Material:

Fe2Co2N

ID:

MMD-414

Explore database:

Compounds with the same formula: Fe2Co2N (5 entries found)
Compounds with the same elements: Fe-Co-N (272 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

tetragonal

Space group number

131

Hermann-Mauguin

P4_2/mmc

Hall

-P 4c 2

Point group

4/mmm

Structure data:

Normalized formula

Fe2Co2N

The number of formula units per unit cell

2

The total number of atoms per unit cell

10

The number of inequivalent sites per unit cell

5

Structure search

AGA search

Lattice parameters:

a (Å)

3.7600

b (Å)

3.7600

c (Å)

7.4400

α (deg.)

90.000

β (deg.)

90.000

γ (deg.)

90.000

Volume (Å3)

105.184

Density (g/cm3)

7.690

Crystal structure visualization:

Thermodynamic properties:

DFT calculations (details)

Formation energy (vs. elemental phases)

-37.0 meV/atom

Formation energy above hull

43.5 meV/atom

Phase diagram:

Phase diagram
The convex hull is temporarily not available while we perform maintenance.

Related structures:

Compounds with the same formula: Fe2Co2N

5 entries found

Compounds with the same elements: Fe-Co-N

272 entries found

Binary compounds in Fe-Co system

11 entries found

Binary compounds in Fe-N system

38 entries found

Binary compounds in Co-N system

183 entries found

Magnetic properties:

DFT calculations (details)

Magnetic ordering

Ferromagnetic

Total magnetic moment

15.98 μB/cell

Averaged magnetic moment

1.60 μB/atom

Magnetic polarization, Js = μ0Ms

1.77 T (= 1408.5 emu/cm3)
LMTO-GF calculations (details)

Curie temperature, TC

DFT calculations (details)

Magnetic anisotropy constant, Ka-c

0.13 MJ/m3 (= 0.09 meV/cell)

Magnetic easy axis

c

Magnetic hardness parameter, κ

0.23

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

index species w x y z m (μB) Esoc100 (meV) Esoc001 (meV)
1 N 2a 0.000000 0.000000 0.000000 0.09 . .
2 N 2a 0.000000 0.000000 0.500000 0.09 . .
3 Co 2e 0.000000 0.000000 0.250000 1.28 . .
4 Co 2e 0.000000 0.000000 0.750000 1.28 . .
5 Co 2d 0.000000 0.500000 0.500000 1.31 . .
6 Co 2d 0.500000 0.000000 0.000000 1.31 . .
7 Fe 2f 0.500000 0.500000 0.250000 2.77 . .
8 Fe 2f 0.500000 0.500000 0.750000 2.77 . .
9 Fe 2c 0.000000 0.500000 0.000000 2.05 . .
10 Fe 2c 0.500000 0.000000 0.500000 2.05 . .
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 N 2a 2 N 2a 3.72 .
1 N 2a 3 Co 2e 1.86 .
1 N 2a 4 Co 2e 1.86 .
1 N 2a 5 Co 2d 4.17 .
1 N 2a 6 Co 2d 1.88 .
1 N 2a 7 Fe 2f 3.24 .
1 N 2a 8 Fe 2f 3.24 .
1 N 2a 9 Fe 2c 1.88 .
1 N 2a 10 Fe 2c 4.17 .
2 N 2a 3 Co 2e 1.86 .
2 N 2a 4 Co 2e 1.86 .
2 N 2a 5 Co 2d 1.88 .
2 N 2a 6 Co 2d 4.17 .
2 N 2a 7 Fe 2f 3.24 .
2 N 2a 8 Fe 2f 3.24 .
2 N 2a 9 Fe 2c 4.17 .
2 N 2a 10 Fe 2c 1.88 .
3 Co 2e 4 Co 2e 3.72 .
3 Co 2e 5 Co 2d 2.64 .
3 Co 2e 6 Co 2d 2.64 .
3 Co 2e 7 Fe 2f 2.66 .
3 Co 2e 8 Fe 2f 4.57 .
3 Co 2e 9 Fe 2c 2.64 .
3 Co 2e 10 Fe 2c 2.64 .
4 Co 2e 5 Co 2d 2.64 .
4 Co 2e 6 Co 2d 2.64 .
4 Co 2e 7 Fe 2f 4.57 .
4 Co 2e 8 Fe 2f 2.66 .
4 Co 2e 9 Fe 2c 2.64 .
4 Co 2e 10 Fe 2c 2.64 .
5 Co 2d 6 Co 2d 4.57 .
5 Co 2d 7 Fe 2f 2.64 .
5 Co 2d 8 Fe 2f 2.64 .
5 Co 2d 9 Fe 2c 3.72 .
5 Co 2d 10 Fe 2c 2.66 .
6 Co 2d 7 Fe 2f 2.64 .
6 Co 2d 8 Fe 2f 2.64 .
6 Co 2d 9 Fe 2c 2.66 .
6 Co 2d 10 Fe 2c 3.72 .
7 Fe 2f 8 Fe 2f 3.72 .
7 Fe 2f 9 Fe 2c 2.64 .
7 Fe 2f 10 Fe 2c 2.64 .
8 Fe 2f 9 Fe 2c 2.64 .
8 Fe 2f 10 Fe 2c 2.64 .
9 Fe 2c 10 Fe 2c 4.57 .
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) = (16, 16, 8) 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

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