Lanthanum niobate

The cathodic incorporation of lithium from a solution of LiAsFg in propylene carbonate was used in the attempt [301] to obtain HTSC materials based on calcium and lanthanum niobates. The incorporation of lithium into YBCO from a similar electrolyte proceeds reversibly and ensures a discharging capacitance of the HTSC cathode high enough for application in lithium batteries [302-307]. The possibility was also reported [308-310] of incorporating lithium into BSCCO, but the capacitance values obtained are very contradictory. 

T. Shimura, Y. Tokiwa, H. Iwahara, Protonic conduction in lanthanum strontium aluminate and lanthanum niobate-based oxides at elevated temperatures. Solid State Ionics 154-155, 653-658 (2002)... 

In addition to the foregoing, more or less impure niobates of beryllium, cerium, lanthanum and nickel have been prepared.12... 

Pyro-dad. Trade-name. A process for depositing multilayer coatings of metals and ceramics. (Aremco Products Inc. USA). Pyroelectric Materials. Pyroelectrics develop an observable spontaneous electric moment only when heated. Cf ferroelectrics. Pyroelectric ceramics include some niobate-zirconate systems, barium titanate modified with zirconia and hafnia, and lanthanum-modified lead... 

Another class of ferroelectrics is the perovskites such as the titanates (BaTiOs, PbTiOs, SrTiOs, CaTiOs), the niobates (KNbOs, NaNbOs), the ilmentites, (LiNbOs, LiTaOs)), the ternary lead zirconate titanate (PZT), and the quaternary lead lanthanum zirconate titanate (PLZT). These materials undergo a displacive-type phase transformation at their Curie temperature. 

Strontium cobalt ferrites are good mixed conductors but are more suitable to be used as cathodes due to their p-type conduction. Pervoskite gaUates/niobates/barium cerate and chromium-doped lanthanum-strontium ferrite have also been studied as the anode material. Although the gaUates and niobates exhibit low conductivity, they exhibit good compatibihty with the LSGM electrolytes. The conductivity of yttrium-doped barium cerates increases by increasing yttrium content. For barium cerates, the increase in electronic conduction due to the reduction of cerium at low... 

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