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Article: New ceramics findings from J.F. Fernandez and co-authors described.
- Article from:
- Journal of Technology
- Article date:
- November 3, 2009
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According to a study from Madrid, Spain, "Fe3+ - or Nb5+-doped CaCu3Ti4O12 (CCTO) ceramics show higher values of both room-temperature (RT) grain conductivity and dielectric constant than undoped ceramics. Microstructural and structural characterization combined with magnetic properties reveal the coexistence of two components that seem relevant for the dielectric behavior of the material."
"The grain possesses a nanostructure characterized by layered domains with thicknesses
The researchers concluded: "Below 150 K, the increase of the paramagnetic-like contribution is correlated with the low transition temperature of the CCTO."
Fernandez and colleagues ...