Crystal system |
tetragonal |
Space group number |
139 |
Hermann-Mauguin |
I4/mmm |
Hall |
-I 4 2 |
Point group |
4/mmm |
Normalized formula |
FeCo7N2 |
The number of formula units per unit cell |
2 |
The total number of atoms per unit cell |
20 |
The number of inequivalent sites per unit cell |
5 |
Structure search |
AGA search |
a (Å) |
3.7263 |
b (Å) |
3.7263 |
c (Å) |
14.8317 |
α (deg.) |
90.000 |
β (deg.) |
90.000 |
γ (deg.) |
90.000 |
Volume (Å3) |
205.942 |
Density (g/cm3) |
8.005 |
DFT calculations (details) | |
---|---|
Formation energy (vs. elemental phases) |
42.6 meV/atom |
Formation energy above hull |
69.2 meV/atom |
Compounds with the same formula: FeCo7N2 |
7 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 |
DFT calculations (details) | |
---|---|
Magnetic ordering |
Ferromagnetic |
Total magnetic moment |
27.32 μB/cell |
Averaged magnetic moment |
1.37 μB/atom |
Magnetic polarization, Js = μ0Ms |
1.55 T (= 1233.5 emu/cm3) |
LMTO-GF calculations (details) | |
---|---|
Curie temperature, TC |
|
DFT calculations (details) | |
---|---|
Magnetic anisotropy constant, Ka-c |
1.62 MJ/m3 (= 2.09 meV/cell) |
Magnetic easy axis |
c |
Magnetic hardness parameter, κ |
0.93 |
index | species | w | x | y | z | m (μB) | Esoc100 (meV) | Esoc001 (meV) |
---|---|---|---|---|---|---|---|---|
1 | N | 4e | 0.000000 | 0.000000 | 0.627600 | 0.10 | . | . |
2 | N | 4e | 0.000000 | 0.000000 | 0.372400 | 0.10 | . | . |
3 | N | 4e | 0.500000 | 0.500000 | 0.127600 | 0.10 | . | . |
4 | N | 4e | 0.500000 | 0.500000 | 0.872400 | 0.10 | . | . |
5 | Co | 4e | 0.000000 | 0.000000 | 0.753120 | 1.63 | . | . |
6 | Co | 4e | 0.000000 | 0.000000 | 0.246880 | 1.63 | . | . |
7 | Co | 4e | 0.500000 | 0.500000 | 0.253120 | 1.63 | . | . |
8 | Co | 4e | 0.500000 | 0.500000 | 0.746880 | 1.63 | . | . |
9 | Co | 8g | 0.000000 | 0.500000 | 0.624300 | 1.36 | . | . |
10 | Co | 8g | 0.000000 | 0.500000 | 0.375700 | 1.36 | . | . |
11 | Co | 8g | 0.500000 | 0.000000 | 0.624300 | 1.36 | . | . |
12 | Co | 8g | 0.500000 | 0.000000 | 0.375700 | 1.36 | . | . |
13 | Co | 8g | 0.500000 | 0.000000 | 0.124300 | 1.36 | . | . |
14 | Co | 8g | 0.500000 | 0.000000 | 0.875700 | 1.36 | . | . |
15 | Co | 8g | 0.000000 | 0.500000 | 0.124300 | 1.36 | . | . |
16 | Co | 8g | 0.000000 | 0.500000 | 0.875700 | 1.36 | . | . |
17 | Co | 2b | 0.000000 | 0.000000 | 0.500000 | 1.40 | . | . |
18 | Co | 2b | 0.500000 | 0.500000 | 0.000000 | 1.40 | . | . |
19 | Fe | 2a | 0.000000 | 0.000000 | 0.000000 | 3.08 | . | . |
20 | Fe | 2a | 0.500000 | 0.500000 | 0.500000 | 3.08 | . | . |
