Fabrication, phase and microstructural studies on chemically modified La-doped bismuth sodium titanate ceramics

In this research, heavily-doped (Bi 0.5 Na 0.5 )1- 1.5x La x TiO 3 ceramics with La up to x = 0.2 were prepared by a solid state reaction with chemical modification. The powders were prepared by calcining at 800°C for 2 h and ceramic pellets were fabricated by sintering at 1050 - 1200°C for 2 h unde...

Full description

Saved in:
Bibliographic Details
Main Authors: P. Eaksuwanchai, S. Jiansirisomboon, A. Watcharapasorn
Format: Journal
Published: 2018
Online Access:https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84891823605&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/48169
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Chiang Mai University
id th-cmuir.6653943832-48169
record_format dspace
spelling th-cmuir.6653943832-481692018-04-25T08:48:31Z Fabrication, phase and microstructural studies on chemically modified La-doped bismuth sodium titanate ceramics P. Eaksuwanchai S. Jiansirisomboon A. Watcharapasorn In this research, heavily-doped (Bi 0.5 Na 0.5 )1- 1.5x La x TiO 3 ceramics with La up to x = 0.2 were prepared by a solid state reaction with chemical modification. The powders were prepared by calcining at 800°C for 2 h and ceramic pellets were fabricated by sintering at 1050 - 1200°C for 2 h under ambient atmosphere. Phase, microstructure, dielectric and ferroelectric properties were investigated. It was found that nearly single phase of chemically modified La-doped BNT ceramics was obtained with much less secondary phase compared to conventional La-doped BNT ceramics. SEM micrographs showed that the grain size increased with La concentration and this trend was opposite to that of unmodified ceramics. Dielectric and ferroelectric properties were also found to be improved in modified ceramics due to the absence of secondary phase and enlarged grain size. © 2013 Copyright Taylor and Francis Group, LLC. 2018-04-25T08:48:30Z 2018-04-25T08:48:30Z 2013-01-01 Journal 15635112 00150193 2-s2.0-84891823605 10.1080/00150193.2013.843348 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84891823605&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/48169
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
description In this research, heavily-doped (Bi 0.5 Na 0.5 )1- 1.5x La x TiO 3 ceramics with La up to x = 0.2 were prepared by a solid state reaction with chemical modification. The powders were prepared by calcining at 800°C for 2 h and ceramic pellets were fabricated by sintering at 1050 - 1200°C for 2 h under ambient atmosphere. Phase, microstructure, dielectric and ferroelectric properties were investigated. It was found that nearly single phase of chemically modified La-doped BNT ceramics was obtained with much less secondary phase compared to conventional La-doped BNT ceramics. SEM micrographs showed that the grain size increased with La concentration and this trend was opposite to that of unmodified ceramics. Dielectric and ferroelectric properties were also found to be improved in modified ceramics due to the absence of secondary phase and enlarged grain size. © 2013 Copyright Taylor and Francis Group, LLC.
format Journal
author P. Eaksuwanchai
S. Jiansirisomboon
A. Watcharapasorn
spellingShingle P. Eaksuwanchai
S. Jiansirisomboon
A. Watcharapasorn
Fabrication, phase and microstructural studies on chemically modified La-doped bismuth sodium titanate ceramics
author_facet P. Eaksuwanchai
S. Jiansirisomboon
A. Watcharapasorn
author_sort P. Eaksuwanchai
title Fabrication, phase and microstructural studies on chemically modified La-doped bismuth sodium titanate ceramics
title_short Fabrication, phase and microstructural studies on chemically modified La-doped bismuth sodium titanate ceramics
title_full Fabrication, phase and microstructural studies on chemically modified La-doped bismuth sodium titanate ceramics
title_fullStr Fabrication, phase and microstructural studies on chemically modified La-doped bismuth sodium titanate ceramics
title_full_unstemmed Fabrication, phase and microstructural studies on chemically modified La-doped bismuth sodium titanate ceramics
title_sort fabrication, phase and microstructural studies on chemically modified la-doped bismuth sodium titanate ceramics
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84891823605&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/48169
_version_ 1681423199711002624