material

Sm2O3

ID:

mp-218

DOI:

10.17188/1197171


Tags: Samarium oxide - type C Samarium oxide - C Samarium oxide

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
Unknown
Formation Energy / Atom
-3.879 eV

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

Energy Above Hull / Atom
0.000 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
6.96 g/cm3

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

Decomposes To
Stable
Band Gap
3.782 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
Ia3 [206]
Hall
-I 2b 2c 3
Point Group
m3
Crystal System
cubic

Band Structure

Density of States
Warning! Semi-local DFT tends to severely underestimate bandgaps. Please see the wiki for more info.

sign indicates spin ↑ ↓

  • 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%)

X-Ray Absorption Spectra

FEFF XANES

Select an element to display a spectrum averaged over all sites of that element in the structure.

Apply Gaussian smoothing:

0 eV
3 eV
FWHM: 0 eV

Download spectra for every symmetrically equivalent absorption site in the structure.

Download FEFF Input parameters.

Warning: These results are intended to be semi-quantitative in that corrections, such as edge shifts and Debye-Waller damping, have not been included.

Substrates

Reference for minimal coincident interface area (MCIA) and elastic energy:
substrate orientation:
substrate material substrate orientation film orientation elastic energy [meV] MCIA [Å2]
GaP (mp-2490) <1 0 0> <1 0 0> 0.004 121.0
GaP (mp-2490) <1 1 0> <1 1 0> 0.004 171.1
Mg (mp-153) <1 1 1> <1 0 0> 0.006 121.0
NdGaO3 (mp-3196) <0 1 0> <1 1 0> 0.020 171.1
CaF2 (mp-2741) <1 0 0> <1 0 0> 0.026 121.0
CaF2 (mp-2741) <1 1 0> <1 1 0> 0.027 171.1
Si (mp-149) <1 0 0> <1 0 0> 0.095 121.0
Si (mp-149) <1 1 0> <1 1 0> 0.098 171.1
NdGaO3 (mp-3196) <1 1 0> <1 0 0> 0.102 121.0
CeO2 (mp-20194) <1 0 0> <1 0 0> 0.103 121.0
CeO2 (mp-20194) <1 1 0> <1 1 0> 0.106 171.1
GaN (mp-804) <1 1 1> <1 0 0> 0.132 121.0
KCl (mp-23193) <1 1 0> <1 1 0> 0.155 171.1
Mg (mp-153) <1 1 0> <1 1 0> 0.209 171.1
LiAlO2 (mp-3427) <0 0 1> <1 0 0> 0.228 242.0
ZrO2 (mp-2858) <1 0 0> <1 1 0> 0.248 171.1
YAlO3 (mp-3792) <0 0 1> <1 1 0> 0.306 171.1
CsI (mp-614603) <1 0 0> <1 0 0> 0.333 121.0
CsI (mp-614603) <1 1 0> <1 1 0> 0.343 171.1
BaF2 (mp-1029) <1 1 0> <1 1 0> 0.347 171.1
NdGaO3 (mp-3196) <0 0 1> <1 0 0> 0.361 121.0
DyScO3 (mp-31120) <0 1 0> <1 1 0> 0.640 171.1
SrTiO3 (mp-4651) <1 1 0> <1 0 0> 0.648 121.0
SiC (mp-7631) <1 0 0> <1 0 0> 0.733 242.0
DyScO3 (mp-31120) <1 1 0> <1 0 0> 1.638 121.0
KP(HO2)2 (mp-23959) <0 1 0> <1 0 0> 2.119 242.0
Up to 50 entries displayed.
minimal coincident interface area.

Elasticity

Reference for tensor and properties:
Stiffness Tensor Cij (GPa)
190 100 100 0 0 0
100 190 100 0 0 0
100 100 190 0 0 0
0 0 0 62 0 0
0 0 0 0 62 0
0 0 0 0 0 62
Compliance Tensor Sij (10-12Pa-1)
8.2 -2.8 -2.8 0 0 0
-2.8 8.2 -2.8 0 0 0
-2.8 -2.8 8.2 0 0 0
0 0 0 16.1 0 0
0 0 0 0 16.1 0
0 0 0 0 0 16.1
Shear Modulus GV
55 GPa
Bulk Modulus KV
130 GPa
Shear Modulus GR
54 GPa
Bulk Modulus KR
130 GPa
Shear Modulus GVRH
55 GPa
Bulk Modulus KVRH
130 GPa
Elastic Anisotropy
0.12
Poisson's Ratio
0.32

Calculation Summary

Elasticity

Methodology

Structure Optimization

Run Type
GGA
Energy Cutoff
520 eV
# of K-points
7
U Values
--
Pseudopotentials
VASP PAW: O Sm_3
Final Energy/Atom
-8.3059 eV
Corrected Energy
-349.0903 eV
-349.0903 eV = -332.2354 eV (uncorrected energy) - 16.8550 eV (MP Anion Correction)

Detailed input parameters and outputs for all calculations


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ICSD IDs
  • 647461
  • 96206
  • 165779
  • 41271
  • 40475
  • 27741

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)