Low-Temperature Sputtering Deposition of Aligned Polycrystalline CaCu3Ti4O12 Nanorods


  • R. Jiminez—contributing editor

  • This work was financially supported by the Brazilian research funding agencies FAPESP and CNPq.

†Author to whom correspondence should be addressed. e-mail: raluk1978@yahoo.com


Vertically aligned polycrystalline CaCu3Ti4O12 nanorods were obtained by rf sputtering at low substrate temperatures. The rods grow by electrostatic attraction and aggregation of charged clusters, independently of the substrate used. These nanostructures exhibit a strong nonlinear current × voltage behavior and high losses during cyclic testing, indicating a combination of Schottky's barrier and Joule's heating effects.