site i | site j | distance (Å) | Jij (meV) | ||||
---|---|---|---|---|---|---|---|
1 | N | 4e | 2 | N | 4e | 3.79 | . |
1 | N | 4e | 3 | N | 4e | 7.87 | . |
1 | N | 4e | 4 | N | 4e | 4.49 | . |
1 | N | 4e | 5 | Co | 4e | 1.86 | . |
1 | N | 4e | 6 | Co | 4e | 5.65 | . |
1 | N | 4e | 7 | Co | 4e | 6.15 | . |
1 | N | 4e | 8 | Co | 4e | 3.17 | . |
1 | N | 4e | 9 | Co | 8g | 1.86 | . |
1 | N | 4e | 10 | Co | 8g | 4.17 | . |
1 | N | 4e | 11 | Co | 8g | 1.86 | . |
1 | N | 4e | 12 | Co | 8g | 4.17 | . |
1 | N | 4e | 13 | Co | 8g | 7.60 | . |
1 | N | 4e | 14 | Co | 8g | 4.12 | . |
1 | N | 4e | 15 | Co | 8g | 7.60 | . |
1 | N | 4e | 16 | Co | 8g | 4.12 | . |
1 | N | 4e | 17 | Co | 2b | 1.89 | . |
1 | N | 4e | 18 | Co | 2b | 6.12 | . |
1 | N | 4e | 19 | Fe | 2a | 5.52 | . |
1 | N | 4e | 20 | Fe | 2a | 3.24 | . |
2 | N | 4e | 3 | N | 4e | 4.49 | . |
2 | N | 4e | 4 | N | 4e | 7.87 | . |
2 | N | 4e | 5 | Co | 4e | 5.65 | . |
2 | N | 4e | 6 | Co | 4e | 1.86 | . |
2 | N | 4e | 7 | Co | 4e | 3.17 | . |
2 | N | 4e | 8 | Co | 4e | 6.15 | . |
2 | N | 4e | 9 | Co | 8g | 4.17 | . |
2 | N | 4e | 10 | Co | 8g | 1.86 | . |
2 | N | 4e | 11 | Co | 8g | 4.17 | . |
2 | N | 4e | 12 | Co | 8g | 1.86 | . |
2 | N | 4e | 13 | Co | 8g | 4.12 | . |
2 | N | 4e | 14 | Co | 8g | 7.60 | . |
2 | N | 4e | 15 | Co | 8g | 4.12 | . |
2 | N | 4e | 16 | Co | 8g | 7.60 | . |
2 | N | 4e | 17 | Co | 2b | 1.89 | . |
2 | N | 4e | 18 | Co | 2b | 6.12 | . |
2 | N | 4e | 19 | Fe | 2a | 5.52 | . |
2 | N | 4e | 20 | Fe | 2a | 3.24 | . |
3 | N | 4e | 4 | N | 4e | 3.79 | . |
3 | N | 4e | 5 | Co | 4e | 6.15 | . |
3 | N | 4e | 6 | Co | 4e | 3.17 | . |
3 | N | 4e | 7 | Co | 4e | 1.86 | . |
3 | N | 4e | 8 | Co | 4e | 5.65 | . |
3 | N | 4e | 9 | Co | 8g | 7.60 | . |
3 | N | 4e | 10 | Co | 8g | 4.12 | . |
3 | N | 4e | 11 | Co | 8g | 7.60 | . |
3 | N | 4e | 12 | Co | 8g | 4.12 | . |
3 | N | 4e | 13 | Co | 8g | 1.86 | . |
3 | N | 4e | 14 | Co | 8g | 4.17 | . |
3 | N | 4e | 15 | Co | 8g | 1.86 | . |
3 | N | 4e | 16 | Co | 8g | 4.17 | . |
3 | N | 4e | 17 | Co | 2b | 6.12 | . |
3 | N | 4e | 18 | Co | 2b | 1.89 | . |
3 | N | 4e | 19 | Fe | 2a | 3.24 | . |
3 | N | 4e | 20 | Fe | 2a | 5.52 | . |
4 | N | 4e | 5 | Co | 4e | 3.17 | . |
4 | N | 4e | 6 | Co | 4e | 6.15 | . |
4 | N | 4e | 7 | Co | 4e | 5.65 | . |
4 | N | 4e | 8 | Co | 4e | 1.86 | . |
4 | N | 4e | 9 | Co | 8g | 4.12 | . |
4 | N | 4e | 10 | Co | 8g | 7.60 | . |
4 | N | 4e | 11 | Co | 8g | 4.12 | . |
4 | N | 4e | 12 | Co | 8g | 7.60 | . |
4 | N | 4e | 13 | Co | 8g | 4.17 | . |
4 | N | 4e | 14 | Co | 8g | 1.86 | . |
4 | N | 4e | 15 | Co | 8g | 4.17 | . |
