Chemistry:Lithium tantalate
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| Names | |
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| IUPAC name
Lithium tantalate
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| Other names
Lithium metatantalate
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| Identifiers | |
3D model (JSmol)
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PubChem CID
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| Properties | |
| LiO3Ta | |
| Molar mass | 235.88 g·mol−1 |
| Density | 7.46 g/cm3, solid |
| Melting point | 1,650 °C (3,000 °F; 1,920 K) |
| Insoluble in water | |
| Structure | |
| Space group R3c | |
a = 515.43 pm, c = 1378.35 pm[1]
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| Hazards | |
| Main hazards | Acute Toxicity: Oral, Inhalation, Dermal |
| Safety data sheet | [2] |
| Related compounds | |
Other anions
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LiNbO3 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
 verify (what is   ?)
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| Infobox references | |
Lithium tantalate is the inorganic compound with the formula LiTaO3. It is a white, diamagnetic, water-insoluble solid. The compound has the perovskite structure. It has optical, piezoelectric, and pyroelectric properties. Considerable information is available from commercial sources about this material.[3]
Synthesis and processing
Lithium tantalate is produced by treating tantalum(V) oxide with lithium oxide. The use of excess alkali gives water-soluble polyoxotantalates. Single crystals of Lithium tantalate are pulled from the melt using the Czochralski method.[3]
Applications
Lithium tantalate is used for nonlinear optics, passive infrared sensors such as motion detectors, terahertz generation and detection, surface acoustic wave applications, cell phones. Lithium tantalate is a standard detector element in infrared spectrophotometers.[4]
Research
The phenomenon of pyroelectric fusion has been demonstrated using a lithium tantalate crystal producing a large enough charge to generate and accelerate a beam of deuterium nuclei into a deuterated target resulting in the production of a small flux of helium-3 and neutrons through nuclear fusion without extreme heat or pressure.[5]
A difference between positively and negatively charged parts of pyroelectric LiTaO3 crystals was observed when water freezes to them.[6]
See also
- Lithium tantalate (data page)
References
- ↑ Abrahams, S.C; Bernstein, J.L (1967). "Ferroelectric lithium tantalate—1. Single crystal X-ray diffraction study at 24°C". Journal of Physics and Chemistry of Solids 28 (9): 1685. doi:10.1016/0022-3697(67)90142-4. Bibcode: 1967JPCS...28.1685A.
- ↑ "Lithium Tantalate". SDS Manager. https://discovery.sdsmanager.com/safety-data-sheet/english/sigma-aldrich-inc-lithium-tantalate-en/.
- ↑ 3.0 3.1 Andersson, Klaus; Reichert, Karlheinz; Wolf, Rüdiger (2000). "Tantalum and Tantalum Compounds". Ullmann's Encyclopedia of Industrial Chemistry. doi:10.1002/14356007.a26_071. ISBN 3-527-30673-0.
- ↑ "Application note: Infrared Spectroscopy". https://www.s4science.at/wordpress/wp-content/uploads/2020/04/LiTaO3-Detector_Technical-Note.pdf.
- ↑ B. Naranjo, J.K. Gimzewski; S. Putterman (2005). "Observation of nuclear fusion driven by a pyroelectric crystal". Nature 434 (7037): 1115–1117. doi:10.1038/nature03575. PMID 15858570. Bibcode: 2005Natur.434.1115N.
- ↑ D. Ehre; E. Lavert; M. Lahav; I. Lubomirsky (2010). "Water Freezes Differently on Positively and Negatively Charged Surfaces of Pyroelectric Materials". Science 327 (5966): 672–675. doi:10.1126/science.1178085. PMID 20133568. Bibcode: 2010Sci...327..672E.
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