NovoMag Database

Material:

FeCo₂Ge

ID:

MMD-2752

Explore database:

Compounds with the same formula: FeCo₂Ge (1 entry found)

Compounds with the same elements: Fe-Co-Ge (5 entries found)

Space group:

Crystal system	cubic
Space group number	225
Hermann-Mauguin	Fm-3m
Hall	-F 4 2 3
Point group	m-3m

Structure data:

Normalized formula	FeCo₂Ge
The number of formula units per unit cell	4
The total number of atoms per unit cell	16
The number of inequivalent sites per unit cell	3
Structure search	MP

Lattice parameters:

a (Å)	5.7287
b (Å)	5.7287
c (Å)	5.7287
α (deg.)	90.000
β (deg.)	90.000
γ (deg.)	90.000
Volume (Å³)	188.006
Density (g/cm³)	8.703

Crystal structure visualization:

Thermodynamic properties:

	DFT calculations (details)
Formation energy (vs. elemental phases)	-156.3 meV/atom
Formation energy above hull	0 meV, (stable)

Phase diagram:

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

Related structures:

Compounds with the same formula: FeCo₂Ge	1 entry found
Compounds with the same elements: Fe-Co-Ge	5 entries found
Binary compounds in Fe-Co system	11 entries found
Binary compounds in Fe-Ge system	21 entries found
Binary compounds in Co-Ge system	27 entries found

Magnetic properties:

	DFT calculations (details)
Magnetic ordering	Ferromagnetic
Total magnetic moment	22.37 μ_B/cell
Averaged magnetic moment	1.40 μ_B/atom
Magnetic polarization, J_s = μ₀M_s	1.39 T (= 1106.1 emu/cm³)

	LMTO-GF calculations (details)
Curie temperature, T_C

	DFT calculations (details)
Magnetic anisotropy constant, K^d-a	-0.01 MJ/m³ (= -0.01 meV/cell)
Magnetic easy axis	<111>
Magnetic hardness parameter, κ	0.06

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	Fe	4b	0.000000	0.000000	0.500000	2.85	.	.
2	Fe	4b	0.500000	0.000000	0.000000	2.85	.	.
3	Fe	4b	0.000000	0.500000	0.000000	2.85	.	.
4	Fe	4b	0.500000	0.500000	0.500000	2.85	.	.
5	Co	8c	0.250000	0.250000	0.250000	1.39	.	.
6	Co	8c	0.750000	0.750000	0.750000	1.39	.	.
7	Co	8c	0.250000	0.250000	0.750000	1.39	.	.
8	Co	8c	0.750000	0.750000	0.250000	1.39	.	.
9	Co	8c	0.750000	0.250000	0.750000	1.39	.	.
10	Co	8c	0.250000	0.750000	0.250000	1.39	.	.
11	Co	8c	0.750000	0.250000	0.250000	1.39	.	.
12	Co	8c	0.250000	0.750000	0.750000	1.39	.	.
13	Ge	4a	0.000000	0.000000	0.000000	0.01	.	.
14	Ge	4a	0.500000	0.500000	0.000000	0.01	.	.
15	Ge	4a	0.500000	0.000000	0.500000	0.01	.	.
16	Ge	4a	0.000000	0.500000	0.500000	0.01	.	.

