Material:

NbCr2

ID:

MMD-3613

Explore database:

Compounds with the same formula: NbCr2 (4 entries found)
Compounds with the same elements: Nb-Cr (11 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

hexagonal

Space group number

194

Hermann-Mauguin

P6_3/mmc

Hall

-P 6c 2c

Point group

6/mmm

Structure data:

Normalized formula

NbCr2

The number of formula units per unit cell

4

The total number of atoms per unit cell

12

The number of inequivalent sites per unit cell

3

Structure search

MP

Lattice parameters:

a (Å)

4.8950

b (Å)

4.8950

c (Å)

8.1053

α (deg.)

90.000

β (deg.)

90.000

γ (deg.)

120.000

Volume (Å3)

168.195

Density (g/cm3)

7.776

Crystal structure visualization:

Thermodynamic properties:

DFT calculations (details)

Formation energy (vs. elemental phases)

-28.8 meV/atom

Formation energy above hull

16.7 meV/atom

Phase diagram:

Phase diagram

Related structures:

Compounds with the same formula: NbCr2

4 entries found

Compounds with the same elements: Nb-Cr

11 entries found

Magnetic properties:

DFT calculations (details)

Magnetic ordering

non-magnetic

Total magnetic moment

0.00 μB/cell

Averaged magnetic moment

0.00 μB/atom

Magnetic polarization, Js = μ0Ms

0.00 T (= 0.0 emu/cm3)
Data for the Curie temperature are not available for this entry.
Data for the magnetic anisotropy are not available for this entry.

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

index species w x y z m (μB) Esoc100 (meV) Esoc001 (meV)
1 Nb 4f 0.333333 0.666667 0.439297 0.00 . .
2 Nb 4f 0.666667 0.333333 0.560703 0.00 . .
3 Nb 4f 0.666667 0.333333 0.939297 0.00 . .
4 Nb 4f 0.333333 0.666667 0.060703 0.00 . .
5 Cr 2a 0.000000 0.000000 0.500000 0.00 . .
6 Cr 2a 0.000000 0.000000 0.000000 0.00 . .
7 Cr 6h 0.830121 0.169879 0.250000 -0.00 . .
8 Cr 6h 0.830121 0.660242 0.250000 -0.00 . .
9 Cr 6h 0.339758 0.169879 0.250000 -0.00 . .
10 Cr 6h 0.169879 0.830121 0.750000 -0.00 . .
11 Cr 6h 0.169879 0.339758 0.750000 -0.00 . .
12 Cr 6h 0.660242 0.830121 0.750000 -0.00 . .
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 Nb 4f 2 Nb 4f 2.99 .
1 Nb 4f 3 Nb 4f 4.94 .
1 Nb 4f 4 Nb 4f 3.07 .
1 Nb 4f 5 Cr 2a 2.87 .
1 Nb 4f 6 Cr 2a 4.55 .
1 Nb 4f 7 Cr 6h 2.89 .
1 Nb 4f 8 Cr 6h 2.89 .
1 Nb 4f 9 Cr 6h 2.89 .
1 Nb 4f 10 Cr 6h 2.87 .
1 Nb 4f 11 Cr 6h 2.87 .
1 Nb 4f 12 Cr 6h 2.87 .
2 Nb 4f 3 Nb 4f 3.07 .
2 Nb 4f 4 Nb 4f 4.94 .
2 Nb 4f 5 Cr 2a 2.87 .
2 Nb 4f 6 Cr 2a 4.55 .
2 Nb 4f 7 Cr 6h 2.87 .
2 Nb 4f 8 Cr 6h 2.87 .
2 Nb 4f 9 Cr 6h 2.87 .
2 Nb 4f 10 Cr 6h 2.89 .
2 Nb 4f 11 Cr 6h 2.89 .
2 Nb 4f 12 Cr 6h 2.89 .
3 Nb 4f 4 Nb 4f 2.99 .
3 Nb 4f 5 Cr 2a 4.55 .
3 Nb 4f 6 Cr 2a 2.87 .
3 Nb 4f 7 Cr 6h 2.87 .
3 Nb 4f 8 Cr 6h 2.87 .
3 Nb 4f 9 Cr 6h 2.87 .
3 Nb 4f 10 Cr 6h 2.89 .
3 Nb 4f 11 Cr 6h 2.89 .
3 Nb 4f 12 Cr 6h 2.89 .
4 Nb 4f 5 Cr 2a 4.55 .
4 Nb 4f 6 Cr 2a 2.87 .
4 Nb 4f 7 Cr 6h 2.89 .
4 Nb 4f 8 Cr 6h 2.89 .
4 Nb 4f 9 Cr 6h 2.89 .
4 Nb 4f 10 Cr 6h 2.87 .
4 Nb 4f 11 Cr 6h 2.87 .
4 Nb 4f 12 Cr 6h 2.87 .
5 Cr 2a 6 Cr 2a 4.05 .
5 Cr 2a 7 Cr 6h 2.49 .
5 Cr 2a 8 Cr 6h 2.49 .
5 Cr 2a 9 Cr 6h 2.49 .
5 Cr 2a 10 Cr 6h 2.49 .
5 Cr 2a 11 Cr 6h 2.49 .
5 Cr 2a 12 Cr 6h 2.49 .
6 Cr 2a 7 Cr 6h 2.49 .
6 Cr 2a 8 Cr 6h 2.49 .
6 Cr 2a 9 Cr 6h 2.49 .
6 Cr 2a 10 Cr 6h 2.49 .
6 Cr 2a 11 Cr 6h 2.49 .
6 Cr 2a 12 Cr 6h 2.49 .
7 Cr 6h 8 Cr 6h 2.40 .
7 Cr 6h 9 Cr 6h 2.40 .
7 Cr 6h 10 Cr 6h 4.93 .
7 Cr 6h 11 Cr 6h 4.30 .
7 Cr 6h 12 Cr 6h 4.30 .
8 Cr 6h 9 Cr 6h 2.40 .
8 Cr 6h 10 Cr 6h 4.30 .
8 Cr 6h 11 Cr 6h 4.93 .
8 Cr 6h 12 Cr 6h 4.30 .
9 Cr 6h 10 Cr 6h 4.30 .
9 Cr 6h 11 Cr 6h 4.30 .
9 Cr 6h 12 Cr 6h 4.93 .
10 Cr 6h 11 Cr 6h 2.40 .
10 Cr 6h 12 Cr 6h 2.40 .
11 Cr 6h 12 Cr 6h 2.40 .
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:


Diagram is not available for this entry.

Individual exchange parameters:


Diagram is not available for this entry.

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-1095643
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