NovoMag Database

Material:

Co₃Ni

ID:

MMD-1326

Explore database:

Compounds with the same formula: Co₃Ni (3 entries found)

Compounds with the same elements: Co-Ni (8 entries found)

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	Co₃Ni
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	2
Structure search	MP

Lattice parameters:

a (Å)	4.9856
b (Å)	4.9856
c (Å)	4.0277
α (deg.)	90.000
β (deg.)	90.000
γ (deg.)	120.000
Volume (Å³)	86.701
Density (g/cm³)	9.021

Crystal structure visualization:

Thermodynamic properties:

	DFT calculations (details)
Formation energy (vs. elemental phases)	-24.9 meV/atom
Formation energy above hull	0 meV, (stable)

Phase diagram:

Related structures:

Compounds with the same formula: Co₃Ni	3 entries found
Compounds with the same elements: Co-Ni	8 entries found

Magnetic properties:

	DFT calculations (details)
Magnetic ordering	Ferromagnetic
Total magnetic moment	11.29 μ_B/cell
Averaged magnetic moment	1.41 μ_B/atom
Magnetic polarization, J_s = μ₀M_s	1.52 T (= 1209.6 emu/cm³)

	LMTO-GF calculations (details)
Curie temperature, T_C

	DFT calculations (details)
Magnetic anisotropy constant, K^a-c	-0.00 MJ/m³ (= -0.00 meV/cell)
Magnetic easy axis	ab plane
Magnetic hardness parameter, κ	0.05

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

index	species	w	x	y	z	m (μ_B)	E^soc₁₀₀ (meV)	E^soc₀₀₁ (meV)
1	Co	6h	0.166145	0.332290	0.250000	1.74	.	.
2	Co	6h	0.833855	0.166145	0.750000	1.74	.	.
3	Co	6h	0.332290	0.166145	0.750000	1.74	.	.
4	Co	6h	0.833855	0.667710	0.750000	1.74	.	.
5	Co	6h	0.166145	0.833855	0.250000	1.74	.	.
6	Co	6h	0.667710	0.833855	0.250000	1.74	.	.
7	Ni	2d	0.666667	0.333333	0.250000	0.70	.	.
8	Ni	2d	0.333333	0.666667	0.750000	0.70	.	.

w: site multiplicity (the number of equivalent positions) and Wyckoff letter (a label for site symmetry)
m: local magnetic moment
E^soc_{100 (001)}: Spin-orbit coupling energy for the magnetization oriented along the crystallographic a (c) axis
(Individual E^soc values are temporarily not available while we perform maintenance.)

Terms and conditions

Site-resolved magnetic moments:

Pair-wise magnetic data:

site i			site j			distance (Å)	J_ij (meV)
1	Co	6h	2	Co	6h	2.47	.
1	Co	6h	3	Co	6h	2.47	.
1	Co	6h	4	Co	6h	3.51	.
1	Co	6h	5	Co	6h	2.48	.
1	Co	6h	6	Co	6h	2.48	.
1	Co	6h	7	Ni	2d	2.49	.
1	Co	6h	8	Ni	2d	2.48	.
2	Co	6h	3	Co	6h	2.48	.
2	Co	6h	4	Co	6h	2.48	.
2	Co	6h	5	Co	6h	3.51	.
2	Co	6h	6	Co	6h	2.47	.
2	Co	6h	7	Ni	2d	2.48	.
2	Co	6h	8	Ni	2d	2.49	.
3	Co	6h	4	Co	6h	2.48	.
3	Co	6h	5	Co	6h	2.47	.
3	Co	6h	6	Co	6h	3.51	.
3	Co	6h	7	Ni	2d	2.48	.
3	Co	6h	8	Ni	2d	2.49	.
4	Co	6h	5	Co	6h	2.47	.
4	Co	6h	6	Co	6h	2.47	.
4	Co	6h	7	Ni	2d	2.48	.
4	Co	6h	8	Ni	2d	2.49	.
5	Co	6h	6	Co	6h	2.48	.
5	Co	6h	7	Ni	2d	2.49	.
5	Co	6h	8	Ni	2d	2.48	.
6	Co	6h	7	Ni	2d	2.49	.
6	Co	6h	8	Ni	2d	2.48	.
7	Ni	2d	8	Ni	2d	3.51	.

J_ij: magnetic exchange parameter between site i and j (Individual J_ij values are temporarily not available while we perform maintenance.)

Terms and conditions

Pair-resolved magnetic exchange parameters:

Individual exchange parameters:

Methods:

DFT calculations

exchange-correlation energy functional: GGA-PBE
pseudopotential type: PAW
cutoff energy: 65.0 Ry
k-point grid: (kx, ky, kz) = (14, 14, 16) for magnetic anisotropy calculations
package: QE (v6.3)

Material:

Co3Ni

ID:

MMD-1326

Explore database:

Compounds with the same formula: Co3Ni (3 entries found)

Compounds with the same elements: Co-Ni (8 entries found)

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

Co3Ni

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

2

Structure search

MP

Lattice parameters:

a (Å)

4.9856

b (Å)

4.9856

c (Å)

4.0277

α (deg.)

90.000

β (deg.)

90.000

γ (deg.)

120.000

Volume (Å3)

86.701

Density (g/cm3)

9.021

Crystal structure visualization:

Thermodynamic properties:

Formation energy (vs. elemental phases)

-24.9 meV/atom

Formation energy above hull

0 meV, (stable)

Phase diagram:

Related structures:

Compounds with the same formula: Co3Ni

3 entries found

Compounds with the same elements: Co-Ni

8 entries found

Magnetic properties:

Magnetic ordering

Ferromagnetic

Total magnetic moment

11.29 μB/cell

Averaged magnetic moment

1.41 μB/atom

Magnetic polarization, Js = μ0Ms

1.52 T (= 1209.6 emu/cm3)

Curie temperature, TC

Magnetic anisotropy constant, Ka-c

-0.00 MJ/m3 (= -0.00 meV/cell)

Magnetic easy axis

ab plane

Magnetic hardness parameter, κ

0.05

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

Site-resolved magnetic moments:

Pair-wise magnetic data:

Pair-resolved magnetic exchange parameters:

Individual exchange parameters:

Methods:

Co₃Ni

Compounds with the same formula: Co₃Ni (3 entries found)

Co₃Ni

Volume (Å³)

Density (g/cm³)

Compounds with the same formula: Co₃Ni

11.29 μ_B/cell

1.41 μ_B/atom

Magnetic polarization, J_s = μ₀M_s

1.52 T (= 1209.6 emu/cm³)

Curie temperature, T_C

Magnetic anisotropy constant, K^a-c

-0.00 MJ/m³ (= -0.00 meV/cell)