The number of electrons in each of lanthanum's shells is [2, 8, 18, 18, 9, 2] and its electron configuration is [Xe] 5d 1 6s 2. The lanthanum atom has a radius of 187 pm and a Van der Waals radius of 240 pm. Lanthanum was first discovered by Carl Mosander in 1838. In its elemental form, lanthanum has a silvery white appearance.
reduces the work function of lanthanum hexaboride: Reference 3 indi-cates a 2. 2-eV work function for cesium on lanthanum hexaboride at 1700 K without adsorptive optimization. And references 2 and 22 report a 0. 8-eV work function for lanthanum hexaboride with optimum cesiation.
A target material is required with a high melting point, electric conductivity, and thermal conductivity. Table S1 (see Supplementary materials) shows the melting point, electric conductivity, and thermal conductivity of La, La 2 O 3 (lanthanum oxide), LaB 6 (lanthanum hexaboride) and LaC 2 (lanthanum carbide) .
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Nano lanthanum hexaboride has diverse uses in traditional & high-tech industries like mechanics, electronics, aeronautics, metallurgy, chemistry, environment, etc.
** The z-ratio is unknown. Therefore, we recommend using 1.00 or an experimentally determined value. Material Notes "Indium" Bonding is recommended for these materials. Many materials have characteristics which are not amenable to sputtering, such as, brittleness and low thermal conductivity.
Lanthanum boride Lanthanum hexaboride 12008-21-8 100 *Designates that a specific chemical identity and/or percentage of composition has been withheld as a trade secret. 4. First-aid measures Inhalation Move to fresh air. Skin contact Wash off with soap and water. Get medical attention if irritation develops and persists. 1 / 6
Lanthanum hexaboride (LaB 6) is one of the best thermionic emission materials, because of its low work function and high melting point.DENKA LaB 6 Cathode has been highly reputed as an electron source for electron microscopes and electron beam lithograph apparatus.
Alibaba.com offers 375 price lanthanum oxide products. About 84% of these are rare earth & products, 10% are oxide, and 2% are other metals & metal products. A wide variety of price lanthanum oxide options are available to you, There are 373 price lanthanum oxide suppliers, mainly located in Asia.
Enhanced field emission from lanthanum hexaboride coated multiwalled carbon nanotubes: Correlation with physical properties Rajkumar Patra,1 S. Ghosh,1,a) E. Sheremet,2 Menaka Jha,3 R. D. Rodriguez,2
Lanthanum Hexaboride Nanoparticles are generally immediately available in most volumes. High purity, submicron and nanopowder forms may be considered. Additional technical, research and safety (MSDS) informationis available as is a Reference Calculator for converting relevant units of measurement.
Thermal Profile of a Lanthanum Hexaboride Heaterless Hollow Cathode IEPC-2017-291 . Presented at the 35th International Electric Propulsion Conference . Georgia Institute of Technology • Atlanta, Georgia • USA . October 8 – 12, 2017 . Alexander Daykin-Iliopoulos. 1, Igor Golosnoy 2 and Steve Gabriel 3 University of Southampton, SO17 1BJ ...
Lanthanum hexaboride LaB6 Powder is an inorganic chemical, a refractory ceramic material with a melting point 2210 °C and density 2.61g/cm3. It is insoluble in water and hydrochloric acid.
Absorption and scattering of near-infrared light by dispersed lanthanum hexaboride nanoparticles for solar control filters - Volume 25 Issue 3 - Kenji Adachi, Mitsunobu Miratsu, Tsuyoshi Asahi
This Standard Reference Material (SRM) is intended for use in calibration of diffraction line positions and line shapes determined through powder diffractometry. A unit of SRM 660c consists of approximately 6 g of lanthanum hexaboride, LaB6, powder bottled under argon gas. For more information, please refer to the COA and SDS.
Lanthanum Hexaboride (LaB6) Lanthanum hexaboride (LaB6, also called lanthanum boride and LaB6) is an inorganic chemical, a boride of lanthanum.It is a refractory ceramic material that has a melting point of 2210°C, and is insoluble in water and hydrochloric acid.
Lanthanum hexaboride powder, 10 μm, 99% Synonym: Lanthanum boride CAS Number 12008-21-8. Linear Formula LaB 6. Molecular Weight 203.77 . EC Number 234-531-6. MDL number MFCD00151350. PubChem Substance ID 24854496
Lanthanum hexaboride (LaB6) nanocrystals, with an ∼1000 nm wavelength localized surface plasmon resonance ideal for interacting with solar near-infrared radiation, have been synthesized for the first time in a relatively low temperature flask reaction using sodium borohydride as both boron source and "solvent".
The present study describes a borothermal reduction process to obtain nanostructured lanthanum hexaboride (LaB 6) particles and their films.The morphology (nanorods and nanoparticles) of the boride nanostructures could be controlled by using a lanthanum hydroxide precursor (with controlled shape and size) obtained by a microemulsion mediated process.
Nanoparticles > Nano Metal Oxide > Nano Lanthanum Oxide; Nano Lanthanum Oxide. Lanthanum Oxide Nanoparticles Features: Nano lanthanum oxide is white powder, density 6.51g/cm3, melting point 1430℃、1557℃、1620℃, slightly soluble in water, soluble in acid and generates the corresponding salts.
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High-quality, uniform, one-dimensional (1D) lanthanum hexaboride (LaB6) nanostructures with different morphologies (for example, sparse or dense nanoneedles, or nanorods and nanowire arrays) were ...
Applied Physics Lanthanum and Cerium Hexaboride (LaB 6 and CeB 6) Filaments / Cathodes. Submit a follow up request. Building the World's Best Cathodes . Lanthanum hexaboride (LaB 6) and cerium hexaboride (CeB 6) cathodes are ideal for many small spot size applications such as SEM, TEM, surface analysis and metrology, and for high current applications such as microwave tubes, lithography ...
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Lanthanum hexaboride (La B 6, also called lanthanum boride and LaB) is an inorganic chemical, a boride of lanthanum. It is a refractory ceramic material that has a melting point of 2210 °C, and is insoluble in water and hydrochloric acid. It has a low work function and one of the highest electron emissivities known, and is stable in vacuum.
The Kimball Physics ES-423E (Extended Life) Lanthanum Hexaboride Cathode is a high performance, resistively heated, thermionic electron source. It is currently used in many electron optical systems: SEM's, TEM's, microprobes, electron lithography systems, etc.
The use of lanthanum hexaboride is very wide. It has been successfully applied in radar aerospace, electronics industry, instrumentation, medical equipment, home appliances, metallurgy, environmental protection and over twenty other military and high-tech fields. Its products mainly include three kinds of powder, polycrystalline and single crystal.
Lanthanum Hexaboride Nanoobelisks ... A simple catalysis-free approach that utilises a gas–solid reaction for the synthesis of large-scale single-crystalline PrB6 nanorods using Pr and BCl3 as ...
Kimball Physics Lanthanum Hexaboride (LaB 6) Filaments / Cathodes Featuring. Extended Life – Thousands of Hours in Clean Vacuum. Guaranteed Life (Measured in Surface Loss). Guaranteed Against Mounting Structure Fail
Uniform Dispersion of Lanthanum Hexaboride Nanoparticles in a Silica Thin Film: Synthesis and Optical Properties Article in ACS Applied Materials & Interfaces 4(11) · October 2012 with 166 Reads
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