NaSbTe2
NaSbTe2 is a stable, semiconducting telluride compound studied for its potential applications in non-volatile phase-change memory technologies.
About NaSbTe2
NaSbTe2 is a semiconducting ternary telluride that resides on the thermodynamic convex hull, indicating high structural stability. As a member of the phase-change material family, it is primarily investigated for its potential to undergo reversible transitions between amorphous and crystalline states, which is the fundamental mechanism for data storage in non-volatile memory devices.
The compound is characterized by its distinct electronic structure, which makes it a subject of interest for researchers optimizing switching performance and thermal stability in electronic components. Its inclusion in the phase-change class highlights its role in the ongoing search for materials that can replace or augment current memory technologies through efficient, high-speed phase transitions.
Key Properties
Cross-validated computational properties for NaSbTe2, aggregated across 4 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 NaSbTe2. 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 NaSbTe2, 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. |
|---|---|---|---|---|---|
| — | — | 0.89 | 0.0000 | -0.489 | — |
| R-3m (No. 166) | trigonal | 0.80 | 0.0000 | -0.487 | — |
| R-3m (No. 166) | trigonal | 0.66 | 0.0000 | -3.589 | 5.24 |
| P4/mmm (No. 123) | tetragonal | 0.00 | 0.0748 | -3.514 | 5.41 |
| P4/mmm (No. 123) | tetragonal | 0.00 | 0.0760 | -0.411 | — |
| — | — | 0.00 | 0.2908 | -0.199 | — |
| Fm-3m (No. 225) | cubic | — | — | — | 5.27 |
Applications
Where NaSbTe2 is used.
Frequently Asked Questions
Common questions about NaSbTe2, answered from cross-validated data.
What is NaSbTe2?
NaSbTe2 is a stable, semiconducting telluride compound studied for its potential applications in non-volatile phase-change memory technologies.
What is NaSbTe2 used for?
What is the band gap of NaSbTe2?
Is NaSbTe2 a metal, semiconductor, or insulator?
Is NaSbTe2 thermodynamically stable?
What is the crystal structure of NaSbTe2?
What is the density of NaSbTe2?
How many polymorphs of NaSbTe2 are known?
What elements does NaSbTe2 contain?
Where does the data for NaSbTe2 come from?
How It Compares
Within the phase-change memory materials class.
Within the diverse group of phase-change materials, NaSbTe2 occupies a unique position alongside established compounds like Ge2Sb2Te5 and AgSbTe2. While Ge2Sb2Te5 remains the industry standard for its rapid switching kinetics, NaSbTe2 offers a different chemical landscape that researchers utilize to explore alternative pathways for achieving stable, low-power memory states in complex telluride systems.
Related Compounds
Other Phase-Change Memory Materials in the database.
Data sources & attribution
- oqmd — Data from the OQMD (oqmd.org). Cite: Saal et al., JOM 65, 1501 (2013); Kirklin et al., npj Comp. Mater. 1, 15010 (2015). (CC-BY-4.0)
- jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
- materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
- cod — Data from the Crystallography Open Database (crystallography.net/cod/). Cite: Grazulis et al., J. Appl. Cryst. 42, 726 (2009). (CC0-1.0)
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