4 | N | 4e | 16 | Co | 8g | 1.86 | . |
4 | N | 4e | 17 | Co | 2b | 6.12 | . |
4 | N | 4e | 18 | Co | 2b | 1.89 | . |
4 | N | 4e | 19 | Fe | 2a | 3.24 | . |
4 | N | 4e | 20 | Fe | 2a | 5.52 | . |
5 | Co | 4e | 6 | Co | 4e | 7.32 | . |
5 | Co | 4e | 7 | Co | 4e | 7.87 | . |
5 | Co | 4e | 8 | Co | 4e | 2.64 | . |
5 | Co | 4e | 9 | Co | 8g | 2.67 | . |
5 | Co | 4e | 10 | Co | 8g | 5.90 | . |
5 | Co | 4e | 11 | Co | 8g | 2.67 | . |
5 | Co | 4e | 12 | Co | 8g | 5.90 | . |
5 | Co | 4e | 13 | Co | 8g | 5.81 | . |
5 | Co | 4e | 14 | Co | 8g | 2.60 | . |
5 | Co | 4e | 15 | Co | 8g | 5.81 | . |
5 | Co | 4e | 16 | Co | 8g | 2.60 | . |
5 | Co | 4e | 17 | Co | 2b | 3.75 | . |
5 | Co | 4e | 18 | Co | 2b | 4.51 | . |
5 | Co | 4e | 19 | Fe | 2a | 3.66 | . |
5 | Co | 4e | 20 | Fe | 2a | 4.59 | . |
6 | Co | 4e | 7 | Co | 4e | 2.64 | . |
6 | Co | 4e | 8 | Co | 4e | 7.87 | . |
6 | Co | 4e | 9 | Co | 8g | 5.90 | . |
6 | Co | 4e | 10 | Co | 8g | 2.67 | . |
6 | Co | 4e | 11 | Co | 8g | 5.90 | . |
6 | Co | 4e | 12 | Co | 8g | 2.67 | . |
6 | Co | 4e | 13 | Co | 8g | 2.60 | . |
6 | Co | 4e | 14 | Co | 8g | 5.81 | . |
6 | Co | 4e | 15 | Co | 8g | 2.60 | . |
6 | Co | 4e | 16 | Co | 8g | 5.81 | . |
6 | Co | 4e | 17 | Co | 2b | 3.75 | . |
6 | Co | 4e | 18 | Co | 2b | 4.51 | . |
6 | Co | 4e | 19 | Fe | 2a | 3.66 | . |
6 | Co | 4e | 20 | Fe | 2a | 4.59 | . |
7 | Co | 4e | 8 | Co | 4e | 7.32 | . |
7 | Co | 4e | 9 | Co | 8g | 5.81 | . |
7 | Co | 4e | 10 | Co | 8g | 2.60 | . |
7 | Co | 4e | 11 | Co | 8g | 5.81 | . |
7 | Co | 4e | 12 | Co | 8g | 2.60 | . |
7 | Co | 4e | 13 | Co | 8g | 2.67 | . |
7 | Co | 4e | 14 | Co | 8g | 5.90 | . |
7 | Co | 4e | 15 | Co | 8g | 2.67 | . |
7 | Co | 4e | 16 | Co | 8g | 5.90 | . |
7 | Co | 4e | 17 | Co | 2b | 4.51 | . |
7 | Co | 4e | 18 | Co | 2b | 3.75 | . |
7 | Co | 4e | 19 | Fe | 2a | 4.59 | . |
7 | Co | 4e | 20 | Fe | 2a | 3.66 | . |
8 | Co | 4e | 9 | Co | 8g | 2.60 | . |
8 | Co | 4e | 10 | Co | 8g | 5.81 | . |
8 | Co | 4e | 11 | Co | 8g | 2.60 | . |
8 | Co | 4e | 12 | Co | 8g | 5.81 | . |
8 | Co | 4e | 13 | Co | 8g | 5.90 | . |
8 | Co | 4e | 14 | Co | 8g | 2.67 | . |
8 | Co | 4e | 15 | Co | 8g | 5.90 | . |
8 | Co | 4e | 16 | Co | 8g | 2.67 | . |
8 | Co | 4e | 17 | Co | 2b | 4.51 | . |
8 | Co | 4e | 18 | Co | 2b | 3.75 | . |
8 | Co | 4e | 19 | Fe | 2a | 4.59 | . |
8 | Co | 4e | 20 | Fe | 2a | 3.66 | . |
9 | Co | 8g | 10 | Co | 8g | 3.69 | . |
9 | Co | 8g | 11 | Co | 8g | 2.63 | . |
9 | Co | 8g | 12 | Co | 8g | 4.53 | . |
9 | Co | 8g | 13 | Co | 8g | 7.87 | . |
9 | Co | 8g | 14 | Co | 8g | 4.57 | . |
9 | Co | 8g | 15 | Co | 8g | 7.42 | . |
