AgTe2Y
AgTe2Y is a thermodynamically stable semiconducting compound utilized in the development of advanced phase-change memory technologies.
About AgTe2Y
AgTe2Y is a semiconducting ternary compound that occupies a stable position on the thermodynamic convex hull. As a member of the phase-change memory material class, it exhibits the structural flexibility necessary for reversible transitions between amorphous and crystalline states, which is essential for data storage applications. Its unique elemental composition allows for distinct electronic behavior compared to binary tellurides. The material is of significant interest for researchers investigating high-performance non-volatile memory devices that require reliable switching characteristics and thermal endurance. Its stability suggests potential for long-term data retention in advanced electronic architectures.
Key Properties
Cross-validated computational properties for AgTe2Y, 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 AgTe2Y, 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. |
|---|---|---|---|---|---|
| P-421m (No. 113) | tetragonal | 0.90 | 0.0000 | -5.036 | 6.27 |
| P3m1 (No. 156) | trigonal | 1.08 | 0.0171 | -5.018 | 5.89 |
| — | — | — | — | — | 7.03 |
| P4/mmm (No. 123) | — | — | — | — | — |
| — | — | — | — | — | 7.12 |
Applications
Where AgTe2Y is used.
Frequently Asked Questions
Common questions about AgTe2Y, answered from cross-validated data.
What is AgTe2Y?
AgTe2Y is a thermodynamically stable semiconducting compound utilized in the development of advanced phase-change memory technologies.
What is AgTe2Y used for?
What is the band gap of AgTe2Y?
Is AgTe2Y a metal, semiconductor, or insulator?
Is AgTe2Y thermodynamically stable?
What is the crystal structure of AgTe2Y?
What is the density of AgTe2Y?
How many polymorphs of AgTe2Y are known?
What elements does AgTe2Y contain?
Where does the data for AgTe2Y come from?
How It Compares
Within the phase-change memory materials class.
Within the diverse family of phase-change materials, AgTe2Y serves as a specialized alternative to more traditional binary compounds like GeTe or Ag2Te. While GeTe is widely recognized for its rapid crystallization kinetics, AgTe2Y offers a different electronic landscape by incorporating yttrium, which influences the lattice dynamics and phase transition behavior compared to simpler systems like AgTe or Sb2Te3.
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).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
- nomad — Data from NOMAD. Cite: Draxl & Scheffler, J. Phys. Mater. 2, 036001 (2019).
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