material

Cr2O3
ID:

mp-19399
DOI:

10.17188/1194409

Tags: High pressure experimental phase Chromium oxide Dichromium trioxide Eskolaite, mesoporous Chromium sesquioxide Eskolaite

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
FM
Formation Energy / Atom
-2.350 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
4.89 g/cm3

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

Decomposes To
Stable
Band Gap
2.437 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
R3c [167]
Hall
-R 3 2"c
Point Group
3m
Crystal System
trigonal

Electronic Structure

Topological data for ICSD ID 25781 from Topological Materials Database
Topological Classification
SM*
Subclassification
ES†
Crossing Type
Line
* Semimetal
† Enforced Semimetal with Line or Plane degeneracy
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.

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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]
BN (mp-984) <0 0 1> <0 0 1> 0.000 202.2
Ag (mp-124) <1 1 1> <0 0 1> 0.001 89.9
SiC (mp-11714) <0 0 1> <0 0 1> 0.002 157.2
GaP (mp-2490) <1 1 1> <0 0 1> 0.003 157.2
SiC (mp-7631) <0 0 1> <0 0 1> 0.004 157.2
PbSe (mp-2201) <1 1 1> <0 0 1> 0.009 67.4
WSe2 (mp-1821) <0 0 1> <0 0 1> 0.014 67.4
MoSe2 (mp-1634) <0 0 1> <0 0 1> 0.014 67.4
CaF2 (mp-2741) <1 1 1> <0 0 1> 0.024 157.2
GaSb (mp-1156) <1 1 1> <0 0 1> 0.027 67.4
Au (mp-81) <1 1 1> <0 0 1> 0.031 89.9
CdSe (mp-2691) <1 1 1> <0 0 1> 0.049 67.4
Cu (mp-30) <1 1 1> <0 0 1> 0.056 22.5
CdWO4 (mp-19387) <0 1 0> <0 0 1> 0.061 292.0
LiGaO2 (mp-5854) <0 0 1> <1 0 0> 0.063 140.3
TiO2 (mp-2657) <1 1 1> <0 0 1> 0.071 202.2
Mg (mp-153) <0 0 1> <0 0 1> 0.072 269.6
Cu (mp-30) <1 0 0> <1 0 0> 0.083 210.5
SiC (mp-11714) <1 0 0> <1 0 0> 0.094 280.7
Si (mp-149) <1 1 1> <0 0 1> 0.107 157.2
CeO2 (mp-20194) <1 1 1> <0 0 1> 0.116 157.2
Fe2O3 (mp-24972) <1 1 0> <1 1 0> 0.138 121.5
Fe2O3 (mp-24972) <1 0 0> <1 0 0> 0.138 70.2
Ag (mp-124) <1 0 0> <0 0 1> 0.140 359.4
Te2Mo (mp-602) <1 0 0> <0 0 1> 0.140 269.6
Fe2O3 (mp-24972) <1 1 1> <1 1 1> 0.141 123.6
InAs (mp-20305) <1 1 0> <0 0 1> 0.145 269.6
Fe2O3 (mp-24972) <1 0 1> <1 0 1> 0.146 73.7
SiC (mp-11714) <1 1 0> <0 0 1> 0.149 269.6
ZnTe (mp-2176) <1 1 0> <0 0 1> 0.150 269.6
CeO2 (mp-20194) <1 1 0> <0 0 1> 0.152 336.9
MoS2 (mp-1434) <0 0 1> <0 0 1> 0.153 269.6
WS2 (mp-224) <0 0 1> <0 0 1> 0.154 269.6
Si (mp-149) <1 1 0> <0 0 1> 0.155 336.9
C (mp-66) <1 1 0> <0 0 1> 0.167 89.9
CdS (mp-672) <0 0 1> <0 0 1> 0.167 202.2
BaF2 (mp-1029) <1 1 1> <0 0 1> 0.170 67.4
C (mp-66) <1 1 1> <0 0 1> 0.171 22.5
BN (mp-984) <1 1 0> <0 0 1> 0.179 67.4
CaCO3 (mp-3953) <0 0 1> <0 0 1> 0.198 22.5
Ga2O3 (mp-886) <1 0 0> <0 0 1> 0.217 292.0
BN (mp-984) <1 0 0> <0 0 1> 0.217 157.2
GaSe (mp-1943) <0 0 1> <0 0 1> 0.219 89.9
ZnTe (mp-2176) <1 1 1> <0 0 1> 0.223 67.4
C (mp-48) <0 0 1> <0 0 1> 0.229 67.4
SiO2 (mp-6930) <1 1 0> <1 1 0> 0.233 243.1
SiO2 (mp-6930) <1 0 0> <1 0 0> 0.233 140.3
TeO2 (mp-2125) <0 0 1> <0 0 1> 0.234 359.4
C (mp-66) <1 0 0> <0 0 1> 0.242 247.1
Fe2O3 (mp-24972) <0 0 1> <0 0 1> 0.245 22.5
Up to 50 entries displayed.
†minimal coincident interface area.

