Abstract

GHENO, S. M.; PAULIN F., P. I.  and  MORELLI, M. R.. Potential barrier behavior in BiCuVOX materials. Cerâmica [online]. 2011, vol.57, n.344, pp. 428-430. ISSN 0366-6913.  http://dx.doi.org/10.1590/S0366-69132011000400009.

The BiMeVOX materials appear being high attractive for applications at low temperatures when the ionic conductivity is the determining parameter. The occurrence of many types substitution was confirmed for numerous Me ions, but the greatest interest have been focused on the BiCuVOX materials. The objective of this study was to image the potential barriers in BiCuVOX. The sample was sintered for 4 h at 750 °C and the results show that the high density compound can be obtained. Simultaneously, topography and electric force microscopy (EFM) images are viewed side-by-side. EFM experiments were performed and the results show the maps of the electric field distribution on the surface of BiCuVOX. The formation of potential barrier was observed and the width and intensity were measured.

Keywords : BiCuVOx; EFM; potential barrier.