Fe4Sb4Te4
Fe4Sb4Te4 is a stable, semiconducting telluride compound investigated for its potential utility in phase-change memory applications.
About Fe4Sb4Te4
Fe4Sb4Te4 is a semiconducting compound within the phase-change memory material class. As a thermodynamically stable phase, it occupies a significant position on the convex hull, indicating robust structural integrity that is essential for reliable data storage applications.
Its unique electronic character allows it to transition between structural states, a fundamental requirement for non-volatile memory technologies. The compound's stability makes it a compelling subject for researchers investigating next-generation electronic components that require long-term data retention.
Key Properties
Cross-validated computational properties for Fe4Sb4Te4, 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 Fe4Sb4Te4, 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. |
|---|---|---|---|---|---|
| P21/c (No. 14) | monoclinic | 0.30 | 0.0000 | -5.587 | 8.15 |
| P2/m (No. 10) | monoclinic | 0.00 | 0.0456 | -5.541 | 7.98 |
| — | — | — | — | — | 7.06 |
| P21/c (No. 14) | — | — | — | — | — |
Applications
Where Fe4Sb4Te4 is used.
Frequently Asked Questions
Common questions about Fe4Sb4Te4, answered from cross-validated data.
What is Fe4Sb4Te4?
Fe4Sb4Te4 is a stable, semiconducting telluride compound investigated for its potential utility in phase-change memory applications.
What is Fe4Sb4Te4 used for?
What is the band gap of Fe4Sb4Te4?
Is Fe4Sb4Te4 a metal, semiconductor, or insulator?
Is Fe4Sb4Te4 thermodynamically stable?
What is the crystal structure of Fe4Sb4Te4?
What is the density of Fe4Sb4Te4?
How many polymorphs of Fe4Sb4Te4 are known?
What elements does Fe4Sb4Te4 contain?
Where does the data for Fe4Sb4Te4 come from?
How It Compares
Within the phase-change memory materials class.
While industry standards like Ge2Sb2Te5 are widely utilized for their rapid switching kinetics, Fe4Sb4Te4 offers a distinct structural profile as a thermodynamically stable member of the telluride-based memory class, distinguishing it from more volatile or metastable counterparts like Ag2Te.
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).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
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