Material:

Fe7Co

ID:

MMD-1068

Explore database:

Compounds with the same formula: Fe7Co (1 entry found)
Compounds with the same elements: Fe-Co (11 entries found)
Navigation:
Space group | Lattice parameters | Thermodynamic properties | Phase diagram | Magnetic properties | Atomic positions and site-specific magnetic data | Pair-wise magnetic data | Methods | References

Space group:

Crystal system

cubic

Space group number

229

Hermann-Mauguin

Im-3m

Hall

-I 4 2 3

Point group

m-3m

Structure data:

Normalized formula

Fe7Co

The number of formula units per unit cell

2

The total number of atoms per unit cell

16

The number of inequivalent sites per unit cell

3

Structure search

MP

Lattice parameters:

a (Å)

5.7211

b (Å)

5.7211

c (Å)

5.7211

α (deg.)

90.000

β (deg.)

90.000

γ (deg.)

90.000

Volume (Å3)

187.261

Density (g/cm3)

7.978

Crystal structure visualization:

Thermodynamic properties:

DFT calculations (details)

Formation energy (vs. elemental phases)

-25.4 meV/atom

Formation energy above hull

0 meV, (stable)

Phase diagram:

Phase diagram

Related structures:

Compounds with the same formula: Fe7Co

1 entry found

Compounds with the same elements: Fe-Co

11 entries found

Magnetic properties:

DFT calculations (details)

Magnetic ordering

Ferromagnetic

Total magnetic moment

36.97 μB/cell

Averaged magnetic moment

2.31 μB/atom

Magnetic polarization, Js = μ0Ms

2.30 T (= 1830.3 emu/cm3)
LMTO-GF calculations (details)

Curie temperature, TC

DFT calculations (details)

Magnetic anisotropy constant, Kd-a

0.01 MJ/m3 (= 0.01 meV/cell)

Magnetic easy axis

a

Magnetic hardness parameter, κ

0.04

Atomic positions (fractional coordinates) and site-specific magnetic data:

index species w x y z m (μB) Esoc100 (meV) Esoc001 (meV)
1 Fe 8c 0.250000 0.250000 0.250000 2.51 . .
2 Fe 8c 0.750000 0.750000 0.750000 2.51 . .
3 Fe 8c 0.250000 0.750000 0.250000 2.51 . .
4 Fe 8c 0.750000 0.250000 0.250000 2.51 . .
5 Fe 8c 0.750000 0.750000 0.250000 2.51 . .
6 Fe 8c 0.750000 0.250000 0.750000 2.51 . .
7 Fe 8c 0.250000 0.750000 0.750000 2.51 . .
8 Fe 8c 0.250000 0.250000 0.750000 2.51 . .
9 Fe 6b 0.000000 0.000000 0.500000 2.36 . .
10 Fe 6b 0.000000 0.500000 0.000000 2.36 . .
11 Fe 6b 0.500000 0.000000 0.500000 2.36 . .
12 Fe 6b 0.500000 0.500000 0.000000 2.36 . .
13 Fe 6b 0.500000 0.000000 0.000000 2.36 . .
14 Fe 6b 0.000000 0.500000 0.500000 2.36 . .
15 Co 2a 0.000000 0.000000 0.000000 1.83 . .
16 Co 2a 0.500000 0.500000 0.500000 1.83 . .
w: site multiplicity (the number of equivalent positions) and Wyckoff letter (a label for site symmetry)
m: local magnetic moment
Esoc100 (001): Spin-orbit coupling energy for the magnetization oriented along the crystallographic a (c) axis
(Individual Esoc values are temporarily not available while we perform maintenance.)
Terms and conditions

Site-resolved magnetic moments:

