Material:

CrN2

ID:

MMD-3611

Explore database:

Compounds with the same formula: CrN2 (63 entries found)
Compounds with the same elements: Cr-N (85 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

58

Hermann-Mauguin

Pnnm

Hall

-P 2 2n

Point group

mmm

Structure data:

Normalized formula

CrN2

The number of formula units per unit cell

2

The total number of atoms per unit cell

6

The number of inequivalent sites per unit cell

2

Structure search

MP

Lattice parameters:

a (Å)

3.9018

b (Å)

4.8095

c (Å)

2.7842

α (deg.)

90.000

β (deg.)

90.000

γ (deg.)

90.000

Volume (Å3)

52.247

Density (g/cm3)

5.086

Crystal structure visualization:

Thermodynamic properties:

DFT calculations (details)

Formation energy (vs. elemental phases)

-71.8 meV/atom

Formation energy above hull

282.0 meV/atom

Phase diagram:

Phase diagram

Related structures:

Compounds with the same formula: CrN2

63 entries found

Compounds with the same elements: Cr-N

85 entries found

Magnetic properties:

DFT calculations (details)

Magnetic ordering

Ferromagnetic

Total magnetic moment

4.23 μB/cell

Averaged magnetic moment

0.71 μB/atom

Magnetic polarization, Js = μ0Ms

0.94 T (= 748.0 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 2a 0.500000 0.500000 0.500000 1.90 . .
2 Cr 2a 0.000000 0.000000 0.000000 1.90 . .
3 N 4g 0.500000 0.633830 0.088775 -0.06 . .
4 N 4g 0.500000 0.366170 0.911225 -0.06 . .
5 N 4g 0.000000 0.133830 0.411225 -0.06 . .
6 N 4g 0.000000 0.866170 0.588775 -0.06 . .
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 3.40 .
1 Cr 2a 3 N 4g 1.31 .
1 Cr 2a 4 N 4g 1.31 .
1 Cr 2a 5 N 4g 2.64 .
1 Cr 2a 6 N 4g 2.64 .
2 Cr 2a 3 N 4g 2.64 .
2 Cr 2a 4 N 4g 2.64 .
2 Cr 2a 5 N 4g 1.31 .
2 Cr 2a 6 N 4g 1.31 .
3 N 4g 4 N 4g 1.38 .
3 N 4g 5 N 4g 3.22 .
3 N 4g 6 N 4g 2.64 .
4 N 4g 5 N 4g 2.64 .
4 N 4g 6 N 4g 3.22 .
5 N 4g 6 N 4g 1.38 .
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-1080200
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