AC conductivity and dielectric properties of (Bi,Na)TiO3-BaTiO3 lead free ceramics
- Authors
- Kang, Woo-Seok; Lee, Sang-Kwon; Koh, Jung-Hyuk
- Issue Date
- Jun-2015
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Dielectric properties; Electrical conductivity; Lead free; Piezoelectric; X-ray diffraction
- Citation
- CERAMICS INTERNATIONAL, v.41, no.5, pp 6925 - 6932
- Pages
- 8
- Journal Title
- CERAMICS INTERNATIONAL
- Volume
- 41
- Number
- 5
- Start Page
- 6925
- End Page
- 6932
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/9461
- DOI
- 10.1016/j.ceramint.2015.01.147
- ISSN
- 0272-8842
1873-3956
- Abstract
- (Bi,Na)TiO3 (BNT) based ceramics have been extensively investigated for electronic device applications. BNT is ferroelectric material with ABO(3) perovskite structure. BNT ceramics have high Curie temperature (T-c = 320 degrees C) and remanent polarization (P-r=38 mu C/cm(2)). Despite its relatively high coercive field (E-c=7.3 kV/mm) and low piezoelectric constant (d(33)=83 pC/N). Temperature and frequency dependent relative dielectric permittivity and loss tangent can play an important role in the device performance. To analyze the dielectric characteristics across wide temperature (303-403 K) and frequency range (1 kHz to 3 MHz), AC conductivities of (1-x)(Bi0.5Na0.5TiO3)-x(BaTiO3) (x=0, 0.02, 0.04, 0.06, 0.08, or 0.10) were measured and analyzed. The conduction mechanism was evaluated through simulations and calculations based on an Arrhenius-type equation. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Natural Sciences > Department of Physics > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.