Niobates

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Niobates

 

columbates, salts of niobic acids. The main niobates include metaniobates, MeNbO3; orthoniobates, Me3NbO4; and salts of the type Me5NbO5 (where Me is an alkali metal). Niobates are prepared by fusion of Nb2O5 with the oxides of other metals or by treating niobium hydroxide with alkaline solutions. They are used in the manufacture of electric capacitors and piezoelectric transducers. Complex natural niobates also exist.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
The above hypothesis is rarely investigated in niobates, which is one kind of photocatalyst for water splitting and organic degradation, such as NaNb[O.sub.3], Sr[Nb.sub.2][O.sub.6], and [Cs.sub.2][Nb.sub.4][O.sub.11] [8-15].
Pechini, "Method of preparing lead and alkaline titanates and niobates and coating method using the same to form a capacitor," US Patent 3330697, 1967.
Synthesis and dielectric properties of modified solid solutions of sodium-potassium niobates. Fizika Tverdogo Tela, 2012, 54, 934-936 (in Russian, English translation in Physics of the Solid State, 2012, 54, 994-996).
Pechini, Method of preparing lead and alkaline earth titanates and niobates and coating method using the same to form a capacitor, US Patent, 1967.
These barium niobates may be used to function as sensors, actuators, detectors, filters, resonators, and so forth through special layout arrangements.
Pullar, "The synthesis, properties, and applications of columbite niobates ([M.sup.2+][Nb.sub.2][O.sub.6]): a critical review," Journal of the American Ceramic Society, vol.
Simply stated, layered oxides are any oxygen-containing layered material such as, cuprates, titanates, phosphonates, niobates, or silicates.
These methods can be also extended to other layered oxide systems, such as layered niobates and titanates, (H|Ca.sub.2~|Nb.sub.3~|O.sub.20~, |Na.sub.2~|Ti.sub.3~|O.sub.7~, |Na.sub.2~|Ti.sub.4~|O.sub.9~ and other conductive polymers such as polyaniline and polypyrrole.
Nam, "Neutron diffraction and FT-Raman study of ion-exchangeable layered titanates and niobates," Chemistry of Materials, vol.
Alkali niobates have gained scientific and technological interest due to their properties as a piezoelectric, nontoxic, pyroelectric, photocatalytic material among others, and their wide range of possible applications [1, 2].