The Effect of Isostatic Pressing on the Dielectric Properties of Screen Printed Ba_0.5Sr_0.5TiO₃ Thick Films

Author(s)

Siwei Wang
Lingling Zhang
Jiwei Zhai
Fanglin Chen, University of South Carolina - ColumbiaFollow

Document Type

Article

Abstract

Ba_0.5Sr_0.5TiO₃ thick films with B₂O₃–Li₂O glass sintering aid were prepared by the screen printing method on Al₂O₃ substrates. A 200 MPa isostatic pressure was applied to the films before sintering. After being sintered at 950^∘C, lower porosity and denser microstructure was obtained compared with the films without isostatic pressing. The dielectric constant and dielectric loss were 238 and 0.0028, respectively. A tunability of 61.7% was obtained for the isostatic pressed films, a 27.8% enhancement compared to unpressurized films. These results suggest that isostatic pressing is an effective way to prepare dielectric thick films with dense microstructure, low dielectric loss, and high tunability.

Publication Info

Published in Journal of Ceramics, Volume 2013, 2013, pages 852867-.

Rights

©Journal of Ceramics 2013, Hindawi Publishing Corporation.

Wang, S., Zhang, L., Zhai, J., & Chen, F. (2013). The Effect of Isostatic Pressing on the Dielectric Properties of Screen Printed Ba_0.5Sr_0.5TiO₃ Thick Films. Journal of Ceramics, 2013, #852867. http://dx.doi.org/10.1155/2013/852867