In2Te5
In2Te5 is a stable, semiconducting indium telluride compound utilized in the study and development of phase-change memory technologies.
About In2Te5
In2Te5 is a semiconducting compound within the phase-change memory material class. As a thermodynamically stable phase on the convex hull, it represents a robust structural configuration that is highly relevant for research into reversible state-switching technologies.
This material is of significant interest for its potential in next-generation electronic memory devices. Its ability to maintain structural integrity while facilitating electronic transitions makes it a compelling candidate for high-density, non-volatile data storage applications.
Key Properties
Cross-validated computational properties for In2Te5, aggregated across 5 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 In2Te5. 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 In2Te5, 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. |
|---|---|---|---|---|---|
| C2/c (No. 15) | monoclinic | 1.11 | 0.0000 | -24.934 | 5.55 |
| — | — | 0.91 | 0.0000 | -0.232 | — |
| Cc (No. 9) | monoclinic | 0.73 | 0.0000 | -0.209 | — |
| Cc (No. 9) | monoclinic | 0.84 | 0.0012 | -24.932 | 5.56 |
| — | — | — | 0.0130 | -0.219 | — |
| Cc (No. 9) | monoclinic | — | — | — | 5.65 |
| Cc (No. 9) | monoclinic | — | — | — | 5.61 |
| Cc (No. 9) | monoclinic | — | — | — | 5.46 |
| C2/c (No. 15) | monoclinic | — | — | — | 5.85 |
Applications
Where In2Te5 is used.
Frequently Asked Questions
Common questions about In2Te5, answered from cross-validated data.
What is In2Te5?
In2Te5 is a stable, semiconducting indium telluride compound utilized in the study and development of phase-change memory technologies.
What is In2Te5 used for?
What is the band gap of In2Te5?
Is In2Te5 a metal, semiconductor, or insulator?
Is In2Te5 thermodynamically stable?
What is the crystal structure of In2Te5?
What is the density of In2Te5?
How many polymorphs of In2Te5 are known?
What elements does In2Te5 contain?
Where does the data for In2Te5 come from?
How It Compares
Within the phase-change memory materials class.
Within the diverse family of phase-change materials, In2Te5 occupies a distinct niche compared to more traditional binary systems like GeTe or Sb2Te3. While many chalcogenide siblings are widely utilized for their rapid crystallization kinetics, In2Te5 provides a unique structural alternative that contributes to the broader understanding of stoichiometry-dependent phase transitions in indium-telluride systems.
Related Compounds
Other Phase-Change Memory Materials in the database.
Data sources & attribution
- materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
- 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)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
- 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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