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 | |
PubChem CID
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| RTECS number |
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| Properties | |
| LiTaO3 | |
| Molar mass | 235.887 g/mol |
| 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 | http://www.samaterials.com/pdf/Lithium-Tantalate-Wafers-(LiTaO3-Wafers)-sds.pdf |
| 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). | |
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| Infobox references | |
Lithium tantalate is the inorganic compound with the formula LiTaO3. It is a white, diamagnetic, water-insoluble salt. The compound has the perovskite structure. It has optical, piezoelectric, and pyroelectric properties that make it valuable for nonlinear optics, passive infrared sensors such as motion detectors, terahertz generation and detection, surface acoustic wave applications, cell phones. Considerable information is available from commercial sources about this material.
Applications and research
Lithium tantalate is a standard detector element in infrared spectrophotometers.[2]
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.[3]
The phenomenon of freezing water to ice, depending on the charge applied to a surface of pyroelectric LiTaO3 crystals.[4]
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.
- ↑ "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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