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	Fe	4b	2	Fe	4b	4.05	.
1	Fe	4b	3	Fe	4b	4.05	.
1	Fe	4b	4	Fe	4b	4.05	.
1	Fe	4b	5	Co	8c	2.48	.
1	Fe	4b	6	Co	8c	2.48	.
1	Fe	4b	7	Co	8c	2.48	.
1	Fe	4b	8	Co	8c	2.48	.
1	Fe	4b	9	Co	8c	2.48	.
1	Fe	4b	10	Co	8c	2.48	.
1	Fe	4b	11	Co	8c	2.48	.
1	Fe	4b	12	Co	8c	2.48	.
1	Fe	4b	13	Ge	4a	2.86	.
1	Fe	4b	14	Ge	4a	4.96	.
1	Fe	4b	15	Ge	4a	2.86	.
1	Fe	4b	16	Ge	4a	2.86	.
2	Fe	4b	3	Fe	4b	4.05	.
2	Fe	4b	4	Fe	4b	4.05	.
2	Fe	4b	5	Co	8c	2.48	.
2	Fe	4b	6	Co	8c	2.48	.
2	Fe	4b	7	Co	8c	2.48	.
2	Fe	4b	8	Co	8c	2.48	.
2	Fe	4b	9	Co	8c	2.48	.
2	Fe	4b	10	Co	8c	2.48	.
2	Fe	4b	11	Co	8c	2.48	.
2	Fe	4b	12	Co	8c	2.48	.
2	Fe	4b	13	Ge	4a	2.86	.
2	Fe	4b	14	Ge	4a	2.86	.
2	Fe	4b	15	Ge	4a	2.86	.
2	Fe	4b	16	Ge	4a	4.96	.
3	Fe	4b	4	Fe	4b	4.05	.
3	Fe	4b	5	Co	8c	2.48	.
3	Fe	4b	6	Co	8c	2.48	.
3	Fe	4b	7	Co	8c	2.48	.
3	Fe	4b	8	Co	8c	2.48	.
3	Fe	4b	9	Co	8c	2.48	.
3	Fe	4b	10	Co	8c	2.48	.
3	Fe	4b	11	Co	8c	2.48	.
3	Fe	4b	12	Co	8c	2.48	.
3	Fe	4b	13	Ge	4a	2.86	.
3	Fe	4b	14	Ge	4a	2.86	.
3	Fe	4b	15	Ge	4a	4.96	.
3	Fe	4b	16	Ge	4a	2.86	.
4	Fe	4b	5	Co	8c	2.48	.
4	Fe	4b	6	Co	8c	2.48	.
4	Fe	4b	7	Co	8c	2.48	.
4	Fe	4b	8	Co	8c	2.48	.
4	Fe	4b	9	Co	8c	2.48	.
4	Fe	4b	10	Co	8c	2.48	.
4	Fe	4b	11	Co	8c	2.48	.
4	Fe	4b	12	Co	8c	2.48	.
4	Fe	4b	13	Ge	4a	4.96	.
4	Fe	4b	14	Ge	4a	2.86	.
4	Fe	4b	15	Ge	4a	2.86	.
4	Fe	4b	16	Ge	4a	2.86	.
5	Co	8c	6	Co	8c	4.96	.
5	Co	8c	7	Co	8c	2.86	.
5	Co	8c	8	Co	8c	4.05	.
5	Co	8c	9	Co	8c	4.05	.
5	Co	8c	10	Co	8c	2.86	.
5	Co	8c	11	Co	8c	2.86	.
5	Co	8c	12	Co	8c	4.05	.
5	Co	8c	13	Ge	4a	2.48	.
5	Co	8c	14	Ge	4a	2.48	.
5	Co	8c	15	Ge	4a	2.48	.
5	Co	8c	16	Ge	4a	2.48	.
6	Co	8c	7	Co	8c	4.05	.
6	Co	8c	8	Co	8c	2.86	.
6	Co	8c	9	Co	8c	2.86	.
6	Co	8c	10	Co	8c	4.05	.
6	Co	8c	11	Co	8c	4.05	.
6	Co	8c	12	Co	8c	2.86	.
6	Co	8c	13	Ge	4a	2.48	.
6	Co	8c	14	Ge	4a	2.48	.
6	Co	8c	15	Ge	4a	2.48	.
6	Co	8c	16	Ge	4a	2.48	.
7	Co	8c	8	Co	8c	4.96	.
7	Co	8c	9	Co	8c	2.86	.
7	Co	8c	10	Co	8c	4.05	.
7	Co	8c	11	Co	8c	4.05	.
7	Co	8c	12	Co	8c	2.86	.
7	Co	8c	13	Ge	4a	2.48	.
7	Co	8c	14	Ge	4a	2.48	.
7	Co	8c	15	Ge	4a	2.48	.
7	Co	8c	16	Ge	4a	2.48	.
8	Co	8c	9	Co	8c	4.05	.
8	Co	8c	10	Co	8c	2.86	.
8	Co	8c	11	Co	8c	2.86	.
8	Co	8c	12	Co	8c	4.05	.
8	Co	8c	13	Ge	4a	2.48	.
8	Co	8c	14	Ge	4a	2.48	.
8	Co	8c	15	Ge	4a	2.48	.
8	Co	8c	16	Ge	4a	2.48	.
9	Co	8c	10	Co	8c	4.96	.
9	Co	8c	11	Co	8c	2.86	.
9	Co	8c	12	Co	8c	4.05	.
9	Co	8c	13	Ge	4a	2.48	.
9	Co	8c	14	Ge	4a	2.48	.
9	Co	8c	15	Ge	4a	2.48	.
9	Co	8c	16	Ge	4a	2.48	.
10	Co	8c	11	Co	8c	4.05	.
10	Co	8c	12	Co	8c	2.86	.
10	Co	8c	13	Ge	4a	2.48	.
10	Co	8c	14	Ge	4a	2.48	.
10	Co	8c	15	Ge	4a	2.48	.
10	Co	8c	16	Ge	4a	2.48	.
11	Co	8c	12	Co	8c	4.96	.
11	Co	8c	13	Ge	4a	2.48	.
11	Co	8c	14	Ge	4a	2.48	.
11	Co	8c	15	Ge	4a	2.48	.
11	Co	8c	16	Ge	4a	2.48	.
12	Co	8c	13	Ge	4a	2.48	.
12	Co	8c	14	Ge	4a	2.48	.
12	Co	8c	15	Ge	4a	2.48	.
12	Co	8c	16	Ge	4a	2.48	.
13	Ge	4a	14	Ge	4a	4.05	.
13	Ge	4a	15	Ge	4a	4.05	.
13	Ge	4a	16	Ge	4a	4.05	.
14	Ge	4a	15	Ge	4a	4.05	.
14	Ge	4a	16	Ge	4a	4.05	.
15	Ge	4a	16	Ge	4a	4.05	.

