Material:

CrGaFe2

ID:

MMD-2256

Explore database:

Compounds with the same formula: CrGaFe2 (2 entries found)
Compounds with the same elements: Cr-Ga-Fe (3 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

orthorhombic

Space group number

35

Hermann-Mauguin

Cmm2

Hall

C 2 -2

Point group

mm2

Structure data:

Normalized formula

CrGaFe2

The number of formula units per unit cell

2

The total number of atoms per unit cell

8

The number of inequivalent sites per unit cell

4

Structure search

MP

Lattice parameters:

a (Å)

2.9998

b (Å)

4.1210

c (Å)

7.9987

α (deg.)

90.000

β (deg.)

90.000

γ (deg.)

90.000

Volume (Å3)

98.883

Density (g/cm3)

7.839

Crystal structure visualization:

Thermodynamic properties:

DFT calculations (details)

Formation energy (vs. elemental phases)

78.3 meV/atom

Formation energy above hull

Phase diagram:

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

Related structures:

Compounds with the same formula: CrGaFe2

2 entries found

Compounds with the same elements: Cr-Ga-Fe

3 entries found

Binary compounds in Cr-Ga system

3 entries found

Binary compounds in Cr-Fe system

8 entries found

Binary compounds in Ga-Fe system

11 entries found

Magnetic properties:

DFT calculations (details)

Magnetic ordering

Ferromagnetic

Total magnetic moment

8.37 μB/cell

Averaged magnetic moment

1.05 μB/atom

Magnetic polarization, Js = μ0Ms

0.99 T (= 787.8 emu/cm3)
LMTO-GF calculations (details)

Curie temperature, TC

DFT calculations (details)

Magnetic easy axis

Magnetic hardness parameter, κ

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

index species w x y z m (μB) Esoc100 (meV) Esoc001 (meV)
1 Cr 2a 0.000000 0.000000 0.007816 -0.22 . .
2 Cr 2a 0.500000 0.500000 0.007816 -0.21 . .
3 Ga 2b 0.500000 0.000000 0.748183 -0.03 . .
4 Ga 2b 0.000000 0.500000 0.748183 -0.03 . .
5 Fe 2a 0.000000 0.000000 0.493943 2.28 . .
6 Fe 2a 0.500000 0.000000 0.250058 2.24 . .
7 Fe 2b 0.500000 0.500000 0.493943 2.28 . .
8 Fe 2b 0.000000 0.500000 0.250058 2.24 . .
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 Cr 2a 2 Cr 2a 2.55 .
1 Cr 2a 3 Ga 2b 2.56 .
1 Cr 2a 4 Ga 2b 2.93 .
1 Cr 2a 5 Fe 2a 3.89 .
1 Cr 2a 6 Fe 2a 2.45 .
1 Cr 2a 7 Fe 2b 4.65 .
1 Cr 2a 8 Fe 2b 2.83 .
2 Cr 2a 3 Ga 2b 2.93 .
2 Cr 2a 4 Ga 2b 2.56 .
2 Cr 2a 5 Fe 2a 4.65 .
2 Cr 2a 6 Fe 2a 2.83 .
2 Cr 2a 7 Fe 2b 3.89 .
2 Cr 2a 8 Fe 2b 2.45 .
3 Ga 2b 4 Ga 2b 2.55 .
3 Ga 2b 5 Fe 2a 2.53 .
3 Ga 2b 6 Fe 2a 3.98 .
3 Ga 2b 7 Fe 2b 2.90 .
3 Ga 2b 8 Fe 2b 4.73 .
4 Ga 2b 5 Fe 2a 2.90 .
4 Ga 2b 6 Fe 2a 4.73 .
4 Ga 2b 7 Fe 2b 2.53 .
4 Ga 2b 8 Fe 2b 3.98 .
5 Fe 2a 6 Fe 2a 2.46 .
5 Fe 2a 7 Fe 2b 2.55 .
5 Fe 2a 8 Fe 2b 2.84 .
6 Fe 2a 7 Fe 2b 2.84 .
6 Fe 2a 8 Fe 2b 2.55 .
7 Fe 2b 8 Fe 2b 2.46 .
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) = (None, None, None) 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-1226220
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