Local structure and dielectric behavior of tetragonal tungsten bronzes beta-SrTa2O6 and beta '-SrTa2O6

Title
Local structure and dielectric behavior of tetragonal tungsten bronzes beta-SrTa2O6 and beta '-SrTa2O6
Author(s)
김영일김주영
Keywords
SRTA2O6 THIN-FILMS; ATOMIC LAYER DEPOSITION
Issue Date
201505
Publisher
CERAMIC SOC JAPAN-NIPPON SERAMIKKUSU KYOKAI
Citation
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN, v.123, no.1437, pp.419 - 422
Abstract
The dielectric properties of polymorphic tungsten-bronzes, beta-SrTa2O6 and beta'-SrTa2O6, were measured using phase pure ceramic specimens. The room temperature dielectric constant (kappa) of beta-SrTa2O6 and beta'-SrTa2O6 were approximate to 26 and approximate to 104, respectively, which were relatively constant over the ac frequency range, 10(2)-10(6) Hz. The markedly distinct kappa of beta- and beta'-SrTa2O6 were attributed to local structural details, where the displacive Sr disorder in beta'-SrTa2O6 was emphasized. Both beta- and beta'-SrTa2O6 exhibited a temperature dependent transition of kappa with diffuse maxima at 40-80 K. (C) 2015 The Ceramic Society of Japan. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/32316http://dx.doi.org/10.2109/jcersj2.123.419
ISSN
1882-0743
Appears in Collections:
이과대학 > 화학생화학부 > Articles
문과대학 > 중국언어문화학과 > Articles
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