24957743  0.75042557  1.0
  Fe  Fe5  1  0.24957997  0.75042173  0.75042273  1.0
  Fe  Fe6  1  0.75042197  0.75041968  0.24957932  1.0
  Fe  Fe7  1  0.75042297  0.24957932  0.75042168  1.0
  Fe  Fe8  1  0.49999679  0.49999900  0.50000100  1.0
  Co  Co9  1  0.49999992  0.00000000  -0.00000000  1.0
  Co  Co10  1  0.99999712  0.50000000  0.50000000  1.0
  Co  Co11  1  -0.00000030  0.00000000  0.50000000  1.0
  Co  Co12  1  -0.00000130  0.50000000  0.00000000  1.0
  Co  Co13  1  0.49999865  0.50000000  -0.00000000  1.0
  Co  Co14  1  -0.00000087  0.00000000  0.00000000  1.0
  Co  Co15  1  0.49999965  0.00000000  0.50000000  1.0
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