Tb(CoGe)6

高熵材料 HEA 传统材料 TRA

MP-ID: mp-1104200 · Space group: P6/mmm (#191)

Materials Project API

Basic Information

Formula

Tb(CoGe)6

MP-ID

mp-1104200

Elements

Sites

Density

8.8778

g/cm³

Volume

177.39

Å³

Cell a

5.0989

Cell b

5.0989

Cell c

7.8783

α Angle

90.00

β Angle

90.00

γ Angle

120.00

Space Group

P6/mmm

Point Group

6/mmm

Crystal System

Hexagonal

Bravais Lattice

Stability

Packing Fraction

0.7405

X-ray Diffraction

Diffraction Pattern

Target / Radiation

X-axis: 2θ (°); Y-axis: relative intensity; Cu Kα ; λ=1.5418 Å

Diffraction Peaks (Top 24)

2θ	d (Å)	I	hkl
11.23	7.8783	7.1	(0,0,0,1)
20.11	4.4158	1.1	(1,0,-1,0)
23.09	3.8520	9.3	(1,0,-1,1)
30.41	2.9395	5.1	(1,0,-1,2)
34.14	2.6261	10.5	(0,0,0,3)
35.20	2.5495	23.5	(1,-2,1,0)
35.20	2.5495	47.1	(2,-1,-1,0)
37.06	2.4256	2.8	(2,-1,-1,1)
39.94	2.2571	38.7	(1,0,-1,3)
40.87	2.2079	55.2	(2,0,-2,0)
42.22	2.1403	100.0	(2,-1,-1,2)
42.52	2.1260	1.8	(2,0,-2,1)
46.08	1.9696	23.9	(0,0,0,4)
47.19	1.9260	29.8	(2,-2,0,2)
47.19	1.9260	14.9	(2,0,-2,2)
49.85	1.8292	20.3	(2,-1,-1,3)
50.76	1.7988	10.3	(1,0,-1,4)
54.28	1.6900	16.6	(2,0,-2,3)
56.35	1.6328	1.2	(3,-1,-2,1)
59.29	1.5586	7.0	(2,-1,-1,4)
62.59	1.4840	2.1	(1,0,-1,5)
63.17	1.4719	8.6	(3,-3,0,0)
63.17	1.4719	4.3	(3,0,-3,0)
63.27	1.4698	6.9	(2,0,-2,4)

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Energy Properties

Formation Energy/atom

-0.33155

eV/atom

Energy/atom

-6.11436

eV/atom

Energy above Hull

0.0273

eV/atom

Uncorrected Energy

-6.1144

eV/atom

Volume/atom

13.65

Å³

c/a Ratio

1.5451

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Total Mag. Moment

0.0411

μB

Mag. Ordering

Mag. Sites

Magnetization/Volume

0.000230

μB/Å³

Elastic Properties

Elastic data not available

Feature Analysis

Element Composition (atomic fraction)

Composition Info

Major / Matrix Element

Co · 0.462

Element Family

3d-TM

Solute Fraction

0.538

Interstitial Fraction

0.000

Composite Radar (normalized)

Element-Class Share

Mix Entropy ΔS/R

0.9110

HEA criterion (>1.0 = high entropy)

Mix Entropy ΔS

7.5742

J/mol·K

Ω Parameter

3.8580

Ω > 1.1 favors solid solution

Atomic Size Mismatch δr

10.341%

δr < 6.6% favors single-phase solid solution

Electronegativity Diff Δχ

0.2337

smaller = more stable mixing

VEC

6.692

valence electron concentration, affects phase stability

Mix Enthalpy ΔH_mix

2.946

kJ/mol; negative = exothermic mixing

Entropy Norm

0.8292

SS Former

Phase Tendency

Related Tasks

Related computation task IDs (1)

aaaejasn

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-1104200

Reference Citation

The crystal structure and related material properties of Tb(CoGe)6 were obtained from the Materials Project database (MP-ID: mp-1104200, database version v2026.04.13).

Literature Citation

Horton, M.K., Huck, P., Yang, R.X. et al. Accelerated data-driven materials science with the Materials Project. Nat. Mater. 24, 1522–1532 (2025). https://doi.org/10.1038/s41563-025-02272-0

3D Crystal Structure Rendering

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Raw CIF Data

# generated using pymatgen
data_Tb(CoGe)6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.09890900
_cell_length_b   5.09890949
_cell_length_c   7.87833800
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   120.00000332
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Tb(CoGe)6
_chemical_formula_sum   'Tb1 Co6 Ge6'
_cell_volume   177.38618365
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Tb  Tb0  1  0.00000000  0.00000000  0.00000000  1.0
  Co  Co1  1  0.50000000  0.50000000  0.74908600  1.0
  Co  Co2  1  0.50000000  0.00000000  0.74908600  1.0
  Co  Co3  1  0.00000000  0.50000000  0.74908600  1.0
  Co  Co4  1  0.50000000  0.50000000  0.25091400  1.0
  Co  Co5  1  0.50000000  0.00000000  0.25091400  1.0
  Co  Co6  1  0.00000000  0.50000000  0.25091400  1.0
  Ge  Ge7  1  0.66666700  0.33333300  0.00000000  1.0
  Ge  Ge8  1  0.33333300  0.66666700  0.00000000  1.0
  Ge  Ge9  1  0.66666700  0.33333300  0.50000000  1.0
  Ge  Ge10  1  0.33333300  0.66666700  0.50000000  1.0
  Ge  Ge11  1  0.00000000  0.00000000  0.65511200  1.0
  Ge  Ge12  1  0.00000000  0.00000000  0.34488800  1.0

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