Ca8Cd4Sb8
Ca8Cd4Sb8 is a stable, semiconducting ternary compound consisting of calcium, cadmium, and antimony.
About Ca8Cd4Sb8
Ca8Cd4Sb8 is a complex ternary compound composed of calcium, cadmium, and antimony. As a thermodynamically stable phase located on the convex hull, it represents a well-defined structural arrangement that is of significant interest for fundamental materials research.
This material exhibits semiconducting electronic character, making it a subject of study for potential applications in electronic or thermoelectric devices. Its structural stability suggests it may serve as a robust candidate for exploring new functional properties in ternary pnictide systems.
Key Properties
Cross-validated computational properties for Ca8Cd4Sb8, 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 Ca8Cd4Sb8, 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. |
|---|---|---|---|---|---|
| Pnma (No. 62) | orthorhombic | 0.32 | 0.0000 | -3.501 | 4.84 |
| No. 0 | unknown | — | — | — | 1.24 |
| Pnma (No. 62) | — | — | — | — | — |
| — | — | — | — | — | 3.68 |
Applications
Where Ca8Cd4Sb8 is used.
Frequently Asked Questions
Common questions about Ca8Cd4Sb8, answered from cross-validated data.
What is Ca8Cd4Sb8?
Ca8Cd4Sb8 is a stable, semiconducting ternary compound consisting of calcium, cadmium, and antimony.
What is Ca8Cd4Sb8 used for?
What is the band gap of Ca8Cd4Sb8?
Is Ca8Cd4Sb8 a metal, semiconductor, or insulator?
Is Ca8Cd4Sb8 thermodynamically stable?
What is the crystal structure of Ca8Cd4Sb8?
What is the density of Ca8Cd4Sb8?
How many polymorphs of Ca8Cd4Sb8 are known?
What elements does Ca8Cd4Sb8 contain?
Where does the data for Ca8Cd4Sb8 come from?
How It Compares
As a specialized ternary compound, Ca8Cd4Sb8 occupies a unique position in the landscape of calcium-cadmium-antimony materials. While it lacks direct structural siblings in this specific class, its stability and semiconducting nature provide a benchmark for understanding how the integration of alkaline earth and transition metals influences electronic behavior in complex pnictide lattices.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
- 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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