Material:

MnGaNi2

ID:

MMD-2773

Explore database:

Compounds with the same formula: MnGaNi2 (4 entries found)
Compounds with the same elements: Mn-Ga-Ni (10 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

139

Hermann-Mauguin

I4/mmm

Hall

-I 4 2

Point group

4/mmm

Structure data:

Normalized formula

MnGaNi2

The number of formula units per unit cell

2

The total number of atoms per unit cell

8

The number of inequivalent sites per unit cell

3

Structure search

MP

Lattice parameters:

a (Å)

3.8371

b (Å)

3.8371

c (Å)

6.5954

α (deg.)

90.000

β (deg.)

90.000

γ (deg.)

90.000

Volume (Å3)

97.107

Density (g/cm3)

8.278

Crystal structure visualization:

Thermodynamic properties:

DFT calculations (details)

Formation energy (vs. elemental phases)

-274.1 meV/atom

Formation energy above hull

0 meV, (stable)

Phase diagram:

Phase diagram
The convex hull is temporarily not available while we perform maintenance.

Related structures:

Compounds with the same formula: MnGaNi2

4 entries found

Compounds with the same elements: Mn-Ga-Ni

10 entries found

Binary compounds in Mn-Ga system

13 entries found

Binary compounds in Mn-Ni system

5 entries found

Binary compounds in Ga-Ni system

13 entries found

Magnetic properties:

DFT calculations (details)

Magnetic ordering

Ferromagnetic

Total magnetic moment

8.30 μB/cell

Averaged magnetic moment

1.04 μB/atom

Magnetic polarization, Js = μ0Ms

1.00 T (= 795.8 emu/cm3)
LMTO-GF calculations (details)

Curie temperature, TC

DFT calculations (details)

Magnetic anisotropy constant, Ka-c

-1.56 MJ/m3 (= -0.95 meV/cell)

Magnetic easy axis

ab plane

Magnetic hardness parameter, κ

1.41

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

index species w x y z m (μB) Esoc100 (meV) Esoc001 (meV)
1 Mn 2b 0.500000 0.500000 0.000000 3.25 . .
2 Mn 2b 0.000000 0.000000 0.500000 3.25 . .
3 Ga 2a 0.000000 0.000000 0.000000 -0.04 . .
4 Ga 2a 0.500000 0.500000 0.500000 -0.04 . .
5 Ni 4d 0.500000 0.000000 0.750000 0.45 . .
6 Ni 4d 0.000000 0.500000 0.750000 0.45 . .
7 Ni 4d 0.000000 0.500000 0.250000 0.45 . .
8 Ni 4d 0.500000 0.000000 0.250000 0.45 . .
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 Mn 2b 2 Mn 2b 4.27 .
1 Mn 2b 3 Ga 2a 2.71 .
1 Mn 2b 4 Ga 2a 3.30 .
1 Mn 2b 5 Ni 4d 2.53 .
1 Mn 2b 6 Ni 4d 2.53 .
1 Mn 2b 7 Ni 4d 2.53 .
1 Mn 2b 8 Ni 4d 2.53 .
2 Mn 2b 3 Ga 2a 3.30 .
2 Mn 2b 4 Ga 2a 2.71 .
2 Mn 2b 5 Ni 4d 2.53 .
2 Mn 2b 6 Ni 4d 2.53 .
2 Mn 2b 7 Ni 4d 2.53 .
2 Mn 2b 8 Ni 4d 2.53 .
3 Ga 2a 4 Ga 2a 4.27 .
3 Ga 2a 5 Ni 4d 2.53 .
3 Ga 2a 6 Ni 4d 2.53 .
3 Ga 2a 7 Ni 4d 2.53 .
3 Ga 2a 8 Ni 4d 2.53 .
4 Ga 2a 5 Ni 4d 2.53 .
4 Ga 2a 6 Ni 4d 2.53 .
4 Ga 2a 7 Ni 4d 2.53 .
4 Ga 2a 8 Ni 4d 2.53 .
5 Ni 4d 6 Ni 4d 2.71 .
5 Ni 4d 7 Ni 4d 4.27 .
5 Ni 4d 8 Ni 4d 3.30 .
6 Ni 4d 7 Ni 4d 3.30 .
6 Ni 4d 8 Ni 4d 4.27 .
7 Ni 4d 8 Ni 4d 2.71 .
Jij: magnetic exchange parameter between site i and j (Individual Jij values are temporarily not available while we perform maintenance.)
Export data (under construction)
  • csv
  • json
  • yaml
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) = (16, 16, 10) 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-601285
You can download and use the data of this database for your scientific work, provided that you express proper acknowledgements: