Warnings: [?]
  1. Large change in a lattice parameter during relaxation.
  2. Large change in volume during relaxation.

Tags: Acanthite 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
Formation Energy / Atom
-0.235 eV

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

Energy Above Hull / Atom
0.044 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.

7.26 g/cm3

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

Decomposes To
Band Gap
0.161 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
P212121 [19]
P 2ac 2ab
Point Group
Crystal System
We have not yet calculated a detailed bandstructure for this material

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%)


A full elastic tensor has not been calculated for this material. Registered users can view statistical-learning-based predictions of this material's bulk and shear moduli.

Once you have registered you can also "vote" for full calculation of this material's elastic properties.

Similar Structures beta feature

Explanation of dissimilarity measure: Documentation.
material dissimilarity Ehull # of elements
La4Ni3Pb4 (mp-602393) 0.6627 0.157 3
KSm2Cl5 (mp-568044) 0.6389 0.102 3
Co(TePd)2 (mp-12465) 0.6190 0.000 3
YbCuBi (mp-22953) 0.6665 0.000 3
TlCu3Se2 (mp-8800) 0.6636 0.017 3
Ag2Se (mp-568889) 0.5728 0.128 2
SrIn (mp-608072) 0.5238 0.003 2
Mg2Si3 (mp-1073199) 0.5134 0.256 2
SrIn (mp-655461) 0.4984 0.000 2
Ag2Se (mp-568936) 0.3039 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

In this study, Ag2O nanocubes, rhombicuboctahedra, octahedra, and extended hexapods were synthesized in an aqueous solution following our reported procedure without the use of a capping surfactant.8 T [...]
The technology of colloidal Ag2S QD preparation, as well as the morphology and absorption properties of the dye solution and QDs dispersed in gelatin, was described elsewhere [10, 13]. Briefly, two so [...]
chef hat mixing beaker

Explore more synthesis descriptions for materials of composition Ag2S.

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Calculation Summary

Structure Optimization

Run Type
Energy Cutoff
520 eV
# of K-points
U Values
Final Energy/Atom
-3.2752 eV
Corrected Energy
-41.9558 eV
-41.9558 eV = -39.3020 eV (uncorrected energy) - 2.6538 eV (MP Anion Correction)

Detailed input parameters and outputs for all calculations

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  • 262634
  • 262635
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User remarks:
  • Acanthite
  • High pressure experimental phase
  • Silver(I) sulfide - HP1-phase (6.9GPa)

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)