Sm2Zr2O7
Samarium zirconate
Samarium zirconate is a stable, insulating ceramic material widely utilized for its thermal protection and ion-conducting capabilities in advanced engineering.
About Samarium zirconate
Samarium zirconate is a complex oxide belonging to the fluorite-related family of materials. It is characterized by its wide-band-gap insulating nature and high thermodynamic stability, making it a robust candidate for demanding structural and electronic environments.
This material is primarily valued for its role as an oxygen-ion conductor. Its ability to maintain structural integrity under extreme conditions allows it to function effectively in high-temperature applications where thermal insulation and chemical durability are paramount.
Key Properties
Cross-validated computational properties for Samarium zirconate, aggregated across 2 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 Sm2Zr2O7, 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. |
|---|---|---|---|---|---|
| Fd-3m (No. 227) | cubic | 3.07 | 0.0000 | -9.416 | 6.59 |
| C2/m (No. 12) | monoclinic | 2.94 | 0.0154 | -9.401 | 6.42 |
| P21 (No. 4) | monoclinic | 3.96 | 0.0216 | -9.395 | 6.38 |
| P21/c (No. 14) | monoclinic | 3.64 | 0.0925 | -9.324 | 6.12 |
| Pmma (No. 51) | orthorhombic | 2.75 | 0.1898 | -9.227 | 6.53 |
| Fd-3m (No. 227) | — | — | — | — | — |
Synthesis Routes
Literature-extracted synthesis procedures targeting Sm2Zr2O7.
Applications
Where Samarium zirconate is used.
Frequently Asked Questions
Common questions about Samarium zirconate, answered from cross-validated data.
What is Sm2Zr2O7?
Samarium zirconate is a stable, insulating ceramic material widely utilized for its thermal protection and ion-conducting capabilities in advanced engineering.
What is Sm2Zr2O7 used for?
What is the band gap of Sm2Zr2O7?
Is Sm2Zr2O7 a metal, semiconductor, or insulator?
Is Sm2Zr2O7 thermodynamically stable?
What is the crystal structure of Sm2Zr2O7?
What is the density of Sm2Zr2O7?
How many polymorphs of Sm2Zr2O7 are known?
How is Sm2Zr2O7 synthesized?
What elements does Sm2Zr2O7 contain?
Where does the data for Sm2Zr2O7 come from?
How It Compares
Within the fluorite oxide-ion conductors class.
Within the family of fluorite-related oxides, Sm2Zr2O7 occupies a distinct position alongside compounds like La2Zr2O7 and Y2Zr2O7. While it shares the general structural framework of these zirconates, its specific cationic composition influences its defect chemistry and thermal expansion characteristics, often providing a balanced performance profile that bridges the gap between the more common lanthanum-based variants and yttrium-stabilized systems.
Related Compounds
Other Fluorite Oxide-Ion Conductors in the database.
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).
Analyze Sm2Zr2O7 in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 53 integrated data sources.
Explore the Platform →