material

GeO2
ID:

mp-470
DOI:

10.17188/1208347

Tags: Germanium dioxide High pressure experimental phase Argutite Germanium oxide Germanium oxide (1/2)

Material Details

Final Magnetic Moment
0.001 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
-2.085 eV

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

Energy Above Hull / Atom
0.004 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
5.94 g/cm3

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

Decomposes To
GeO2
Band Gap
1.907 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
P42/mnm [136]
Hall
-P 4n 2n
Point Group
4/mmm
Crystal System
tetragonal

Electronic Structure

Topological data for ICSD ID 16637 from Topological Materials Database
Topological Classification
trivial*
Subclassification
LCEBR†
* trivial insulator or metal
† Linear Combination of Elementary Band Representations

Band Structure and Density of States

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

Vibrational Properties

Reference for phonon calculations and visualization: Visualize with phononwebsite

Phonon dispersion

Density of States
Warning! These calculations were performed using a PBEsol exchange correlation functional in the framework of DFPT using the Abinit code. Please see the wiki for more info.

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:
No elastic tensor calculated for this material, so elastic energies not avaialable. Sorting by MCIA instead.
substrate material substrate orientation film orientation MCIA† [Å2]
KP(HO2)2 (mp-23959) <0 0 1> <1 0 0> 143.4
PbS (mp-21276) <1 0 0> <0 0 1> 181.0
SiC (mp-11714) <1 1 0> <1 0 1> 215.7
NaCl (mp-22862) <1 0 0> <0 0 1> 160.9
CaF2 (mp-2741) <1 1 0> <1 0 1> 215.7
Ni (mp-23) <1 1 1> <1 1 1> 191.0
TeO2 (mp-2125) <0 1 1> <0 0 1> 301.6
YVO4 (mp-19133) <1 0 0> <1 1 0> 92.2
YAlO3 (mp-3792) <1 0 0> <1 0 1> 119.8
TiO2 (mp-390) <1 1 1> <1 0 1> 215.7
WSe2 (mp-1821) <1 0 1> <1 1 0> 202.9
KTaO3 (mp-3614) <1 0 0> <0 0 1> 80.4
GaP (mp-2490) <1 1 0> <1 0 1> 215.7
YVO4 (mp-19133) <1 1 0> <1 1 0> 129.1
Mg (mp-153) <0 0 1> <0 0 1> 140.8
MoS2 (mp-1434) <0 0 1> <0 0 1> 140.8
WS2 (mp-224) <0 0 1> <0 0 1> 140.8
Mg (mp-153) <1 0 0> <0 0 1> 100.5
C (mp-48) <1 1 1> <1 1 1> 136.4
GdScO3 (mp-5690) <1 0 0> <1 0 0> 234.7
WSe2 (mp-1821) <1 0 0> <1 0 0> 299.9
MgO (mp-1265) <1 0 0> <0 0 1> 160.9
Ge (mp-32) <1 1 0> <1 0 0> 234.7
LiAlO2 (mp-3427) <1 1 1> <1 0 0> 273.8
KP(HO2)2 (mp-23959) <0 1 0> <0 0 1> 301.6
C (mp-48) <1 0 1> <1 0 0> 221.7
TeO2 (mp-2125) <1 1 0> <1 0 0> 195.6
Al (mp-134) <1 0 0> <0 0 1> 80.4
TiO2 (mp-390) <1 1 0> <1 0 1> 263.6
MoS2 (mp-1434) <1 0 0> <1 1 1> 136.4
LaF3 (mp-905) <0 0 1> <0 0 1> 321.7
Ni (mp-23) <1 1 0> <1 1 1> 191.0
Bi2Te3 (mp-34202) <1 0 0> <0 0 1> 140.8
CdS (mp-672) <1 1 1> <1 1 0> 258.2
LaF3 (mp-905) <1 0 0> <1 0 0> 326.0
CdWO4 (mp-19387) <1 1 0> <1 1 0> 166.0
GaAs (mp-2534) <1 1 0> <1 0 0> 234.7
ZrO2 (mp-2858) <1 0 0> <1 0 1> 143.8
ZnO (mp-2133) <1 1 0> <1 0 1> 119.8
C (mp-66) <1 0 0> <0 0 1> 100.5
Fe3O4 (mp-19306) <1 0 0> <1 1 1> 218.3
ZrO2 (mp-2858) <1 0 1> <1 0 0> 130.4
LiNbO3 (mp-3731) <1 1 1> <1 0 0> 130.4
Te2W (mp-22693) <1 0 1> <1 1 0> 202.9
KCl (mp-23193) <1 0 0> <0 0 1> 40.2
TeO2 (mp-2125) <1 0 1> <1 0 0> 78.2
C (mp-48) <0 0 1> <1 1 1> 109.1
CdS (mp-672) <1 0 0> <1 0 1> 143.8
ZnSe (mp-1190) <1 1 0> <1 0 0> 234.7
GdScO3 (mp-5690) <1 1 0> <0 0 1> 261.4
Up to 50 entries displayed.
†minimal coincident interface area.

