Skip to main content

Compositional Substitutions and Aliovalent Doping of BaTiO3-Based Thin Films on Nickel Foils Prepared by Chemical Solution Deposition

Buy Article:

$43.00 plus tax (Refund Policy)

Several strategies were evaluated focusing on the optimum reliability of thin-film ceramic capacitors derived from different compositions based on BaTiO3 (BT) and prepared by chemical solution deposition onto nickel foils. Film crystallization was carried out at 800°C under reducing conditions to prevent the detrimental oxidation of the metal electrode while allowing the formation of the pure perovskite phase. In a first approach, compositional modifiers were introduced into the system, yielding to Ba(Ti0.7Zr0.3)O3 (BTZ) and (Ba0.7Sr0.3)TiO3 (BST) solid solutions. Despite the lower permittivities obtained with respect to pure BT, dielectric losses and leakage current densities in these films were observed to improve. With the aim of further optimizing these features, the second approach focuses on the defect chemistry of BST films by incorporation of either donor–acceptor cations (Mn2+ and Nb5+) or single rare-earth elements (Dy3+ or Y3+“magic ions”) into the perovskite. The leakage conduction in the associated capacitors is revealed to effectively decrease in the first case, whereas doping with rare-earth cations does not substantially improve the dielectric properties of the ceramics. Processing effects related to the thin-film configuration, rather distant from the classical scenario used within the technology of multilayer bulk ceramic capacitors, also account for the final properties obtained in the films of this work.
No References
No Citations
No Supplementary Data
No Article Media
No Metrics

Document Type: Research Article

Affiliations: 1: Institut für Werkstoffe der Elektrotechnik II, RWTH Aachen, D-52074 Aachen, Germany 2: Institut für Festkörperforschung, Elektronische Materialien, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany 3: IMEC, B-3001 Leuven, Belgium 4: BASF SE, Chemicals Research and Engineering, D-67056 Ludwigshafen, Germany

Publication date: 2010-02-01

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more