Material:

CrFe3As2

ID:

MMD-2254

Explore database:

Compounds with the same formula: CrFe3As2 (1 entry found)
Compounds with the same elements: Cr-Fe-As (5 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

115

Hermann-Mauguin

P-4m2

Hall

P -4 -2

Point group

-42m

Structure data:

Normalized formula

CrFe3As2

The number of formula units per unit cell

1

The total number of atoms per unit cell

6

The number of inequivalent sites per unit cell

4

Structure search

MP

Lattice parameters:

a (Å)

3.6668

b (Å)

3.6668

c (Å)

6.0550

α (deg.)

90.000

β (deg.)

90.000

γ (deg.)

90.000

Volume (Å3)

81.410

Density (g/cm3)

7.534

Crystal structure visualization:

Thermodynamic properties:

DFT calculations (details)

Formation energy (vs. elemental phases)

-22.1 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: CrFe3As2

1 entry found

Compounds with the same elements: Cr-Fe-As

5 entries found

Binary compounds in Cr-Fe system

8 entries found

Binary compounds in Cr-As system

9 entries found

Binary compounds in Fe-As system

4 entries found

Magnetic properties:

DFT calculations (details)

Magnetic ordering

Ferromagnetic

Total magnetic moment

8.34 μB/cell

Averaged magnetic moment

1.39 μB/atom

Magnetic polarization, Js = μ0Ms

1.19 T (= 947.0 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 1b 0.500000 0.500000 0.000000 1.44 . .
2 Fe 2g 0.000000 0.500000 0.675889 2.49 . .
3 Fe 2g 0.500000 0.000000 0.324111 2.49 . .
4 Fe 1a 0.000000 0.000000 0.000000 1.87 . .
5 As 2g 0.000000 0.500000 0.273016 -0.04 . .
6 As 2g 0.500000 0.000000 0.726984 -0.04 . .
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 1b 2 Fe 2g 2.69 .
1 Cr 1b 3 Fe 2g 2.69 .
1 Cr 1b 4 Fe 1a 2.59 .
1 Cr 1b 5 As 2g 2.47 .
1 Cr 1b 6 As 2g 2.47 .
2 Fe 2g 3 Fe 2g 3.36 .
2 Fe 2g 4 Fe 1a 2.69 .
2 Fe 2g 5 As 2g 2.44 .
2 Fe 2g 6 As 2g 2.61 .
3 Fe 2g 4 Fe 1a 2.69 .
3 Fe 2g 5 As 2g 2.61 .
3 Fe 2g 6 As 2g 2.44 .
4 Fe 1a 5 As 2g 2.47 .
4 Fe 1a 6 As 2g 2.47 .
5 As 2g 6 As 2g 3.78 .
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-1226210
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