material

MgAl
ID:

mp-1039019
Tags: intermetallic

Material Details

Final Magnetic Moment
0.000 μB

Calculated total magnetic moment for the unit cell within the magnetic ordering provided (see below). Typically accurate to the second digit.
Magnetic Ordering
NM
Formation Energy / Atom
0.039 eV

Calculated formation energy from the elements normalized to per atom in the unit cell.

Energy Above Hull / Atom
0.064 eV

The energy of decomposition of this material into the set of most stable materials at this chemical composition, in eV/atom. Stability is tested against all potential chemical combinations that result in the material's composition. For example, a Co2O3 structure would be tested for decomposition against other Co2O3 structures, against Co and O2 mixtures, and against CoO and O2 mixtures.

Density
2.19 g/cm3

The calculated bulk crystalline density, typically underestimated due calculated cell volumes overestimated on average by 3% (+/- 6%)

Decomposes To
MgAl2 + Mg17Al12
Band Gap
0.000 eV

In general, band gaps computed with common exchange-correlation functionals such as the LDA and GGA are severely underestimated. Typically the disagreement is reported to be ~50% in the literature. Some internal testing by the Materials Project supports these statements; typically, we find that band gaps are underestimated by ~40%. We additionally find that several known insulators are predicted to be metallic.

Space Group

Hermann Mauguin
P6m2 [187]
Hall
P 6 2
Point Group
6m2
Crystal System
hexagonal
We have not yet calculated a detailed bandstructure for this material

X-Ray Diffraction

    Select radiation source:
  • Cu
  • Ag
  • Mo
  • Fe

Calculated powder diffraction pattern; note that peak spacings may be affected due to inaccuracies in calculated cell volume, which is typically overestimated on average by 3% (+/- 6%)

Substrates

Reference for minimal coincident interface area (MCIA) and elastic energy:
substrate orientation:
No elastic tensor calculated for this material, so elastic energies not avaialable. Sorting by MCIA instead.
substrate material substrate orientation film orientation MCIA† [Å2]
C (mp-48) <0 0 1> <0 0 1> 71.3
C (mp-48) <1 0 0> <1 1 0> 77.3
C (mp-48) <1 0 1> <1 1 0> 77.3
C (mp-48) <1 1 0> <0 0 1> 166.3
C (mp-48) <1 1 1> <1 0 0> 104.2
LaAlO3 (mp-2920) <0 0 1> <0 0 1> 102.9
LaAlO3 (mp-2920) <1 0 0> <0 0 1> 205.8
LaAlO3 (mp-2920) <1 0 1> <0 0 1> 221.7
AlN (mp-661) <0 0 1> <0 0 1> 102.9
AlN (mp-661) <1 0 0> <1 1 0> 77.3
AlN (mp-661) <1 0 1> <0 0 1> 126.7
AlN (mp-661) <1 1 0> <1 0 0> 104.2
AlN (mp-661) <1 1 1> <1 0 1> 118.0
CeO2 (mp-20194) <1 0 0> <1 0 1> 185.4
CeO2 (mp-20194) <1 1 0> <0 0 1> 213.8
CeO2 (mp-20194) <1 1 1> <0 0 1> 150.4
GaAs (mp-2534) <1 0 0> <1 1 1> 134.8
GaAs (mp-2534) <1 1 0> <1 0 1> 236.0
GaAs (mp-2534) <1 1 1> <0 0 1> 55.4
BaF2 (mp-1029) <1 0 0> <0 0 1> 348.4
BaF2 (mp-1029) <1 1 0> <1 0 1> 168.6
BaF2 (mp-1029) <1 1 1> <0 0 1> 71.3
SiO2 (mp-6930) <0 0 1> <1 1 0> 128.9
SiO2 (mp-6930) <1 0 0> <1 0 0> 133.9
SiO2 (mp-6930) <1 0 1> <1 1 1> 242.7
SiO2 (mp-6930) <1 1 0> <1 1 0> 283.5
SiO2 (mp-6930) <1 1 1> <1 0 1> 269.7
KCl (mp-23193) <1 0 0> <0 0 1> 340.4
KCl (mp-23193) <1 1 0> <1 1 0> 232.0
KCl (mp-23193) <1 1 1> <0 0 1> 71.3
DyScO3 (mp-31120) <0 0 1> <1 0 1> 252.9
DyScO3 (mp-31120) <0 1 0> <0 0 1> 221.7
DyScO3 (mp-31120) <0 1 1> <1 0 1> 219.1
DyScO3 (mp-31120) <1 0 0> <1 1 1> 134.8
DyScO3 (mp-31120) <1 0 1> <1 0 0> 163.7
DyScO3 (mp-31120) <1 1 0> <1 0 1> 185.4
DyScO3 (mp-31120) <1 1 1> <1 1 0> 206.2
InAs (mp-20305) <1 0 0> <0 0 1> 190.0
InAs (mp-20305) <1 1 0> <0 0 1> 158.3
InAs (mp-20305) <1 1 1> <0 0 1> 197.9
ZnSe (mp-1190) <1 0 0> <1 1 1> 134.8
ZnSe (mp-1190) <1 1 0> <1 0 1> 236.0
ZnSe (mp-1190) <1 1 1> <0 0 1> 55.4
KTaO3 (mp-3614) <1 0 0> <1 1 1> 134.8
KTaO3 (mp-3614) <1 1 0> <1 0 1> 118.0
KTaO3 (mp-3614) <1 1 1> <0 0 1> 197.9
InP (mp-20351) <1 0 0> <1 0 0> 178.6
InP (mp-20351) <1 1 0> <1 0 0> 148.8
InP (mp-20351) <1 1 1> <0 0 1> 245.4
Te2W (mp-22693) <0 0 1> <1 0 1> 151.7
Up to 50 entries displayed.
†minimal coincident interface area.