Local magnetic moments

Pair-wise magnetic data:

site i site j distance (Å) Jij (meV)
1 Fe 8c 2 Fe 8c 4.95 .
1 Fe 8c 3 Fe 8c 2.86 .
1 Fe 8c 4 Fe 8c 2.86 .
1 Fe 8c 5 Fe 8c 4.05 .
1 Fe 8c 6 Fe 8c 4.05 .
1 Fe 8c 7 Fe 8c 4.05 .
1 Fe 8c 8 Fe 8c 2.86 .
1 Fe 8c 9 Fe 6b 2.48 .
1 Fe 8c 10 Fe 6b 2.48 .
1 Fe 8c 11 Fe 6b 2.48 .
1 Fe 8c 12 Fe 6b 2.48 .
1 Fe 8c 13 Fe 6b 2.48 .
1 Fe 8c 14 Fe 6b 2.48 .
1 Fe 8c 15 Co 2a 2.48 .
1 Fe 8c 16 Co 2a 2.48 .
2 Fe 8c 3 Fe 8c 4.05 .
2 Fe 8c 4 Fe 8c 4.05 .
2 Fe 8c 5 Fe 8c 2.86 .
2 Fe 8c 6 Fe 8c 2.86 .
2 Fe 8c 7 Fe 8c 2.86 .
2 Fe 8c 8 Fe 8c 4.05 .
2 Fe 8c 9 Fe 6b 2.48 .
2 Fe 8c 10 Fe 6b 2.48 .
2 Fe 8c 11 Fe 6b 2.48 .
2 Fe 8c 12 Fe 6b 2.48 .
2 Fe 8c 13 Fe 6b 2.48 .
2 Fe 8c 14 Fe 6b 2.48 .
2 Fe 8c 15 Co 2a 2.48 .
2 Fe 8c 16 Co 2a 2.48 .
3 Fe 8c 4 Fe 8c 4.05 .
3 Fe 8c 5 Fe 8c 2.86 .
3 Fe 8c 6 Fe 8c 4.95 .
3 Fe 8c 7 Fe 8c 2.86 .
3 Fe 8c 8 Fe 8c 4.05 .
3 Fe 8c 9 Fe 6b 2.48 .
3 Fe 8c 10 Fe 6b 2.48 .
3 Fe 8c 11 Fe 6b 2.48 .
3 Fe 8c 12 Fe 6b 2.48 .
3 Fe 8c 13 Fe 6b 2.48 .
3 Fe 8c 14 Fe 6b 2.48 .
3 Fe 8c 15 Co 2a 2.48 .
3 Fe 8c 16 Co 2a 2.48 .
4 Fe 8c 5 Fe 8c 2.86 .
4 Fe 8c 6 Fe 8c 2.86 .
4 Fe 8c 7 Fe 8c 4.95 .
4 Fe 8c 8 Fe 8c 4.05 .
4 Fe 8c 9 Fe 6b 2.48 .
4 Fe 8c 10 Fe 6b 2.48 .
4 Fe 8c 11 Fe 6b 2.48 .
4 Fe 8c 12 Fe 6b 2.48 .
4 Fe 8c 13 Fe 6b 2.48 .
4 Fe 8c 14 Fe 6b 2.48 .
4 Fe 8c 15 Co 2a 2.48 .
4 Fe 8c 16 Co 2a 2.48 .
5 Fe 8c 6 Fe 8c 4.05 .
5 Fe 8c 7 Fe 8c 4.05 .
5 Fe 8c 8 Fe 8c 4.95 .
5 Fe 8c 9 Fe 6b 2.48 .
5 Fe 8c 10 Fe 6b 2.48 .
5 Fe 8c 11 Fe 6b 2.48 .
5 Fe 8c 12 Fe 6b 2.48 .
5 Fe 8c 13 Fe 6b 2.48 .
5 Fe 8c 14 Fe 6b 2.48 .
5 Fe 8c 15 Co 2a 2.48 .
5 Fe 8c 16 Co 2a 2.48 .
6 Fe 8c 7 Fe 8c 4.05 .
6 Fe 8c 8 Fe 8c 2.86 .
6 Fe 8c 9 Fe 6b 2.48 .
6 Fe 8c 10 Fe 6b 2.48 .
6 Fe 8c 11 Fe 6b 2.48 .
6 Fe 8c 12 Fe 6b 2.48 .
6 Fe 8c 13 Fe 6b 2.48 .
6 Fe 8c 14 Fe 6b 2.48 .
6 Fe 8c 15 Co 2a 2.48 .
6 Fe 8c 16 Co 2a 2.48 .
7 Fe 8c 8 Fe 8c 2.86 .
7 Fe 8c 9 Fe 6b 2.48 .
