Effects of dysprosium oxide addition in bismuth sodium titanate ceramics

This research focuses on the preparation and characterization of dysprosium-doped bismuth sodium titanate (BNT) ceramics. The compounds were prepared using the conventional mixed-oxide method. The amount of dysprosium oxide used was varied from 0 to 2 at.%. The mixed powders were calcined at 800 °C...

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Main Authors: Watcharapasorn A., Jiansirisomboon S., Tunkasiri T.
Format: Article
Language:English
Published: 2014
Online Access:http://www.scopus.com/inward/record.url?eid=2-s2.0-67651092361&partnerID=40&md5=bea2e770752ef0889a4af9306364de56
http://cmuir.cmu.ac.th/handle/6653943832/5432
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Institution: Chiang Mai University
Language: English
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spelling th-cmuir.6653943832-54322014-08-30T02:56:31Z Effects of dysprosium oxide addition in bismuth sodium titanate ceramics Watcharapasorn A. Jiansirisomboon S. Tunkasiri T. This research focuses on the preparation and characterization of dysprosium-doped bismuth sodium titanate (BNT) ceramics. The compounds were prepared using the conventional mixed-oxide method. The amount of dysprosium oxide used was varied from 0 to 2 at.%. The mixed powders were calcined at 800 °C and checked for phase purity using X-ray diffraction technique. The powders were then cold-pressed into small pellets which were subsequently sintered at 1050 °C for 2 h. The results from density measurement and SEM micrographs showed that highly dense and high-purity ceramics were obtained. The grain size of Dy-doped samples was found to decrease with increasing Dy content. Compared to pure BNT, the addition of Dy2O3 in BNT ceramics slightly increased the dielectric constant values near room temperature. In addition, the Dy doping resulted in a more diffused transition temperature, less frequency dependence of the dielectric constant and very low values of the dielectric loss. © 2007 Springer Science+Business Media, LLC. 2014-08-30T02:56:31Z 2014-08-30T02:56:31Z 2008 Article 13853449 10.1007/s10832-007-9280-6 JOELF http://www.scopus.com/inward/record.url?eid=2-s2.0-67651092361&partnerID=40&md5=bea2e770752ef0889a4af9306364de56 http://cmuir.cmu.ac.th/handle/6653943832/5432 English
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
language English
description This research focuses on the preparation and characterization of dysprosium-doped bismuth sodium titanate (BNT) ceramics. The compounds were prepared using the conventional mixed-oxide method. The amount of dysprosium oxide used was varied from 0 to 2 at.%. The mixed powders were calcined at 800 °C and checked for phase purity using X-ray diffraction technique. The powders were then cold-pressed into small pellets which were subsequently sintered at 1050 °C for 2 h. The results from density measurement and SEM micrographs showed that highly dense and high-purity ceramics were obtained. The grain size of Dy-doped samples was found to decrease with increasing Dy content. Compared to pure BNT, the addition of Dy2O3 in BNT ceramics slightly increased the dielectric constant values near room temperature. In addition, the Dy doping resulted in a more diffused transition temperature, less frequency dependence of the dielectric constant and very low values of the dielectric loss. © 2007 Springer Science+Business Media, LLC.
format Article
author Watcharapasorn A.
Jiansirisomboon S.
Tunkasiri T.
spellingShingle Watcharapasorn A.
Jiansirisomboon S.
Tunkasiri T.
Effects of dysprosium oxide addition in bismuth sodium titanate ceramics
author_facet Watcharapasorn A.
Jiansirisomboon S.
Tunkasiri T.
author_sort Watcharapasorn A.
title Effects of dysprosium oxide addition in bismuth sodium titanate ceramics
title_short Effects of dysprosium oxide addition in bismuth sodium titanate ceramics
title_full Effects of dysprosium oxide addition in bismuth sodium titanate ceramics
title_fullStr Effects of dysprosium oxide addition in bismuth sodium titanate ceramics
title_full_unstemmed Effects of dysprosium oxide addition in bismuth sodium titanate ceramics
title_sort effects of dysprosium oxide addition in bismuth sodium titanate ceramics
publishDate 2014
url http://www.scopus.com/inward/record.url?eid=2-s2.0-67651092361&partnerID=40&md5=bea2e770752ef0889a4af9306364de56
http://cmuir.cmu.ac.th/handle/6653943832/5432
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