Elasticity

Reference for tensor and properties:
Visualize with ELATE
Stiffness Tensor Cij (GPa)
83 25 34 0 0 0
25 83 34 0 0 0
34 34 103 0 0 0
0 0 0 22 0 0
0 0 0 0 22 0
0 0 0 0 0 29
Compliance Tensor Sij (10-12Pa-1)
14.5 -2.8 -3.8 0 0 0
-2.8 14.5 -3.8 0 0 0
-3.8 -3.8 12.1 0 0 0
0 0 0 46.2 0 0
0 0 0 0 46.2 0
0 0 0 0 0 34.5
Shear Modulus GV
26 GPa
Bulk Modulus KV
50 GPa
Shear Modulus GR
26 GPa
Bulk Modulus KR
49 GPa
Shear Modulus GVRH
26 GPa
Bulk Modulus KVRH
50 GPa
Elastic Anisotropy
0.15
Poisson's Ratio
0.28

Similar Structures beta feature

Explanation of dissimilarity measure: Documentation.
material dissimilarity Ehull # of elements
Cr8Ni50Mo15W2 (mp-767372) 0.2684 0.028 4
CrFeCoNi (mp-1012640) 0.2185 0.065 4
CrFeCoNi (mp-1096923) 0.4134 0.193 4
Pm3I (mp-976867) 0.0047 0.351 2
LiRh (mp-600561) 0.0019 0.000 2
Mg5Sb (mp-1094564) 0.0019 0.116 2
Re3W (mp-974408) 0.0059 0.130 2
Li2Mg (mp-1094576) 0.0052 0.014 2
In (mp-973111) 0.0019 0.048 1
He (mp-23156) 0.0006 0.002 1
N2 (mp-12103) 0.0007 0.000 1
Ag (mp-10597) 0.0037 0.008 1
H2 (mp-23907) 0.0020 0.000 1
Up to 5 similar elemental, binary, ternary, quaternary, etc. structures displayed (dissimilarity threshold 0.75). Ehull: energy above hull per atom [eV].

Synthesis Descriptions

10.1016/j.apcata.2006.07.022
The parent MgAl-LDH, referred in this study as MgAl-NO3, was prepared under N2 atmosphere, by pH controlled co-precipitation of magnesium and aluminium nitrates. An aqueous solution of 1.2moll1 Mg( [...]
10.1007/s10853-008-2952-z
The adsorbent MgAlCO3LDH was prepared according to the coprecipitation method proposed by Reichle [15]; all reactants were acquired from Merck (>99% assay). The prepared LDH and the adsorbed solids [...]
chef hat mixing beaker

Explore more synthesis descriptions for materials of composition MgAl.

Text computed by synthesisproject.org.

Calculation Summary

Elasticity

Methodology

Structure Optimization

Run Type
GGA
Energy Cutoff
520 eV
# of K-points
None
U Values
--
Pseudopotentials
VASP PAW: Mg_pv Al
Final Energy/Atom
-2.6344 eV
Corrected Energy
-5.2688 eV
-5.2688 eV = -5.2688 eV (uncorrected energy)

Detailed input parameters and outputs for all calculations

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User remarks:
  • intermetallic

Displaying lattice parameters for primitive cell; note that calculated cell volumes are typically overestimated on average by 3% (+/- 6%). Note the primitive cell may appear less symmetric than the conventional cell representation (see "Structure Type" selector below the 3d structure)