GePbO3
Lead germanate is a crystalline inorganic compound that exhibits ferroelectric properties. It is primarily studied for its potential utility in specialized electronic and optical devices due to its unique structural characteristics.
GeOPb
Overview
Key Properties
Cross-validated computational properties for GePbO3, aggregated across 4 databases.
Band GapEnergy needed to move an electron from the valence band to the conduction band. Lower or zero values tend to behave more metallic; larger gaps are more insulating or semiconducting.
2.71–2.93 eV
Range across DFT structures
Energy Above HullThermodynamic distance from the most stable set of competing phases. 0 eV/atom is on the convex hull; small positive values may still be experimentally accessible.
0.000 eV/atom
Best (lowest) across sources
StabilityA plain-language summary of the best reported energy-above-hull result. It reflects whether the lowest-energy structure is on, near, or far from the stability hull.
On hull (stable)
2 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
9
4 databases, 5 space groups
Crystallography
Reported Structures
Lowest-energy structures reported for GePbO3, ranked by energy above hull.
| Space GroupSymmetry classification of the crystal arrangement. The number is the international space-group index. | Crystal SystemBroad lattice family, such as cubic, tetragonal, monoclinic, or triclinic, derived from unit-cell symmetry. | Band Gap (eV)Electronic gap calculated for this specific reported structure, measured in electronvolts. | E above hull (eV/atom)Thermodynamic distance from the convex hull for this structure, normalized per atom. Lower is generally more stable. | E/atom (eV)Computed total energy normalized per atom. Use energy above hull, not this value alone, when comparing stability. | Density (g/cm³)Mass per relaxed crystal volume, reported in grams per cubic centimeter. |
|---|---|---|---|---|---|
| R-3 (No. 148) | trigonal | 2.71 | 0.0000 | -6.565 | 6.36 |
| P2/c (No. 13) | monoclinic | 2.93 | 0.0131 | -6.552 | 6.78 |
| Pm-3m (No. 221) | cubic | 0.00 | 0.2178 | -6.347 | 9.26 |
| P4mm (No. 99) | — | — | — | — | — |
| Pm-3m (No. 221) | — | — | — | — | — |
| R-3 (No. 148) | Trigonal | — | — | — | 6.07 |
| No. 0 | unknown | — | — | — | 1.06 |
| R-3 (No. 148) | Trigonal | — | — | — | 6.44 |
| R-3 (No. 148) | Trigonal | — | — | — | 6.24 |
Uses
Applications
Where GePbO3 is used.
Optical signal processingFerroelectric researchPiezoelectric device development
Reference
Frequently Asked Questions
Common questions about GePbO3, answered from cross-validated data.
What is GePbO3?
Lead germanate is a crystalline inorganic compound that exhibits ferroelectric properties. It is primarily studied for its potential utility in specialized electronic and optical devices due to its unique structural characteristics.
More questions
What is GePbO3 used for?
GePbO3 is used in optical signal processing, ferroelectric research, and piezoelectric device development.
What is the band gap of GePbO3?
GePbO3 has a DFT-computed band gap of 2.71–2.93 eV across 9 reported structures.
Is GePbO3 a metal, semiconductor, or insulator?
With a band gap up to 2.93 eV it is a semiconductor.
Is GePbO3 thermodynamically stable?
Yes — GePbO3 sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
What is the crystal structure of GePbO3?
The lowest-energy reported polymorph of GePbO3 is trigonal symmetry, space group R-3 (No. 148).
What is the density of GePbO3?
The computed density of the ground-state structure of GePbO3 is 6.36 g/cm³.
How many polymorphs of GePbO3 are known?
9 structures of GePbO3 are reported across 4 databases, spanning 5 distinct space groups.
What elements does GePbO3 contain?
GePbO3 contains Ge, O, and Pb (3 elements).
Where does the data for GePbO3 come from?
GePbO3 data is cross-referenced from materials_project, jarvis, mpaloe, cod.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
- mpaloe — Data from mpaloe.
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
Analyze GePbO3 in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 53 integrated data sources.
Explore the Platform →