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) = (10, 10, 10) for magnetic anisotropy calculations
package: QE (v6.3)

Material:

FeCo2Ge

ID:

MMD-2752

Explore database:

Compounds with the same formula: FeCo2Ge (1 entry found)

Compounds with the same elements: Fe-Co-Ge (5 entries found)

Space group:

Crystal system

cubic

Space group number

225

Hermann-Mauguin

Fm-3m

Hall

-F 4 2 3

Point group

m-3m

Structure data:

Normalized formula

FeCo2Ge

The number of formula units per unit cell

4

The total number of atoms per unit cell

16

The number of inequivalent sites per unit cell

3

Structure search

MP

Lattice parameters:

a (Å)

5.7287

b (Å)

5.7287

c (Å)

5.7287

α (deg.)

90.000

β (deg.)

90.000

γ (deg.)

90.000

Volume (Å3)

188.006

Density (g/cm3)

8.703

Crystal structure visualization:

Thermodynamic properties:

Formation energy (vs. elemental phases)

-156.3 meV/atom

Formation energy above hull

0 meV, (stable)

Phase diagram:

Related structures:

Compounds with the same formula: FeCo2Ge

1 entry found

Compounds with the same elements: Fe-Co-Ge

5 entries found

Binary compounds in Fe-Co system

11 entries found

Binary compounds in Fe-Ge system

21 entries found

Binary compounds in Co-Ge system

27 entries found

Magnetic properties:

Magnetic ordering

Ferromagnetic

Total magnetic moment

22.37 μB/cell

Averaged magnetic moment

1.40 μB/atom

Magnetic polarization, Js = μ0Ms

1.39 T (= 1106.1 emu/cm3)

Curie temperature, TC

Magnetic anisotropy constant, Kd-a

-0.01 MJ/m3 (= -0.01 meV/cell)

Magnetic easy axis

<111>

Magnetic hardness parameter, κ

0.06

FeCo₂Ge

Compounds with the same formula: FeCo₂Ge (1 entry found)

FeCo₂Ge

Volume (Å³)

Density (g/cm³)

Compounds with the same formula: FeCo₂Ge

22.37 μ_B/cell

1.40 μ_B/atom

Magnetic polarization, J_s = μ₀M_s

1.39 T (= 1106.1 emu/cm³)

Curie temperature, T_C

Magnetic anisotropy constant, K^d-a

-0.01 MJ/m³ (= -0.01 meV/cell)