Please use this identifier to cite or link to this item:
Title: Simultaneous tuning of the dielectric property and photo-induced conductivity in ferroelectric Ba0.7Ca0.3TiO3 via la doping
Authors: Jaiban,P.
Keywords: Mechanical Engineering
Materials Science (all)
Mechanics of Materials
Condensed Matter Physics
Issue Date: 15-May-2015
Publisher: Elsevier
Abstract: © 2015 Elsevier B.V. All rights reserved. (Ba0.7Ca0.3)1-1.5xLaxTiO3 ceramics with x=0-0.03 were prepared using a solid state sintering method. All ceramics exhibit ferroelectric state at maximum temperatures, Tm, between 340 and 383 K. Upon increasing La3+ content, although the maximum temperature of permittivity becomes lower (well correlated with the decrease of tetragonallity), the dielectric response is significantly higher near room temperature for the x=0.03 sample. Furthermore, the conductivity shows clear enhancement under ultra-violet (UV) irradiation. This enhancement becomes larger upon increasing La content, which correlates with the decrease in activation energy extracted from the temperature-dependent conductivity. The results here suggest that BCT properties may be largely tunable by La doping, which could be applied with much potential use with ferroelectric devices and in optoelectronics.
ISSN: 0167577X
Appears in Collections:SCIENCE: Journal Articles

Files in This Item:
There are no files associated with this item.

Items in CMUIR are protected by copyright, with all rights reserved, unless otherwise indicated.