Material:

SiNi

ID:

MMD-1593

Explore database:

Compounds with the same formula: SiNi (3 entries found)
Compounds with the same elements: Si-Ni (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

orthorhombic

Space group number

62

Hermann-Mauguin

Pnma

Hall

-P 2ac 2n

Point group

mmm

Structure data:

Normalized formula

SiNi

The number of formula units per unit cell

4

The total number of atoms per unit cell

8

The number of inequivalent sites per unit cell

2

Structure search

MP

Lattice parameters:

a (Å)

5.4126

b (Å)

3.1020

c (Å)

5.7884

α (deg.)

90.000

β (deg.)

90.000

γ (deg.)

90.000

Volume (Å3)

97.186

Density (g/cm3)

5.931

Crystal structure visualization:

Thermodynamic properties:

DFT calculations (details)

Formation energy (vs. elemental phases)

-492.8 meV/atom

Formation energy above hull

0 meV, (stable)

Phase diagram:

Phase diagram

Related structures:

Compounds with the same formula: SiNi

3 entries found

Compounds with the same elements: Si-Ni

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 Si 4c 0.750000 0.817557 0.932002 -0.00 . .
2 Si 4c 0.250000 0.682443 0.432002 -0.00 . .
3 Si 4c 0.250000 0.182443 0.067998 -0.00 . .
4 Si 4c 0.750000 0.317557 0.567998 -0.00 . .
5 Ni 4c 0.750000 0.994168 0.310139 0.00 . .
6 Ni 4c 0.250000 0.005832 0.689861 0.00 . .
7 Ni 4c 0.750000 0.494168 0.189861 0.00 . .
8 Ni 4c 0.250000 0.505832 0.810139 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 Si 4c 2 Si 4c 3.98 .
1 Si 4c 3 Si 4c 3.04 .
1 Si 4c 4 Si 4c 2.62 .
1 Si 4c 5 Ni 4c 2.26 .
1 Si 4c 6 Ni 4c 3.10 .
1 Si 4c 7 Ni 4c 1.80 .
1 Si 4c 8 Ni 4c 2.96 .
2 Si 4c 3 Si 4c 2.62 .
2 Si 4c 4 Si 4c 3.04 .
2 Si 4c 5 Ni 4c 2.96 .
2 Si 4c 6 Ni 4c 1.80 .
2 Si 4c 7 Ni 4c 3.10 .
2 Si 4c 8 Ni 4c 2.26 .
3 Si 4c 4 Si 4c 3.98 .
3 Si 4c 5 Ni 4c 3.10 .
3 Si 4c 6 Ni 4c 2.26 .
3 Si 4c 7 Ni 4c 2.96 .
3 Si 4c 8 Ni 4c 1.80 .
4 Si 4c 5 Ni 4c 1.80 .
4 Si 4c 6 Ni 4c 2.96 .
4 Si 4c 7 Ni 4c 2.26 .
4 Si 4c 8 Ni 4c 3.10 .
5 Ni 4c 6 Ni 4c 3.49 .
5 Ni 4c 7 Ni 4c 1.70 .
5 Ni 4c 8 Ni 4c 4.24 .
6 Ni 4c 7 Ni 4c 4.24 .
6 Ni 4c 8 Ni 4c 1.70 .
7 Ni 4c 8 Ni 4c 3.49 .
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-351
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