lanthanum oxide


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lanthanum oxide

[′lan·thə·nəm ′äk‚sīd]
(inorganic chemistry)
La2O3 A white powder melting at about 2000°C; soluble in acid, insoluble in water; used to replace lime in calcium lights and in optical glass. Also known as lanthana; lanthanum sesquioxide; lanthanum trioxide.
References in periodicals archive ?
In the present study, we synthesize stoichiometric lanthanum lithium niobate ([La.sub.0.05][Li.sub.0.85]Nb[O.sub.3]) and lithium niobate (LiNb[O.sub.3]) by using lithium carbonate ([Li.sub.2]C[O.sub.3]), niobium oxide ([Nb.sub.2][O.sub.5]), and lanthanum oxide ([La.sub.2][O.sub.3]) as precursors.
Gunn^s, "XPS characterisation of in situ treated lanthanum oxide and hydroxide using tailored charge referencing and peak fitting procedures," Journal of Electron Spectroscopy and Related Phenomena, vol.
It can be supposed that the as-grown film consists mainly of amorphous lanthanum oxide but it may also be partially carbonated to form a [La.sub.x][O.sub.y][(C[O.sub.3]).sub.z] type nonstoichiometric amorphous phase.
Lanthanum oxide on the other hand has a band gap value of 4.3 eV and a hexagonal crystal structure and is used in various fields such as in optoelectronic devices and as dopant in camera glass lens to enhance sharpness and to improve clarity of the image.
Kong, "Removal and recovery of phosphate from water by activated aluminum oxide and lanthanum oxide," Powder Technology, vol.
The highest energy contribution is assigned to the bonding between lanthanum and zinc while the lowest energy contribution is attributed to the bonding in the lanthanum oxide clusters (Anandan et al., 2007).
In addition, no diffraction peaks corresponding to lanthanum and/or lanthanum oxide were present.
Lanthanum and cerium will be removed from the rare earth chloride solution using solvent extraction to produce four different rare earth products: lanthanum oxide, 99% grade; cerium hydroxide, 99% grade; mixed lanthanum and cerium oxide, 99% grade; and mixed praseodymium and lutetium oxide.
Lanthanum oxide nanoparticles have been used in the production of the hybrid materials due to their high dielectric constant while anthracene was used due to its very cheap price and good availability.