Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Superstructures Based on Oxygen Ordering

In some oxides, formation of superstructures is merely due to oxygen ordering. A good example was demonstrated by Reller and coworkers in 1984, by showing many distinct superstructures in perovskite-type oxides CaMn03, t with oxygen contents of 2.5, 2.556, 2.667, 2.75 and 2.80 [38]. [Pg.459]

An incommensurate superstructure is a superstructure derived from a basic structure without a proportional relation of dimensions to the basic unit cell. This type of superstructure is often found in mixed oxides. A good example is Bi203-based solid solutions. [Pg.460]

Some incommensurate superstructures are developed from lattice distortion instead of partial ordering of cations. One example is the superconducting oxide Bi2+)tSr2Cai jtCu20g, 6 [43, 44]. [Pg.462]


See other pages where Superstructures Based on Oxygen Ordering is mentioned: [Pg.459]   


SEARCH



Oxygen bases

Oxygen superstructure

Superstructure

© 2024 chempedia.info