7 Fe 8c 10 Fe 6b 2.48 .
7 Fe 8c 11 Fe 6b 2.48 .
7 Fe 8c 12 Fe 6b 2.48 .
7 Fe 8c 13 Fe 6b 2.48 .
7 Fe 8c 14 Fe 6b 2.48 .
7 Fe 8c 15 Co 2a 2.48 .
7 Fe 8c 16 Co 2a 2.48 .
8 Fe 8c 9 Fe 6b 2.48 .
8 Fe 8c 10 Fe 6b 2.48 .
8 Fe 8c 11 Fe 6b 2.48 .
8 Fe 8c 12 Fe 6b 2.48 .
8 Fe 8c 13 Fe 6b 2.48 .
8 Fe 8c 14 Fe 6b 2.48 .
8 Fe 8c 15 Co 2a 2.48 .
8 Fe 8c 16 Co 2a 2.48 .
9 Fe 6b 10 Fe 6b 4.05 .
9 Fe 6b 11 Fe 6b 2.86 .
9 Fe 6b 12 Fe 6b 4.95 .
9 Fe 6b 13 Fe 6b 4.05 .
9 Fe 6b 14 Fe 6b 2.86 .
9 Fe 6b 15 Co 2a 2.86 .
9 Fe 6b 16 Co 2a 4.05 .
10 Fe 6b 11 Fe 6b 4.95 .
10 Fe 6b 12 Fe 6b 2.86 .
10 Fe 6b 13 Fe 6b 4.05 .
10 Fe 6b 14 Fe 6b 2.86 .
10 Fe 6b 15 Co 2a 2.86 .
10 Fe 6b 16 Co 2a 4.05 .
11 Fe 6b 12 Fe 6b 4.05 .
11 Fe 6b 13 Fe 6b 2.86 .
11 Fe 6b 14 Fe 6b 4.05 .
11 Fe 6b 15 Co 2a 4.05 .
11 Fe 6b 16 Co 2a 2.86 .
12 Fe 6b 13 Fe 6b 2.86 .
12 Fe 6b 14 Fe 6b 4.05 .
12 Fe 6b 15 Co 2a 4.05 .
12 Fe 6b 16 Co 2a 2.86 .
13 Fe 6b 14 Fe 6b 4.95 .
13 Fe 6b 15 Co 2a 2.86 .
13 Fe 6b 16 Co 2a 4.05 .
14 Fe 6b 15 Co 2a 4.05 .
14 Fe 6b 16 Co 2a 2.86 .
15 Co 2a 16 Co 2a 4.95 .
Jij: magnetic exchange parameter between site i and j (Individual Jij values are temporarily not available while we perform maintenance.)
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Terms and conditions

Pair-resolved magnetic exchange parameters:

Exchange coupling parameters

Individual exchange parameters:

Exchange coupling parameters

Methods:

DFT calculations

  • exchange-correlation energy functional: GGA-PBE
  • pseudopotential type: PAW
  • cutoff energy: 65.0 Ry
  • k-point grid: (kx, ky, kz) = (10, 10, 10) for magnetic anisotropy calculations
  • package: QE (v6.3)

LMTO-GF calculations

  • k-point grid: (kx, ky, kz) =
  • energy mesh: 41 points on an elliptical contour
  • package: Questaal (v7)

References:

References

Materials Project: mp-1080603
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