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Type: 
Journal
Description: 
Nanoscale imaging of the electrical properties of CaCu3Ti4O12 ceramics has been performed using scanning impedance microscopy. Two kinds of electrical inhomogeneity are detected, namely, depletion layers at grain boundaries and calcium titanate inclusions, both of which are more resistive than the bulk of the grains. Energy filtered transmission electron microscopy was used to estimate the chemical composition of the inclusions.
Publisher: 
AIP
Publication date: 
5 May 2008
Authors: 

Patrick Fiorenza, Raffaella Lo Nigro, Corrado Bongiorno, Vito Raineri, Matthew C Ferarrelli, Derek C Sinclair, Anthony R West

Biblio References: 
Volume: 92 Issue: 18 Pages: 182907
Origin: 
Applied Physics Letters