BaTiO3/(La,Sr)2CuO4 multilayered films are epitaxially grown on  SrTiO3 single crystals, X-ray diffractometry shows that the BaTiO3 layer is a mixture of a- and c-axis-oriented regions. The current-voltage characteristics of the films are measured between RT and 150°C, and the temperature (T) dependence of the conductivity σ of the films is deduced. The as-grown films show mostly activation-type T-dependence of σ but exhibit an abrupt change typically once of twenty times. When the films are post-annealed, the films constantly exhibit anomalous abrupt changes in the T-dependence of σ.
|Number of pages||4|
|Journal||Journal of the Korean Physical Society|
|Publication status||Published - Jan 1 2005|
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)