material

Na2H4Pd

ID:

mp-643260

DOI:

10.17188/1280279


Tags: Sodium tetradeuteriopalladate

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
-0.336 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
2.73 g/cm3

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

Decomposes To
Stable
Band Gap
2.283 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
I4/mmm [139]
Hall
-I 4 2
Point Group
4/mmm
Crystal System
tetragonal

Electronic Structure

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:
substrate material substrate orientation film orientation elastic energy [meV] MCIA [Å2]
PbS (mp-21276) <1 0 0> <0 0 1> 0.000 144.2
BaTiO3 (mp-5986) <0 0 1> <0 0 1> 0.000 144.2
NaCl (mp-22862) <1 0 0> <0 0 1> 0.000 259.6
CdSe (mp-2691) <1 1 1> <1 1 0> 0.001 200.4
ZnO (mp-2133) <0 0 1> <1 1 0> 0.001 150.3
GaSb (mp-1156) <1 1 1> <1 1 0> 0.001 200.4
C (mp-66) <1 0 0> <0 0 1> 0.001 115.4
TiO2 (mp-390) <0 0 1> <0 0 1> 0.002 28.8
MoSe2 (mp-1634) <0 0 1> <1 1 0> 0.003 200.4
WSe2 (mp-1821) <0 0 1> <1 1 0> 0.003 200.4
MgO (mp-1265) <1 0 0> <0 0 1> 0.003 144.2
PbSe (mp-2201) <1 1 1> <1 1 0> 0.004 200.4
CdS (mp-672) <0 0 1> <1 1 0> 0.004 200.4
YVO4 (mp-19133) <0 0 1> <0 0 1> 0.005 259.6
CdTe (mp-406) <1 1 0> <1 0 0> 0.005 248.0
InSb (mp-20012) <1 1 0> <1 0 0> 0.006 248.0
GaSe (mp-1943) <0 0 1> <1 1 0> 0.007 50.1
ZnTe (mp-2176) <1 1 1> <1 1 0> 0.008 200.4
LiF (mp-1138) <1 1 1> <1 1 0> 0.009 200.4
KP(HO2)2 (mp-23959) <0 1 0> <0 0 1> 0.010 230.8
Te2Mo (mp-602) <0 0 1> <0 0 1> 0.010 230.8
BN (mp-984) <0 0 1> <1 1 0> 0.010 200.4
InAs (mp-20305) <1 1 1> <1 1 0> 0.010 200.4
Au (mp-81) <1 1 0> <1 0 0> 0.011 248.0
Fe3O4 (mp-19306) <1 0 0> <0 0 1> 0.012 144.2
LaAlO3 (mp-2920) <1 0 0> <1 0 0> 0.012 70.8
LaAlO3 (mp-2920) <0 0 1> <0 0 1> 0.012 201.9
BaTiO3 (mp-5986) <1 1 0> <1 1 1> 0.013 289.0
KP(HO2)2 (mp-23959) <1 0 0> <0 0 1> 0.014 115.4
GdScO3 (mp-5690) <1 1 0> <0 0 1> 0.017 259.6
SiC (mp-8062) <1 1 1> <0 0 1> 0.017 230.8
Al (mp-134) <1 1 1> <1 1 0> 0.020 200.4
Bi2Se3 (mp-541837) <0 0 1> <1 1 0> 0.020 200.4
Al2O3 (mp-1143) <0 0 1> <1 0 0> 0.021 318.8
Mg (mp-153) <1 0 1> <0 0 1> 0.023 317.3
TiO2 (mp-2657) <1 1 1> <1 0 0> 0.024 177.1
Ag (mp-124) <1 1 0> <1 0 0> 0.024 248.0
C (mp-66) <1 1 0> <1 1 0> 0.024 250.5
KTaO3 (mp-3614) <1 0 0> <0 0 1> 0.024 144.2
BaTiO3 (mp-5986) <1 0 0> <1 0 1> 0.025 137.0
KTaO3 (mp-3614) <1 1 0> <1 0 0> 0.026 318.8
BaTiO3 (mp-5986) <1 0 1> <1 1 0> 0.026 300.6
Ge3(BiO3)4 (mp-23560) <1 0 0> <0 0 1> 0.027 115.4
BN (mp-984) <1 0 0> <0 0 1> 0.027 57.7
KP(HO2)2 (mp-23959) <0 0 1> <0 0 1> 0.028 230.8
ZnO (mp-2133) <1 1 0> <1 0 1> 0.029 91.4
AlN (mp-661) <1 1 1> <1 0 1> 0.029 228.4
TiO2 (mp-2657) <1 0 0> <1 0 0> 0.031 177.1
InSb (mp-20012) <1 0 0> <1 0 0> 0.031 177.1
InP (mp-20351) <1 0 0> <0 0 1> 0.032 144.2
Up to 50 entries displayed.
minimal coincident interface area.

Elasticity

Reference for tensor and properties:
Stiffness Tensor Cij (GPa)
51 9 10 0 0 0
9 51 10 0 0 0
10 10 46 0 0 0
0 0 0 7 0 0
0 0 0 0 7 0
0 0 0 0 0 10
Compliance Tensor Sij (10-12Pa-1)
20.9 -2.9 -3.7 0 0 0
-2.9 20.9 -3.7 0 0 0
-3.7 -3.7 23.2 0 0 0
0 0 0 141.6 0 0
0 0 0 0 141.6 0
0 0 0 0 0 103.5
Shear Modulus GV
13 GPa
Bulk Modulus KV
23 GPa
Shear Modulus GR
10 GPa
Bulk Modulus KR
23 GPa
Shear Modulus GVRH
11 GPa
Bulk Modulus KVRH
23 GPa
Elastic Anisotropy
1.21
Poisson's Ratio
0.28

Dielectric Properties

Reference for tensor and properties: Methodology
Dielectric Tensor εij (electronic contribution)
3.52 0.00 0.00
0.00 3.52 0.00
0.00 0.00 3.38
Dielectric Tensor εij (total)
7.61 0.00 0.00
0.00 7.61 0.00
0.00 0.00 6.93
Polycrystalline dielectric constant εpoly
(electronic contribution)
3.47
Polycrystalline dielectric constant εpoly
(total)
7.38
Refractive Index n
1.86
Potentially ferroelectric?
Unknown

Similar Structures beta feature

Explanation of dissimilarity measure: Documentation.
material dissimilarity Ehull # of elements
Cs2PdCl4 (mp-30314) 0.4300 0.000 3
Cs2PtCl4 (mp-29216) 0.3893 0.000 3
K2H4Pd (mp-643257) 0.4538 0.000 3
Na2H4Pt (mp-697096) 0.1391 0.000 3
Cs2PdCl4 (mp-1078085) 0.4171 0.000 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
700 eV
# of K-points
None
U Values
--
Pseudopotentials
VASP PAW: Na_pv H Pd
Final Energy/Atom
-3.3020 eV
Corrected Energy
-23.8300 eV
Uncorrected energy = -23.1140 eV Composition-based energy adjustment (-0.179 eV/atom x 4.0 atoms) = -0.7160 eV Corrected energy = -23.8300 eV

Detailed input parameters and outputs for all calculations


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ICSD IDs
  • 80003
Submitted by
User remarks:
  • Sodium tetradeuteriopalladate

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)