AgSbTe2
AgSbTe2 is a metallic ternary chalcogenide used primarily in the development of phase-change memory technologies.
About AgSbTe2
AgSbTe2 is a complex ternary chalcogenide that functions as a metallic phase-change material. Its structural versatility and proximity to thermodynamic stability make it a compelling candidate for advanced electronic switching applications where rapid state transitions are required.
This compound is frequently studied for its role in data storage technologies. Because it remains near the hull of stability, it is considered highly synthesizable and serves as a critical building block for understanding the behavior of chalcogenide-based memory devices.
Key Properties
Cross-validated computational properties for AgSbTe2, aggregated across 6 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.
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of AgSbTe2. Tight agreement means computed properties can be trusted without re-running calculations.
Agreement ScoreA normalized confidence score summarizing how closely independent DFT databases agree. Higher scores mean tighter cross-source agreement.
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
Reported Structures
Lowest-energy structures reported for AgSbTe2, 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. |
|---|---|---|---|---|---|
| R-3m (No. 166) | trigonal | 0.00 | 0.0214 | -3.606 | 6.98 |
| P4/mmm (No. 123) | tetragonal | 0.00 | 0.0612 | -3.566 | 7.02 |
| P42/mmc (No. 131) | tetragonal | 0.00 | 0.1528 | -3.475 | 7.06 |
| P4/mmm (No. 123) | tetragonal | 0.00 | 0.1652 | -3.462 | 7.04 |
| P4/mmm (No. 123) | tetragonal | 0.00 | 0.3220 | -3.305 | 7.66 |
| P2/m (No. 10) | monoclinic | 0.00 | 0.4110 | -3.217 | 5.73 |
| P4/mmm (No. 123) | tetragonal | 0.00 | 0.9595 | -2.668 | 6.87 |
| Fd-3m (No. 227) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| Fd-3m (No. 227) | — | — | — | — | — |
| Fd-3m (No. 227) | — | — | — | — | — |
| Fd-3m (No. 227) | — | — | — | — | — |
Applications
Where AgSbTe2 is used.
Frequently Asked Questions
Common questions about AgSbTe2, answered from cross-validated data.
What is AgSbTe2?
AgSbTe2 is a metallic ternary chalcogenide used primarily in the development of phase-change memory technologies.
What is AgSbTe2 used for?
What is the band gap of AgSbTe2?
Is AgSbTe2 a metal, semiconductor, or insulator?
Is AgSbTe2 thermodynamically stable?
What is the crystal structure of AgSbTe2?
What is the density of AgSbTe2?
How many polymorphs of AgSbTe2 are known?
What elements does AgSbTe2 contain?
Where does the data for AgSbTe2 come from?
How It Compares
Within the phase-change memory materials class.
Within the landscape of phase-change materials, AgSbTe2 offers a distinct metallic character that complements the behavior of more traditional semiconductors like GeTe or Sb2Te3. While many of its siblings are optimized for specific crystallization kinetics, AgSbTe2 is valued for its unique structural flexibility and its ability to integrate into complex multi-component memory systems.
Related Compounds
Other Phase-Change Memory Materials 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).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
- mpaloe — Data from mpaloe.
Analyze AgSbTe2 in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 53 integrated data sources.
Explore the Platform →