CuGeO3
Copper germanate · Copper metagermanate
Copper germanate is an inorganic crystalline compound recognized for its unique magnetic properties and structural characteristics. It is primarily studied in the field of condensed matter physics due to its behavior as a spin-Peierls system.
Key Properties
Cross-validated computational properties for Copper germanate, 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.
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.
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.
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
Reported Structures
Lowest-energy structures reported for CuGeO3, 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. |
|---|---|---|---|---|---|
| Cmce (No. 64) | orthorhombic | 0.00 | 0.0687 | -6.316 | 4.77 |
| Pnnm (No. 58) | orthorhombic | 0.45 | 0.0725 | -6.312 | 4.75 |
| Pbam (No. 55) | orthorhombic | 0.00 | 0.0726 | -6.312 | 4.79 |
| Pmma (No. 51) | orthorhombic | 0.00 | 0.0801 | -6.304 | 4.75 |
| Pmna (No. 53) | orthorhombic | 0.20 | 0.0874 | -6.297 | 4.95 |
| P21/c (No. 14) | monoclinic | 0.00 | 0.1406 | -6.244 | 5.75 |
| Pmma (No. 51) | orthorhombic | 0.00 | 0.3839 | -6.000 | 3.93 |
| P21/c (No. 14) | Monoclinic | — | — | — | 6.19 |
| — | — | — | — | — | — |
| P21/c (No. 14) | Monoclinic | — | — | — | 5.75 |
| Pmma (No. 51) | Orthorhombic | — | — | — | 4.88 |
| P21/c (No. 14) | — | — | — | — | — |
Applications
Where Copper germanate is used.
Frequently Asked Questions
Common questions about Copper germanate, answered from cross-validated data.
What is CuGeO3?
Copper germanate is an inorganic crystalline compound recognized for its unique magnetic properties and structural characteristics. It is primarily studied in the field of condensed matter physics due to its behavior as a spin-Peierls system.
What is CuGeO3 used for?
What is the band gap of CuGeO3?
Is CuGeO3 a metal, semiconductor, or insulator?
Is CuGeO3 thermodynamically stable?
What is the crystal structure of CuGeO3?
What is the density of CuGeO3?
How many polymorphs of CuGeO3 are known?
What elements does CuGeO3 contain?
Where does the data for CuGeO3 come from?
Related Compounds
Other Spinel Oxide Catalysts in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- mpaloe — Data from mpaloe.
- alexandria — Data from alexandria.
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
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