Abstract :
Electroluminescence from the surface layer of barium titanate has been observed at the National Bureau of Standards (NBS) and is now being used as a tool to study the material itself. The light emission, which is extremely low in both intensity and efficiency, occurs when an r-f voltage is applied to the BaTiO3 sample. Data obtained from the emitted light have led to an understanding of the mechanism by which the light is generated. This, in turn, provides knowledge about the unusual surface layer of barium titanate.