Elasticity

Reference for tensor and properties:
Visualize with ELATE
Stiffness Tensor Cij (GPa)
504 152 152 0 0 0
152 263 145 0 0 0
152 145 263 0 0 0
0 0 0 222 0 0
0 0 0 0 129 0
0 0 0 0 0 129
Compliance Tensor Sij (10-12Pa-1)
2.6 -1 -1 0 0 0
-1 5.8 -2.7 0 0 0
-1 -2.7 5.8 0 0 0
0 0 0 4.5 0 0
0 0 0 0 7.7 0
0 0 0 0 0 7.7
Shear Modulus GV
135 GPa
Bulk Modulus KV
214 GPa
Shear Modulus GR
111 GPa
Bulk Modulus KR
197 GPa
Shear Modulus GVRH
123 GPa
Bulk Modulus KVRH
206 GPa
Elastic Anisotropy
1.16
Poisson's Ratio
0.25

Similar Structures beta feature

Explanation of dissimilarity measure: Documentation.
material dissimilarity Ehull # of elements
TiVO4 (mp-690490) 0.0908 0.033 3
NbCrO4 (mp-690470) 0.0568 0.027 3
LiV2F6 (mp-559701) 0.0822 0.000 3
Ga2TeO6 (mp-28931) 0.0987 0.000 3
FeSbO4 (mp-675127) 0.0904 0.000 3
Ta2CrNO5 (mp-782717) 0.2037 0.068 4
LiFe3(OF3)2 (mp-779990) 0.2261 0.005 4
LiV3(OF3)2 (mp-868491) 0.2277 0.000 4
Ta2CrNO5 (mp-849666) 0.2334 0.077 4
Ta2CrNO5 (mp-849504) 0.2043 0.065 4
MnO2 (mp-714975) 0.0557 0.030 2
NiF2 (mp-559798) 0.0548 0.000 2
RhI2 (mp-862601) 0.0465 0.146 2
ZnF2 (mp-1873) 0.0528 0.000 2
CaCl2 (mp-22904) 0.0461 0.000 2
Up to 5 similar elemental, binary, ternary, quaternary, etc. structures displayed (dissimilarity threshold 0.75). Ehull: energy above hull per atom [eV].

Synthesis Descriptions

10.1007/s10853-010-4915-4
The (10Li2O20GeO230ZnO(40-x)Bi2O3xFe2O3 where x=0.0, 3, 6, and 9mol%) glasses, were synthesized by following melt-quenching technique using analytical grade GeO2, Bi2O3, Fe2O3, ZnO, and lithium [...]
10.1016/j.actamat.2009.03.009
The materials used were TZP doped with either TiO2 or GeO2 and TZP co-doped with TiO2 and GeO2. The starting powders were tetragonal ZrO2 powders containing 3mol.% Y2O3 (TZ3Y; Tosoh), TiO2 (titanium( [...]
chef hat mixing beaker

Explore more synthesis descriptions for materials of composition GeO2.

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: Ge_d O
Final Energy/Atom
-6.4549 eV
Corrected Energy
-41.4774 eV
Uncorrected energy = -38.7294 eV Composition-based energy adjustment (-0.687 eV/atom x 4.0 atoms) = -2.7480 eV Corrected energy = -41.4774 eV

Detailed input parameters and outputs for all calculations

Show JSON History Show BibTex Citation Download BibTex Citation
ICSD IDs
  • 158592
  • 637464
  • 84574
  • 637465
  • 158594
  • 158593
  • 158590
  • 158589
  • 94238
  • 158596
  • 158595
  • 158591
  • 16637
  • 281599
  • 637460
  • 158597
  • 9162
  • 92551
Submitted by
User remarks:
  • High pressure experimental phase
  • Germanium oxide

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)