SrLa2Mn2O7
SrLa2Mn2O7 is a semiconducting complex oxide composed of strontium, lanthanum, manganese, and oxygen that is primarily utilized in academic materials research.
About SrLa2Mn2O7
SrLa2Mn2O7 is a complex oxide featuring strontium, lanthanum, manganese, and oxygen. As a semiconducting material, it represents a specific arrangement of transition metal and rare-earth elements that is of interest for fundamental solid-state physics studies. While it exhibits a variety of structural configurations across multiple databases, its thermodynamic profile suggests it exists in a metastable state relative to its constituent phases. This metastability is a key consideration for researchers looking to synthesize or stabilize the compound for experimental investigation. Its electronic properties are primarily driven by the manganese-oxygen framework, which is characteristic of materials often explored for their potential in electronic or magnetic applications.
Key Properties
Cross-validated computational properties for SrLa2Mn2O7, 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 SrLa2Mn2O7, 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. |
|---|---|---|---|---|---|
| I4mm (No. 107) | tetragonal | 0.00 | 0.1263 | -8.376 | 6.12 |
| Amm2 (No. 38) | orthorhombic | 0.37 | 0.1376 | -8.365 | 6.10 |
| Ama2 (No. 40) | — | — | — | — | — |
| I4mm (No. 107) | Tetragonal | — | — | — | 6.12 |
| I4mm (No. 107) | Tetragonal | — | — | — | 6.34 |
| I4mm (No. 107) | Tetragonal | — | — | — | 6.54 |
Applications
Where SrLa2Mn2O7 is used.
Frequently Asked Questions
Common questions about SrLa2Mn2O7, answered from cross-validated data.
What is SrLa2Mn2O7?
SrLa2Mn2O7 is a semiconducting complex oxide composed of strontium, lanthanum, manganese, and oxygen that is primarily utilized in academic materials research.
What is SrLa2Mn2O7 used for?
What is the band gap of SrLa2Mn2O7?
Is SrLa2Mn2O7 a metal, semiconductor, or insulator?
Is SrLa2Mn2O7 thermodynamically stable?
What is the crystal structure of SrLa2Mn2O7?
What is the density of SrLa2Mn2O7?
How many polymorphs of SrLa2Mn2O7 are known?
What elements does SrLa2Mn2O7 contain?
Where does the data for SrLa2Mn2O7 come from?
How It Compares
As a unique member of the complex oxide family, SrLa2Mn2O7 serves as a distinct case study in how stoichiometry influences the stability and electronic behavior of manganese-based systems. Unlike more robust, thermodynamically favored oxides, this compound occupies a specific niche where its semiconducting nature and structural diversity provide researchers with a platform to probe the limits of phase stability in transition metal 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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