9 | Co | 8g | 16 | Co | 8g | 3.73 | . |
9 | Co | 8g | 17 | Co | 2b | 2.62 | . |
9 | Co | 8g | 18 | Co | 2b | 5.88 | . |
9 | Co | 8g | 19 | Fe | 2a | 5.88 | . |
9 | Co | 8g | 20 | Fe | 2a | 2.62 | . |
10 | Co | 8g | 11 | Co | 8g | 4.53 | . |
10 | Co | 8g | 12 | Co | 8g | 2.63 | . |
10 | Co | 8g | 13 | Co | 8g | 4.57 | . |
10 | Co | 8g | 14 | Co | 8g | 7.87 | . |
10 | Co | 8g | 15 | Co | 8g | 3.73 | . |
10 | Co | 8g | 16 | Co | 8g | 7.42 | . |
10 | Co | 8g | 17 | Co | 2b | 2.62 | . |
10 | Co | 8g | 18 | Co | 2b | 5.88 | . |
10 | Co | 8g | 19 | Fe | 2a | 5.88 | . |
10 | Co | 8g | 20 | Fe | 2a | 2.62 | . |
11 | Co | 8g | 12 | Co | 8g | 3.69 | . |
11 | Co | 8g | 13 | Co | 8g | 7.42 | . |
11 | Co | 8g | 14 | Co | 8g | 3.73 | . |
11 | Co | 8g | 15 | Co | 8g | 7.87 | . |
11 | Co | 8g | 16 | Co | 8g | 4.57 | . |
11 | Co | 8g | 17 | Co | 2b | 2.62 | . |
11 | Co | 8g | 18 | Co | 2b | 5.88 | . |
11 | Co | 8g | 19 | Fe | 2a | 5.88 | . |
11 | Co | 8g | 20 | Fe | 2a | 2.62 | . |
12 | Co | 8g | 13 | Co | 8g | 3.73 | . |
12 | Co | 8g | 14 | Co | 8g | 7.42 | . |
12 | Co | 8g | 15 | Co | 8g | 4.57 | . |
12 | Co | 8g | 16 | Co | 8g | 7.87 | . |
12 | Co | 8g | 17 | Co | 2b | 2.62 | . |
12 | Co | 8g | 18 | Co | 2b | 5.88 | . |
12 | Co | 8g | 19 | Fe | 2a | 5.88 | . |
12 | Co | 8g | 20 | Fe | 2a | 2.62 | . |
13 | Co | 8g | 14 | Co | 8g | 3.69 | . |
13 | Co | 8g | 15 | Co | 8g | 2.63 | . |
13 | Co | 8g | 16 | Co | 8g | 4.53 | . |
13 | Co | 8g | 17 | Co | 2b | 5.88 | . |
13 | Co | 8g | 18 | Co | 2b | 2.62 | . |
13 | Co | 8g | 19 | Fe | 2a | 2.62 | . |
13 | Co | 8g | 20 | Fe | 2a | 5.88 | . |
14 | Co | 8g | 15 | Co | 8g | 4.53 | . |
14 | Co | 8g | 16 | Co | 8g | 2.63 | . |
14 | Co | 8g | 17 | Co | 2b | 5.88 | . |
14 | Co | 8g | 18 | Co | 2b | 2.62 | . |
14 | Co | 8g | 19 | Fe | 2a | 2.62 | . |
14 | Co | 8g | 20 | Fe | 2a | 5.88 | . |
15 | Co | 8g | 16 | Co | 8g | 3.69 | . |
15 | Co | 8g | 17 | Co | 2b | 5.88 | . |
15 | Co | 8g | 18 | Co | 2b | 2.62 | . |
15 | Co | 8g | 19 | Fe | 2a | 2.62 | . |
15 | Co | 8g | 20 | Fe | 2a | 5.88 | . |
16 | Co | 8g | 17 | Co | 2b | 5.88 | . |
16 | Co | 8g | 18 | Co | 2b | 2.62 | . |
16 | Co | 8g | 19 | Fe | 2a | 2.62 | . |
16 | Co | 8g | 20 | Fe | 2a | 5.88 | . |
17 | Co | 2b | 18 | Co | 2b | 7.87 | . |
17 | Co | 2b | 19 | Fe | 2a | 7.42 | . |
17 | Co | 2b | 20 | Fe | 2a | 2.63 | . |
18 | Co | 2b | 19 | Fe | 2a | 2.63 | . |
18 | Co | 2b | 20 | Fe | 2a | 7.42 | . |
19 | Fe | 2a | 20 | Fe | 2a | 7.87 | . |
DFT calculations |
|
LMTO-GF calculations |
|
References |
Phys. Rev. B 94, 224424 (2016). DOI: 10.1103/PhysRevB.94.224424 |