Elasticity

Reference for tensor and properties:
Visualize with ELATE
Stiffness Tensor Cij (GPa)
348 142 137 -8 0 0
142 348 137 8 0 0
137 137 308 0 0 0
-8 8 0 136 0 0
0 0 0 0 136 -8
0 0 0 0 -8 103
Compliance Tensor Sij (10-12Pa-1)
3.8 -1.1 -1.2 0.3 0.0 0.0
-1.1 3.8 -1.2 -0.3 0.0 0.0
-1.2 -1.2 4.3 0.0 -0.0 -0.0
0.3 -0.3 0.0 7.4 0.0 0.0
0.0 0.0 -0.0 0.0 7.4 0.6
0.0 0.0 -0.0 0.0 0.6 9.7
Shear Modulus GV
114 GPa
Bulk Modulus KV
204 GPa
Shear Modulus GR
111 GPa
Bulk Modulus KR
203 GPa
Shear Modulus GVRH
113 GPa
Bulk Modulus KVRH
203 GPa
Elastic Anisotropy
0.15
Poisson's Ratio
0.27

Dielectric Properties

Reference for tensor and properties: Methodology
Dielectric Tensor εij∞ (electronic contribution)
6.23 -0.00 0.00
-0.00 6.23 -0.00
0.00 -0.00 6.49
Dielectric Tensor εij (total)
10.48 -0.00 0.00
-0.00 10.48 -0.00
0.00 -0.00 12.19
Polycrystalline dielectric constant εpoly∞
(electronic contribution)
6.32
Polycrystalline dielectric constant εpoly
(total)
11.05
Refractive Index n
2.51
Potentially ferroelectric?
Unknown

Equations of State

Reference:
Equation E0 (eV) V0 (Å3) B C
mie_gruneisen -7.940 10.332 11.459 6.184
pack_evans_james -7.940 10.333 1.269 3.397
vinet -7.941 10.326 11.659 5.204
tait -7.940 10.325 1.284 5.539
birch_euler -7.940 10.331 1.436 0.407
pourier_tarantola -7.942 10.323 0.220 2.462
birch_lagrange -7.949 10.327 0.821 6.125
murnaghan -7.938 10.344 1.240 3.260
Equations reference

Similar Structures beta feature

Explanation of dissimilarity measure: Documentation.
material dissimilarity Ehull # of elements
VCrO3 (mp-775827) 0.0943 0.009 3
VCrO3 (mp-770779) 0.0859 0.006 3
VCrO3 (mp-770843) 0.0938 0.008 3
VCrO3 (mp-770778) 0.0903 0.010 3
VCrO3 (mp-770849) 0.0947 0.008 3
Mg2VWO6 (mvc-5881) 0.3721 0.018 4
Mg2TiWO6 (mvc-5939) 0.4027 0.053 4
Mg2CrWO6 (mvc-5960) 0.3917 0.035 4
InNi2SbO6 (mp-1078367) 0.2895 0.000 4
ScNi2SbO6 (mp-1078244) 0.3139 0.000 4
Ho2S3 (mp-978093) 0.0303 0.012 2
Mn2O3 (mp-770543) 0.0495 0.059 2
Cr2O3 (mp-796301) 0.0048 0.000 2
Tm2S3 (mp-14787) 0.0322 0.020 2
Rh2O3 (mp-542734) 0.0212 0.029 2
Li4Fe2TeWO12 (mp-768021) 0.6447 0.070 5
Li4Mn2TeWO12 (mp-768044) 0.7178 0.058 5
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/s10854-017-7017-0
All the reagents employed in this study were used as received without further purification. The Cr2O3/WO3 nanocomposite were synthesized via a facile two-step hydrothermal process. [...]
10.1016/j.cattod.2011.03.057
A series of CeCr mixed oxides with 1, 3 and 5at.% Cr metal (Ce balance) were prepared by a coprecipitation method. Hereafter, they are denoted as x%Cr/y%CeO2, in which x (=100Cr/(Cr+Ce)) and y (=1 [...]
chef hat mixing beaker

Explore more synthesis descriptions for materials of composition Cr2O3.

Text computed by synthesisproject.org.

Calculation Summary

Elasticity

Methodology

Structure Optimization

Run Type
GGA+U
Energy Cutoff
520 eV
# of K-points
None
U Values
Cr: 3.7 eV
Pseudopotentials
VASP PAW: Cr_pv O
Final Energy/Atom
-7.9390 eV
Corrected Energy
-91.6557 eV
-91.6557 eV = -79.3900 eV (uncorrected energy) - 8.0520 eV (MP Advanced Correction) - 4.2137 eV (MP Anion Correction)

Detailed input parameters and outputs for all calculations

Show JSON History Show BibTex Citation Download BibTex Citation
ICSD IDs
  • 167269
  • 167284
  • 167275
  • 107035
  • 290235
  • 167289
  • 173470
  • 167283
  • 29298
  • 167288
  • 167287
  • 167270
  • 167272
  • 167290
  • 290244
  • 290242
  • 25781
  • 290234
  • 167280
  • 167281
  • 250078
  • 290241
  • 167268
  • 290238
  • 167279
  • 290245
  • 167271
  • 201105
  • 90157
  • 290243
  • 626479
  • 33642
  • 167278
  • 26791
  • 290196
  • 167274
  • 201104
  • 202619
  • 201103
  • 167273
  • 290239
  • 167277
  • 167291
  • 290236
  • 167276
  • 290237
  • 167282
  • 626484
  • 201102
  • 75577
  • 290240
  • 167286
  • 167285
  • 261801
  • 90158
Submitted by
User remarks:
  • Chromium oxide
  • Eskolaite

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)