Sr4NbCoO8
Sr4NbCoO8 is a semiconducting quaternary oxide that is considered a viable candidate for experimental synthesis due to its favorable thermodynamic stability.
About Sr4NbCoO8
Sr4NbCoO8 is a complex oxide composed of strontium, niobium, cobalt, and oxygen. As a semiconducting material, it represents a unique arrangement of transition metals within an oxygen-coordinated framework, offering intriguing electronic properties for solid-state research.
Its status as a near-hull phase suggests that it is thermodynamically accessible and likely synthesizable under appropriate laboratory conditions. With multiple reported structures, it serves as a subject of interest for researchers investigating the interplay between structural geometry and electronic behavior in quaternary oxides.
Key Properties
Cross-validated computational properties for Sr4NbCoO8, 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 Sr4NbCoO8, 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. |
|---|---|---|---|---|---|
| Cmmm (No. 65) | orthorhombic | 1.45 | 0.0060 | -7.426 | 5.19 |
| Cmmm (No. 65) | — | — | — | — | — |
| Cmmm (No. 65) | Orthorhombic | — | — | — | 5.54 |
| Cmmm (No. 65) | Orthorhombic | — | — | — | 5.19 |
| Cmmm (No. 65) | Orthorhombic | — | — | — | 5.71 |
Applications
Where Sr4NbCoO8 is used.
Frequently Asked Questions
Common questions about Sr4NbCoO8, answered from cross-validated data.
What is Sr4NbCoO8?
Sr4NbCoO8 is a semiconducting quaternary oxide that is considered a viable candidate for experimental synthesis due to its favorable thermodynamic stability.
What is Sr4NbCoO8 used for?
What is the band gap of Sr4NbCoO8?
Is Sr4NbCoO8 a metal, semiconductor, or insulator?
Is Sr4NbCoO8 thermodynamically stable?
What is the crystal structure of Sr4NbCoO8?
What is the density of Sr4NbCoO8?
How many polymorphs of Sr4NbCoO8 are known?
What elements does Sr4NbCoO8 contain?
Where does the data for Sr4NbCoO8 come from?
How It Compares
As a quaternary oxide, Sr4NbCoO8 occupies a specialized niche in materials science where the combination of niobium and cobalt allows for tunable electronic characteristics. Without direct structural siblings in this specific class, it stands as a distinct candidate for exploring how the integration of diverse transition metal cations influences the stability and semiconducting nature of complex strontium-based oxides.
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.
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