Ca2Na2O8V2
Ca2Na2O8V2 is a thermodynamically stable, wide-gap insulating oxide composed of calcium, sodium, oxygen, and vanadium.
About Ca2Na2O8V2
Ca2Na2O8V2 is a complex oxide compound characterized by its robust thermodynamic stability, placing it directly on the convex hull of stable phases. Its composition, involving calcium, sodium, and vanadium, results in a structurally distinct framework that maintains integrity under standard conditions.
As a wide-gap insulating material, this compound serves as a valuable subject for fundamental solid-state chemistry. Its electronic character makes it an interesting candidate for investigations into dielectric behavior and structural coordination within multi-component oxide systems.
Key Properties
Cross-validated computational properties for Ca2Na2O8V2, aggregated across 3 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 Ca2Na2O8V2, 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. |
|---|---|---|---|---|---|
| Cmcm (No. 63) | orthorhombic | 3.69 | 0.0000 | -7.372 | 2.91 |
| Cmcm (No. 63) | orthorhombic | 3.73 | 0.0748 | -7.298 | 2.86 |
| Cmcm (No. 63) | — | — | — | — | — |
| Cmcm (No. 63) | — | — | — | — | — |
| — | — | — | — | — | 2.42 |
Applications
Where Ca2Na2O8V2 is used.
Frequently Asked Questions
Common questions about Ca2Na2O8V2, answered from cross-validated data.
What is Ca2Na2O8V2?
Ca2Na2O8V2 is a thermodynamically stable, wide-gap insulating oxide composed of calcium, sodium, oxygen, and vanadium.
What is Ca2Na2O8V2 used for?
What is the band gap of Ca2Na2O8V2?
Is Ca2Na2O8V2 a metal, semiconductor, or insulator?
Is Ca2Na2O8V2 thermodynamically stable?
What is the crystal structure of Ca2Na2O8V2?
What is the density of Ca2Na2O8V2?
How many polymorphs of Ca2Na2O8V2 are known?
What elements does Ca2Na2O8V2 contain?
Where does the data for Ca2Na2O8V2 come from?
How It Compares
As a thermodynamically stable oxide, Ca2Na2O8V2 represents a well-defined structural phase within the broader landscape of complex quaternary oxides, serving as a reliable reference point for researchers studying the stability and electronic properties of vanadium-based materials.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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