File Download

There are no files associated with this item.

  • Find it @ UNIST can give you direct access to the published full text of this article. (UNISTARs only)
Related Researcher

조욱

Jo, Wook
Sustainable Functional Ceramics Lab.
Read More

Views & Downloads

Detailed Information

Cited time in webofscience Cited time in scopus
Metadata Downloads

Effects of grain size on the dielectric properties and tunabilities of sol-gel derived Ba(Zr0.2Ti0.8)O3 ceramics

Author(s)
Jo, WookKim, Tae-HyeongKim, Doh-Yeon
Issued Date
2004-07
DOI
10.1016/j.ssc.2004.05.016
URI
https://scholarworks.unist.ac.kr/handle/201301/7461
Fulltext
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=35348812509
Citation
SOLID STATE COMMUNICATIONS, v.131, no.3-4, pp.163 - 168
Abstract
Barium zirconante titanate Ba(Zr0.2Ti0.8)O3 (BZT) ceramics were prepared using a sol–gel process. The effect of grain size and dc field on the dielectric properties of BZT ceramics were investigated. The coarse-grained sample undergoes a structural phase transition, but medium- and fine-grained samples showed diffuse phase transition characteristics. As the grain size decreased, the maximum dielectric constant and the transition temperature decreased. The fine-grained sample showed a ‘relaxor-like’ ferroelectric behavior, the dielectric relaxation rate follows the Vogel–Fulcher relation with and The dielectric constant is greatly suppressed and low loss is obtained under dc electric field. At room temperature (300 K) and 20 kV/cm, the tunability (k) and loss are 82% and 0.0034 for the coarse-grained sample.
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
ISSN
0038-1098

qrcode

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