Mg6CuSnO8
High-Entropy Materials HEAMP-ID: mp-1032122 · Space group: P4/mmm (#123)
Basic Information
Formula
Mg6CuSnO8
MP-ID
mp-1032122
Elements
4
Sites
16
Density
4.4984
g/cm³
Volume
168.36
ų
Cell a
8.8941
Å
Cell b
4.3508
Å
Cell c
4.3508
Å
α Angle
90.00
°
β Angle
90.00
°
γ Angle
90.00
°
Space Group
P4/mmm
Point Group
4/mmm
Crystal System
Tetragonal
Bravais Lattice
tP
Stability
No
Packing Fraction
-
X-ray Diffraction
Diffraction Pattern
X-axis: 2θ (°); Y-axis: relative intensity; Cu Kα ; λ=1.5418 Å
Diffraction Peaks (Top 24)
| 2θ | d (Å) | I | hkl |
|---|---|---|---|
| 9.95 | 8.8941 | 97.5 | (1,0,0) |
| 19.97 | 4.4471 | 28.8 | (2,0,0) |
| 20.41 | 4.3508 | 7.2 | (0,1,0) |
| 22.75 | 3.9082 | 11.8 | (1,1,0) |
| 28.71 | 3.1099 | 6.3 | (2,1,0) |
| 29.02 | 3.0765 | 22.8 | (0,1,1) |
| 30.14 | 2.9647 | 17.5 | (3,0,0) |
| 30.75 | 2.9074 | 39.9 | (1,1,1) |
| 35.48 | 2.5300 | 63.3 | (2,1,1) |
| 36.68 | 2.4500 | 3.1 | (3,1,0) |
| 40.57 | 2.2235 | 51.6 | (4,0,0) |
| 41.51 | 2.1754 | 100.0 | (0,2,0) |
| 42.34 | 2.1348 | 15.9 | (3,1,1) |
| 42.79 | 2.1131 | 13.4 | (1,2,0) |
| 45.83 | 1.9799 | 2.1 | (4,1,0) |
| 46.47 | 1.9541 | 13.2 | (2,2,0) |
| 46.68 | 1.9457 | 1.9 | (0,2,1) |
| 47.86 | 1.9008 | 3.8 | (1,2,1) |
| 50.65 | 1.8021 | 9.9 | (4,1,1) |
| 51.25 | 1.7826 | 3.0 | (2,2,1) |
| 52.15 | 1.7539 | 14.7 | (3,2,0) |
| 55.84 | 1.6465 | 1.4 | (5,1,0) |
| 56.58 | 1.6267 | 2.1 | (3,2,1) |
| 59.44 | 1.5550 | 60.1 | (4,2,0) |
Energy Properties
Formation Energy/atom
-2.46587
eV/atom
Energy/atom
-6.05808
eV/atom
Energy above Hull
0.2183
eV/atom
Uncorrected Energy
-5.7146
eV/atom
Volume/atom
10.52
ų
c/a Ratio
0.4892
Electronic Properties
Metallic
Metal
Band Gap
0
eV
Direct Gap
No
CBM
N/A
eV
Magnetic Properties
Magnetic
Yes
Total Mag. Moment
0.1513
μB
Mag. Ordering
FM
Mag. Sites
1
Magnetization/Volume
0.000900
μB/ų
Elastic Properties
Elastic data not available
Feature Analysis
Composition Overview
Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
O · 0.500
Element Family
Metalloid-Nonmetal
Solute Fraction
0.500
Interstitial Fraction
0.000
High-Entropy Alloy Features
Composite Radar (normalized)
Element-Class Share
Mix Entropy ΔS/R
1.0610
HEA criterion (>1.0 = high entropy)
Mix Entropy ΔS
8.8208
J/mol·K
Ω Parameter
1.6866
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
44.699%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
1.0056
smaller = more stable mixing
VEC
3.688
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
-2.563
kJ/mol; negative = exothermic mixing
Entropy Norm
0.7653
SS Former
0
Phase Tendency
IM
Related Tasks
Citation & References
Materials Project Page
https://materialsproject.org/materials/mp-1032122
Reference Citation
The crystal structure and related material properties of Mg6CuSnO8 were obtained from the Materials Project database (MP-ID: mp-1032122, 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_Mg6CuSnO8
_symmetry_space_group_name_H-M 'P 1'
_cell_length_a 8.89410924
_cell_length_b 4.35075309
_cell_length_c 4.35075309
_cell_angle_alpha 90.00000000
_cell_angle_beta 90.00000000
_cell_angle_gamma 90.00000000
_symmetry_Int_Tables_number 1
_chemical_formula_structural Mg6CuSnO8
_chemical_formula_sum 'Mg6 Cu1 Sn1 O8'
_cell_volume 168.35706030
_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
Mg Mg0 1 0.50000000 0.00000000 0.00000000 1.0
Mg Mg1 1 0.50000000 0.50000000 0.50000000 1.0
Mg Mg2 1 0.26126372 -0.00000000 0.50000000 1.0
Mg Mg3 1 0.73873628 0.00000000 0.50000000 1.0
Mg Mg4 1 0.26126372 0.50000000 0.00000000 1.0
Mg Mg5 1 0.73873628 0.50000000 -0.00000000 1.0
Cu Cu6 1 -0.00000000 0.00000000 0.00000000 1.0
Sn Sn7 1 -0.00000000 0.50000000 0.50000000 1.0
O O8 1 0.26824780 -0.00000000 -0.00000000 1.0
O O9 1 0.73175220 0.00000000 0.00000000 1.0
O O10 1 0.26229680 0.50000000 0.50000000 1.0
O O11 1 0.73770320 0.50000000 0.50000000 1.0
O O12 1 -0.00000000 0.00000000 0.50000000 1.0
O O13 1 0.50000000 0.00000000 0.50000000 1.0
O O14 1 -0.00000000 0.50000000 0.00000000 1.0
O O15 1 0.50000000 0.50000000 0.00000000 1.0
