material

YbI2
ID:

mp-570418
DOI:

10.17188/1275678

Warnings: [?]
  1. Large change in a lattice parameter during relaxation.
Tags: Ytterbium(II) iodide High pressure experimental phase

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
Non-magnetic
Formation Energy / Atom
-1.669 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
5.26 g/cm3

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

Decomposes To
Stable
Band Gap
4.007 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
P3m1 [164]
Hall
-P 3 2"
Point Group
3m
Crystal System
trigonal

Band Structure

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

sign indicates spin ↑ ↓

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%)

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 1 1> <0 0 1> 0.000 52.5
TeO2 (mp-2125) <1 0 1> <1 0 0> 0.001 311.4
Cu (mp-30) <1 1 0> <1 0 0> 0.002 276.8
LaAlO3 (mp-2920) <0 0 1> <0 0 1> 0.002 227.5
Te2Mo (mp-602) <1 0 1> <1 0 0> 0.002 276.8
CdTe (mp-406) <1 1 1> <0 0 1> 0.003 227.5
CaF2 (mp-2741) <1 1 1> <0 0 1> 0.003 52.5
LaAlO3 (mp-2920) <1 0 1> <0 0 1> 0.003 227.5
ZnSe (mp-1190) <1 1 1> <0 0 1> 0.003 227.5
GaP (mp-2490) <1 0 0> <1 1 0> 0.004 59.9
InSb (mp-20012) <1 1 1> <0 0 1> 0.005 227.5
NdGaO3 (mp-3196) <1 0 0> <1 0 0> 0.005 173.0
BN (mp-984) <1 1 1> <1 1 0> 0.006 239.7
CaF2 (mp-2741) <1 0 0> <1 1 0> 0.006 59.9
Te2Mo (mp-602) <0 0 1> <1 0 0> 0.007 207.6
ZnO (mp-2133) <0 0 1> <0 0 1> 0.007 122.5
BaF2 (mp-1029) <1 1 0> <1 0 0> 0.007 276.8
Ag (mp-124) <1 1 0> <1 0 0> 0.008 242.2
KTaO3 (mp-3614) <1 0 0> <1 0 0> 0.008 242.2
BaTiO3 (mp-5986) <1 0 1> <1 1 1> 0.008 187.3
C (mp-48) <1 1 1> <1 0 1> 0.008 271.4
Al2O3 (mp-1143) <1 0 0> <1 0 0> 0.008 311.4
Au (mp-81) <1 1 0> <1 0 0> 0.008 242.2
GaAs (mp-2534) <1 1 1> <0 0 1> 0.009 227.5
MgF2 (mp-1249) <1 1 1> <1 0 0> 0.010 207.6
LiTaO3 (mp-3666) <0 0 1> <1 0 0> 0.010 69.2
PbSe (mp-2201) <1 1 0> <1 0 0> 0.011 276.8
TiO2 (mp-390) <1 0 1> <1 0 0> 0.011 242.2
MgO (mp-1265) <1 1 0> <1 1 1> 0.011 312.2
LiGaO2 (mp-5854) <1 0 1> <1 1 0> 0.011 179.8
Al (mp-134) <1 0 0> <1 0 0> 0.012 242.2
GaN (mp-804) <1 1 1> <1 0 0> 0.014 311.4
GaN (mp-804) <0 0 1> <1 0 1> 0.015 193.9
CaCO3 (mp-3953) <1 1 1> <1 0 1> 0.015 155.1
GaSb (mp-1156) <1 1 0> <1 0 0> 0.016 276.8
MgF2 (mp-1249) <1 1 0> <1 0 0> 0.016 242.2
Si (mp-149) <1 0 0> <1 1 0> 0.016 59.9
CeO2 (mp-20194) <1 0 0> <1 1 0> 0.017 59.9
Ge (mp-32) <1 0 0> <1 1 0> 0.018 299.7
NdGaO3 (mp-3196) <0 1 0> <1 1 1> 0.018 124.9
ZnO (mp-2133) <1 1 0> <1 0 0> 0.018 207.6
YAlO3 (mp-3792) <0 0 1> <1 1 1> 0.019 249.8
SiC (mp-7631) <1 0 0> <1 1 0> 0.020 239.7
WS2 (mp-224) <0 0 1> <1 0 1> 0.020 193.9
MoS2 (mp-1434) <0 0 1> <1 0 1> 0.020 193.9
CdSe (mp-2691) <1 1 0> <1 0 0> 0.021 276.8
KCl (mp-23193) <1 1 1> <1 0 0> 0.022 69.2
KCl (mp-23193) <1 0 0> <1 0 0> 0.022 207.6
C (mp-48) <1 1 0> <1 1 0> 0.023 239.7
NdGaO3 (mp-3196) <1 1 0> <1 1 0> 0.023 59.9
Up to 50 entries displayed.
†minimal coincident interface area.

