Sr5Sb3
Sr5Sb3 is a stable, semimetallic strontium-antimony compound that serves as a valuable subject for research into the electronic properties of binary pnictides.
About Sr5Sb3
Sr5Sb3 is a thermodynamically stable inorganic compound composed of strontium and antimony. It exists on the convex hull, indicating robust structural integrity under standard conditions, and exhibits a near-zero-gap electronic character that classifies it as a semimetallic material. This compound is of particular interest to researchers studying the complex phase space of alkaline-earth pnictides. Its structural versatility is highlighted by its presence across multiple reported configurations in materials databases, making it a significant subject for fundamental studies in solid-state chemistry and electronic structure theory.
Key Properties
Cross-validated computational properties for Sr5Sb3, 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 Sr5Sb3, 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. |
|---|---|---|---|---|---|
| P63/mcm (No. 193) | hexagonal | 0.00 | 0.0000 | -3.673 | 4.51 |
| Pnma (No. 62) | orthorhombic | 0.09 | 0.0014 | -3.672 | 4.48 |
| P63/mcm (No. 193) | Hexagonal | — | — | — | 4.48 |
| P63/mcm (No. 193) | Hexagonal | — | — | — | 4.52 |
| P63/mcm (No. 193) | Hexagonal | — | — | — | 4.51 |
| Pnma (No. 62) | Orthorhombic | — | — | — | 4.46 |
| P63/mcm (No. 193) | — | — | — | — | — |
| Pnma (No. 62) | Orthorhombic | — | — | — | 4.43 |
| Pnma (No. 62) | Orthorhombic | — | — | — | 4.46 |
Applications
Where Sr5Sb3 is used.
Frequently Asked Questions
Common questions about Sr5Sb3, answered from cross-validated data.
What is Sr5Sb3?
Sr5Sb3 is a stable, semimetallic strontium-antimony compound that serves as a valuable subject for research into the electronic properties of binary pnictides.
What is Sr5Sb3 used for?
What is the band gap of Sr5Sb3?
Is Sr5Sb3 a metal, semiconductor, or insulator?
Is Sr5Sb3 thermodynamically stable?
What is the crystal structure of Sr5Sb3?
What is the density of Sr5Sb3?
How many polymorphs of Sr5Sb3 are known?
What elements does Sr5Sb3 contain?
Where does the data for Sr5Sb3 come from?
How It Compares
As a member of the strontium-antimony binary system, Sr5Sb3 occupies a unique position within the phase diagram. While many compounds in this class are characterized by their specific stoichiometry and bonding arrangements, Sr5Sb3 is notable for its stability and semimetallic nature, serving as a key reference point for understanding the electronic behavior of strontium-rich pnictides.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- mpaloe — Data from mpaloe.
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
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