Material:

CrN2

ID:

MMD-3594

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

trigonal

Space group number

154

Hermann-Mauguin

P3_221

Hall

P 32 2"

Point group

32

Structure data:

Normalized formula

CrN2

The number of formula units per unit cell

3

The total number of atoms per unit cell

9

The number of inequivalent sites per unit cell

2

Structure search

MP

Lattice parameters:

a (Å)

4.1690

b (Å)

4.1690

c (Å)

4.6827

α (deg.)

90.000

β (deg.)

90.000

γ (deg.)

120.000

Volume (Å3)

70.484

Density (g/cm3)

5.655

Crystal structure visualization:

Thermodynamic properties:

DFT calculations (details)

Formation energy (vs. elemental phases)

221.8 meV/atom

Formation energy above hull

575.6 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

3.54 μB/cell

Averaged magnetic moment

0.39 μB/atom

Magnetic polarization, Js = μ0Ms

0.59 T (= 469.5 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 3a 0.621064 0.621064 0.000000 1.12 . .
2 Cr 3a 0.378936 0.000000 0.666667 1.12 . .
3 Cr 3a 0.000000 0.378936 0.333333 1.12 . .
4 N 6c 0.652137 0.808968 0.419943 -0.04 . .
5 N 6c 0.191032 0.843170 0.086610 -0.04 . .
6 N 6c 0.156830 0.347863 0.753277 -0.04 . .
7 N 6c 0.808968 0.652137 0.580057 -0.04 . .
8 N 6c 0.843170 0.191032 0.913390 -0.04 . .
9 N 6c 0.347863 0.156830 0.246723 -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 3a 2 Cr 3a 2.75 .
1 Cr 3a 3 Cr 3a 2.75 .
1 Cr 3a 4 N 6c 2.10 .
1 Cr 3a 5 N 6c 2.11 .
1 Cr 3a 6 N 6c 2.04 .
1 Cr 3a 7 N 6c 2.10 .
1 Cr 3a 8 N 6c 2.11 .
1 Cr 3a 9 N 6c 2.04 .
2 Cr 3a 3 Cr 3a 2.75 .
2 Cr 3a 4 N 6c 2.04 .
2 Cr 3a 5 N 6c 2.10 .
2 Cr 3a 6 N 6c 2.11 .
2 Cr 3a 7 N 6c 2.11 .
2 Cr 3a 8 N 6c 2.04 .
2 Cr 3a 9 N 6c 2.10 .
3 Cr 3a 4 N 6c 2.11 .
3 Cr 3a 5 N 6c 2.04 .
3 Cr 3a 6 N 6c 2.10 .
3 Cr 3a 7 N 6c 2.04 .
3 Cr 3a 8 N 6c 2.10 .
3 Cr 3a 9 N 6c 2.11 .
4 N 6c 5 N 6c 2.54 .
4 N 6c 6 N 6c 2.54 .
4 N 6c 7 N 6c 1.36 .
4 N 6c 8 N 6c 2.69 .
4 N 6c 9 N 6c 2.49 .
5 N 6c 6 N 6c 2.54 .
5 N 6c 7 N 6c 2.69 .
5 N 6c 8 N 6c 2.49 .
5 N 6c 9 N 6c 1.36 .
6 N 6c 7 N 6c 2.49 .
6 N 6c 8 N 6c 1.36 .
6 N 6c 9 N 6c 2.69 .
7 N 6c 8 N 6c 2.54 .
7 N 6c 9 N 6c 2.54 .
8 N 6c 9 N 6c 2.54 .
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-1015908
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