Paper Title:
Ferroelectric and Dielectric Aging Effects of Fe3+/Nb5+ Hybrid-Doped Barium Titanate Ceramics
  Abstract

It is well known that acceptor and donor doping results in opposite ferroelectric aging effects; however, the aging effects in hybrid-doped (acceptor+donor) has remained unclear. Thus, the aging effect of dielectric and ferroelectric properties in Fe3+/Nb5+ hybrid-doped BaTiO3 ceramics was investigated in this research. The concentration of acceptor dopant (Fe3+) was fixed at 1 mol% while that of donor dopant (Nb5+) was varied from 0.5-2.0 mol%. XRD technique was used to study the phase morphology. Before measuring dielectric and ferroelectric aging effect, all samples were deaged at 250 °C for 1 hour. The results showed that the dielectric properties of all deaged samples have decreased exponentially with time. The deaged samples with 0.5 and 1.0 mol% of Nb5+ obviously showed double hysteresis loop while that with higher concentration of Nb5+ (1.5-2.0 mol%) showed the rectangular (normal) hysteresis loop. The explanations based on the effect of defect dipole were discussed.

  Info
Periodical
Advanced Materials Research (Volumes 55-57)
Main Theme
Edited by
Tawee Tunkasiri
Pages
233-236
DOI
10.4028/www.scientific.net/AMR.55-57.233
Citation
S. Prasertpalichat, M. Unruan, J. Tungsritrakul , R. Yimnirun, "Ferroelectric and Dielectric Aging Effects of Fe3+/Nb5+ Hybrid-Doped Barium Titanate Ceramics", Advanced Materials Research, Vols. 55-57, pp. 233-236, 2008
Online since
August 2008
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Z. Zhang, L. Lu, P. Wu, C. Shu
Abstract:This paper reviews our systematic and exhaustive studies on the lead zirconate titanate doped with dopants using ab initio density...
53
Authors: Eon Jong Lee, Byeong Woo Lee
Chapter 4: Non-Metals and Building Materials
Abstract:The effects of the complex donor and acceptor additives on the microstructure, piezoelectric and dielectric properties of PZT (Zr/Ti=53/47)...
259