... the presence of oxygen vacancy defects some mixed valence oxide are known such as V6O13 with V+5 and V+4 oxidized states. If the number of the oxygen vacancy defects increases above a certain value the ...
... another transformation to a new phase called N-phase. Substoichiometric phases (Magneli phases) with edge sharing octahedra are reported for tungsten oxide. These phases have the chemical formula WO3-z ...
... octahedra slightly distorted of TiO6. The anatase phase of titanium oxide has shown electrochromism: it has tetragonal symmetry and the octahedra of TiO6 shear two adjacent edge with two others octahedra ...
PZT
PZT is an intermetallic inorganic compound with the chemical formula Pb[ZrxTi1-x]O3 (0≤x≤1). It is a ceramic perovskite material that shows a marked piezoelectric effect, meaning that the compound ...
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The electrochromism was first discovered in WO3 in 1969 by Deb and since that time a huge number of papers have been published regards tungsten trioxide thin film.