KTeO4
KTeO4 is a metastable semiconducting potassium tellurate compound used primarily in fundamental materials science research.
About KTeO4
KTeO4 is a complex potassium tellurate that exhibits semiconducting electronic behavior. As a metastable phase, it represents a unique structural configuration within the broader family of tellurium-based oxides, offering researchers a distinct platform for studying phase transitions and chemical reactivity.
Its significance lies in its specific atomic arrangement, which distinguishes it from more common, stable tellurates. By investigating this metastable material, scientists can better understand the pathways for synthesizing novel inorganic compounds with tailored electronic properties for specialized applications.
Key Properties
Cross-validated computational properties for KTeO4, 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 KTeO4, 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 | 0.53 | 0.0484 | -5.466 | 3.90 |
| P21/c (No. 14) | monoclinic | 0.54 | 0.0496 | -5.465 | 3.97 |
| P21/c (No. 14) | monoclinic | 0.63 | 0.3478 | -5.166 | 3.33 |
| P21/c (No. 14) | monoclinic | 0.51 | 0.3618 | -5.152 | 3.16 |
| P21/c (No. 14) | Monoclinic | — | — | — | 3.97 |
| C2/c (No. 15) | Monoclinic | — | — | — | 4.23 |
| C2/c (No. 15) | Monoclinic | — | — | — | 3.90 |
| C2/c (No. 15) | Monoclinic | — | — | — | 4.04 |
| P21/c (No. 14) | Monoclinic | — | — | — | 4.10 |
| P21/c (No. 14) | Monoclinic | — | — | — | 4.25 |
| C2/c (No. 15) | — | — | — | — | — |
Applications
Where KTeO4 is used.
Frequently Asked Questions
Common questions about KTeO4, answered from cross-validated data.
What is KTeO4?
KTeO4 is a metastable semiconducting potassium tellurate compound used primarily in fundamental materials science research.
What is KTeO4 used for?
What is the band gap of KTeO4?
Is KTeO4 a metal, semiconductor, or insulator?
Is KTeO4 thermodynamically stable?
What is the crystal structure of KTeO4?
What is the density of KTeO4?
How many polymorphs of KTeO4 are known?
What elements does KTeO4 contain?
Where does the data for KTeO4 come from?
How It Compares
As a metastable semiconducting phase, KTeO4 serves as a specialized example of potassium-based tellurates. While many tellurates are characterized by high thermodynamic stability, this compound occupies a more precarious energy state, making it a valuable subject for studying the kinetics of structural formation and the limits of material synthesis in the tellurate class.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- mpaloe — Data from mpaloe.
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
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