NovoMag Database

Material:

Fe₇CoN

ID:

MMD-371

Explore database:

Compounds with the same formula: Fe₇CoN (10 entries found)

Compounds with the same elements: Fe-Co-N (272 entries found)

Space group:

Crystal system	tetragonal
Space group number	123
Hermann-Mauguin	P4/mmm
Hall	-P 4 2
Point group	4/mmm

Structure data:

Normalized formula	Fe₇CoN
The number of formula units per unit cell	1
The total number of atoms per unit cell	9
The number of inequivalent sites per unit cell	6
Structure search	AGA search

Lattice parameters:

a (Å)	2.8400
b (Å)	2.8400
c (Å)	12.2230
α (deg.)	90.000
β (deg.)	90.000
γ (deg.)	90.000
Volume (Å³)	98.586
Density (g/cm³)	7.813

Crystal structure visualization:

Thermodynamic properties:

	DFT calculations (details)
Formation energy (vs. elemental phases)	-9.8 meV/atom
Formation energy above hull	42.9 meV/atom

Phase diagram:

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

Related structures:

Compounds with the same formula: Fe₇CoN	10 entries found
Compounds with the same elements: Fe-Co-N	272 entries found
Binary compounds in Fe-Co system	11 entries found
Binary compounds in Fe-N system	38 entries found
Binary compounds in Co-N system	183 entries found

Magnetic properties:

	DFT calculations (details)
Magnetic ordering	Ferromagnetic
Total magnetic moment	17.88 μ_B/cell
Averaged magnetic moment	1.99 μ_B/atom
Magnetic polarization, J_s = μ₀M_s	2.11 T (= 1679.1 emu/cm³)

	LMTO-GF calculations (details)
Curie temperature, T_C

	DFT calculations (details)
Magnetic anisotropy constant, K^a-c	-0.73 MJ/m³ (= -0.45 meV/cell)
Magnetic easy axis	ab plane
Magnetic hardness parameter, κ	0.46

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	N	1a	0.000000	0.000000	0.000000	-0.03	.	.
2	Co	1d	0.500000	0.500000	0.500000	1.83	.	.
3	Fe	2h	0.500000	0.500000	0.264270	2.27	.	.
4	Fe	2h	0.500000	0.500000	0.735730	2.27	.	.
5	Fe	2g	0.000000	0.000000	0.150880	1.91	.	.
6	Fe	2g	0.000000	0.000000	0.849120	1.91	.	.
7	Fe	2g	0.000000	0.000000	0.616090	2.44	.	.
8	Fe	2g	0.000000	0.000000	0.383910	2.44	.	.
9	Fe	1c	0.500000	0.500000	0.000000	1.78	.	.

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	N	1a	2	Co	1d	6.43	.
1	N	1a	3	Fe	2h	3.80	.
1	N	1a	4	Fe	2h	3.80	.
1	N	1a	5	Fe	2g	1.84	.
1	N	1a	6	Fe	2g	1.84	.
1	N	1a	7	Fe	2g	4.69	.
1	N	1a	8	Fe	2g	4.69	.
1	N	1a	9	Fe	1c	2.01	.
2	Co	1d	3	Fe	2h	2.88	.
2	Co	1d	4	Fe	2h	2.88	.
2	Co	1d	5	Fe	2g	4.72	.
2	Co	1d	6	Fe	2g	4.72	.
2	Co	1d	7	Fe	2g	2.46	.
2	Co	1d	8	Fe	2g	2.46	.
2	Co	1d	9	Fe	1c	6.11	.
3	Fe	2h	4	Fe	2h	5.76	.
3	Fe	2h	5	Fe	2g	2.44	.
3	Fe	2h	6	Fe	2g	5.46	.
3	Fe	2h	7	Fe	2g	4.75	.
3	Fe	2h	8	Fe	2g	2.48	.
3	Fe	2h	9	Fe	1c	3.23	.
4	Fe	2h	5	Fe	2g	5.46	.
4	Fe	2h	6	Fe	2g	2.44	.
4	Fe	2h	7	Fe	2g	2.48	.
4	Fe	2h	8	Fe	2g	4.75	.
4	Fe	2h	9	Fe	1c	3.23	.
5	Fe	2g	6	Fe	2g	3.69	.
5	Fe	2g	7	Fe	2g	5.69	.
5	Fe	2g	8	Fe	2g	2.85	.
5	Fe	2g	9	Fe	1c	2.73	.
6	Fe	2g	7	Fe	2g	2.85	.
6	Fe	2g	8	Fe	2g	5.69	.
6	Fe	2g	9	Fe	1c	2.73	.
7	Fe	2g	8	Fe	2g	2.84	.
7	Fe	2g	9	Fe	1c	5.10	.
8	Fe	2g	9	Fe	1c	5.10	.

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) = (22, 22, 6) 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)

Material:

Fe7CoN

ID:

MMD-371

Explore database:

Compounds with the same formula: Fe7CoN (10 entries found)

Compounds with the same elements: Fe-Co-N (272 entries found)

Space group:

Crystal system

tetragonal

Space group number

123

Hermann-Mauguin

P4/mmm

Hall

-P 4 2

Point group

4/mmm

Structure data:

Normalized formula

Fe7CoN

The number of formula units per unit cell

1

The total number of atoms per unit cell

9

The number of inequivalent sites per unit cell

6

Structure search

AGA search

Lattice parameters:

a (Å)

2.8400

b (Å)

2.8400

c (Å)

12.2230

α (deg.)

90.000

β (deg.)

90.000

γ (deg.)

90.000

Volume (Å3)

98.586

Density (g/cm3)

7.813

Crystal structure visualization:

Thermodynamic properties:

Formation energy (vs. elemental phases)

-9.8 meV/atom

Formation energy above hull

42.9 meV/atom

Phase diagram:

Related structures:

Compounds with the same formula: Fe7CoN

10 entries found

Compounds with the same elements: Fe-Co-N

272 entries found

Binary compounds in Fe-Co system

11 entries found

Binary compounds in Fe-N system

38 entries found

Binary compounds in Co-N system

183 entries found

Magnetic properties:

Magnetic ordering

Ferromagnetic

Total magnetic moment

17.88 μB/cell

Averaged magnetic moment

1.99 μB/atom

Magnetic polarization, Js = μ0Ms

2.11 T (= 1679.1 emu/cm3)

Curie temperature, TC

Magnetic anisotropy constant, Ka-c

-0.73 MJ/m3 (= -0.45 meV/cell)

Magnetic easy axis

ab plane

Magnetic hardness parameter, κ

0.46

Fe₇CoN

Compounds with the same formula: Fe₇CoN (10 entries found)

Fe₇CoN

Volume (Å³)

Density (g/cm³)

Compounds with the same formula: Fe₇CoN

17.88 μ_B/cell

1.99 μ_B/atom

Magnetic polarization, J_s = μ₀M_s

2.11 T (= 1679.1 emu/cm³)

Curie temperature, T_C

Magnetic anisotropy constant, K^a-c

-0.73 MJ/m³ (= -0.45 meV/cell)