Elasticity

Reference for tensor and properties:
Visualize with ELATE
Stiffness Tensor Cij (GPa)
25 5 0 -1 0 -0
5 25 0 1 -0 -0
0 0 2 -0 0 -0
-1 1 -0 0 -0 -0
0 -0 0 -0 0 -1
-0 -0 -0 -0 -1 10
Compliance Tensor Sij (10-12Pa-1)
46 -11.6 -6 115.1 0 0
-11.6 46 -6 -115.1 0 0
-6 -6 510 0 0 0
115.1 -115.1 0 3517.5 0 0
0 0 0 0 3517.5 230.1
0 0 0 0 230.1 115.2
Shear Modulus GV
5 GPa
Bulk Modulus KV
7 GPa
Shear Modulus GR
1 GPa
Bulk Modulus KR
2 GPa
Shear Modulus GVRH
3 GPa
Bulk Modulus KVRH
4 GPa
Elastic Anisotropy
39.21
Poisson's Ratio
0.23

Similar Structures beta feature

Explanation of dissimilarity measure: Documentation.
material dissimilarity Ehull # of elements
LiCaNiF6 (mp-559584) 0.6674 0.000 4
LiSmAlF6 (mp-8315) 0.5748 0.248 4
NaLa6OsI12 (mp-569905) 0.5411 0.000 4
LiCaCoF6 (mp-555529) 0.6696 0.041 4
SrLa6OsI12 (mp-567419) 0.6340 0.000 4
MnI2 (mp-28013) 0.0456 0.000 2
CdI2 (mp-568233) 0.0325 0.002 2
CdI2 (mp-567296) 0.0496 0.001 2
CdI2 (mp-573608) 0.0461 0.008 2
CoI2 (mp-569610) 0.0331 0.025 2
TiNbS4 (mp-34289) 0.1872 0.020 3
Li2UI6 (mp-570813) 0.2069 0.000 3
Li2UBr6 (mp-675438) 0.0888 0.000 3
Li2UBr6 (mp-531472) 0.1290 0.001 3
HfTeSe4 (mp-989651) 0.1728 0.012 3
Up to 5 similar elemental, binary, ternary, quaternary, etc. structures displayed (dissimilarity threshold 0.75). Ehull: energy above hull per atom [eV].

Calculation Summary

Elasticity

Methodology

Structure Optimization

Run Type
GGA
Energy Cutoff
520 eV
# of K-points
None
U Values
--
Pseudopotentials
VASP PAW: Yb_2 I
Final Energy/Atom
-3.1916 eV
Corrected Energy
-9.5747 eV
-9.5747 eV = -9.5747 eV (uncorrected energy)

Detailed input parameters and outputs for all calculations

Show JSON History Show BibTex Citation Download BibTex Citation
ICSD IDs
  • 77907
Submitted by
User remarks:
  • Ytterbium(II) iodide
  • High pressure experimental phase

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)