Lanthanum strontium titanate

Perovskites have also been widely investigated as potential SOFC anode materials. Among these materials, chromites and titanates are promising [21, 22], Interesting results have been obtained with lanthanum strontium titanates [23] and especially cerium-doped lanthanum strontium titanate [24] however, it is now thought that the cerium-doped anodes are in fact two phases consisting of a ceria-perovskite assemblage [24],... 

Highly pure lanthanum oxide is used to make optical glass of high refractive index for camera lenses. It also is used to make glass fibers. The oxide also is used to improve thermal and electrical properties of barium and strontium titanates. Other applications are in glass polishes carbon arc electrodes fluorescent type phosphors and as a diluent for nuclear fuels. In such apph-cations, lanthinum oxide is usually combined with other rare earth oxides. 

Monophosphate tungsten bronzes with pentagonal tunnels NASICON = Sodium super ionic conductor NLO = Nonlinear Optical PLZT = Lead lanthanum zirconium titanate PZT = Lead zirconium titanate SBT = Strontium Bismuth Tantalate, SrBi2Ta209 SOFC = Solid oxide fuel cell TTB = Tetragonal tungsten bronze YAG = Yttrium iron garnet 3D = Three-dimensional TEOS = Tetraethylorthosilicate. 

Additional work on dielectrics includes deposition of silica, PABS (lead aluminum boron silicates), PLZT (lead lanthanum zirconium titanate) and BST (barium strontium titanate) on Si-Ti-Pt wafers (Figure 2). The wafer specimens were patterned with metal electrodes and electronic properties were characterized. 

Gunhold, A., Goemann, K., Beuermann, L. et al. (2003) Nanostructures on lanthanum-doped strontium titanate surfaces. Anal Bioanal Chem, 375 (7), 924-928. 

Sapphire substrates, for II-Vl or III-V applications, can be found through the 100 mm range. Whereas, ZnSe, ZnTe, and GaN are found in the 1 cm range in research quantities. Efforts on ZnSe and related substrates increased with the demonstration of blue lasers in this material system. However, those efforts are foreshadowed by the blue LED and laser results in GaN. Presently there are several major research efforts underway to produce large area GaN substrates. The nitride substrate development effort also is motivated by high power, temperature and frequency device applications. For superconductors, lanthanum aluminate, strontium titanate, magnesium oxide, and other related substrates are found in the few to tens of square centimeter ranges. 

Marina OA, Canfield NL, Stevenson JW (2002) Thermal, electrical, and electrocatalytical properties of lanthanum-doped strontium titanate. Solid State Ionics 149 21... 

Moos R, Bischoff T, Menesklou W, Hardtl K (1997) Solubility of lanthanum in strontium titanate in oxygen-rich atmospheres. J Mater Sci 32 4247 252... 

Balachandran U, Eror NG (1982) Electrical conductivity in lanthanum-doped strontium titanate. J Electrochem Soc 129 1021-1026... 

Nontransparent electrodes for example, lanthanum nickelate - La2Ni04, lanthanum-doped strontium titanate - Lai (Sr , Ti03... 

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