Effect of Al2O3 nanoparticles on grain sizes and dielectric properties of BaFe1/2Nb1/2O3 ceramics

In this research, the effect of Al2O3 nanoparticles on grain size and dielectric properties of BaFe1/2Nb 1/2O3 (BFN) ceramics were investigated. The powder was prepared by the conventional mixed oxide method and calcined at 900-1200°C for 4h. The optimum temperature for calcinations the pure phase,...

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Main Authors: Warangkanagool C., Chomchai W., Eitssayeam S.
Format: Conference or Workshop Item
Language:English
Published: 2014
Online Access:http://www.scopus.com/inward/record.url?eid=2-s2.0-84878708272&partnerID=40&md5=3c41373c3c8eb42a46bca05bf4b1319e
http://cmuir.cmu.ac.th/handle/6653943832/7059
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Institution: Chiang Mai University
Language: English
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spelling th-cmuir.6653943832-70592014-08-30T03:51:32Z Effect of Al2O3 nanoparticles on grain sizes and dielectric properties of BaFe1/2Nb1/2O3 ceramics Warangkanagool C. Chomchai W. Eitssayeam S. In this research, the effect of Al2O3 nanoparticles on grain size and dielectric properties of BaFe1/2Nb 1/2O3 (BFN) ceramics were investigated. The powder was prepared by the conventional mixed oxide method and calcined at 900-1200°C for 4h. The optimum temperature for calcinations the pure phase, was found to be about 1100°C. The calcined powders and Al2O3 nanoparticles (0.5, 1 and 2 vol%) were ball milled with 1 wt% PVA in ethyl alcohol for 12 h using the same method as mentioned earlier. The slurry was dried, sieved and pressed into a disc shape and sintered at 1350°C for 4h with heating rate of 5°C/min. The microstructure was examined by scanning electron microscope (SEM). The dielectric constant and dielectric loss of BFN ceramics with 0, 0.5, 1 and 2 vol% Al2O3 nanoparticles were measured at 1 kHz frequency at room temperature using LCR meter. The results show that, the average grain sizes of BFN ceramics were found to decrease with the addition of the Al2O3 nanoparticles. The dielectric loss of BFN ceramics with Al2O3 nanoparticles was decreased about 40-50% of pure BFN ceramics. Copyright © Taylor & Francis Group, LLC. 2014-08-30T03:51:32Z 2014-08-30T03:51:32Z 2013 Conference Paper 10584587 10.1080/10584587.2013.778737 97269 IFERE http://www.scopus.com/inward/record.url?eid=2-s2.0-84878708272&partnerID=40&md5=3c41373c3c8eb42a46bca05bf4b1319e http://cmuir.cmu.ac.th/handle/6653943832/7059 English
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
language English
description In this research, the effect of Al2O3 nanoparticles on grain size and dielectric properties of BaFe1/2Nb 1/2O3 (BFN) ceramics were investigated. The powder was prepared by the conventional mixed oxide method and calcined at 900-1200°C for 4h. The optimum temperature for calcinations the pure phase, was found to be about 1100°C. The calcined powders and Al2O3 nanoparticles (0.5, 1 and 2 vol%) were ball milled with 1 wt% PVA in ethyl alcohol for 12 h using the same method as mentioned earlier. The slurry was dried, sieved and pressed into a disc shape and sintered at 1350°C for 4h with heating rate of 5°C/min. The microstructure was examined by scanning electron microscope (SEM). The dielectric constant and dielectric loss of BFN ceramics with 0, 0.5, 1 and 2 vol% Al2O3 nanoparticles were measured at 1 kHz frequency at room temperature using LCR meter. The results show that, the average grain sizes of BFN ceramics were found to decrease with the addition of the Al2O3 nanoparticles. The dielectric loss of BFN ceramics with Al2O3 nanoparticles was decreased about 40-50% of pure BFN ceramics. Copyright © Taylor & Francis Group, LLC.
format Conference or Workshop Item
author Warangkanagool C.
Chomchai W.
Eitssayeam S.
spellingShingle Warangkanagool C.
Chomchai W.
Eitssayeam S.
Effect of Al2O3 nanoparticles on grain sizes and dielectric properties of BaFe1/2Nb1/2O3 ceramics
author_facet Warangkanagool C.
Chomchai W.
Eitssayeam S.
author_sort Warangkanagool C.
title Effect of Al2O3 nanoparticles on grain sizes and dielectric properties of BaFe1/2Nb1/2O3 ceramics
title_short Effect of Al2O3 nanoparticles on grain sizes and dielectric properties of BaFe1/2Nb1/2O3 ceramics
title_full Effect of Al2O3 nanoparticles on grain sizes and dielectric properties of BaFe1/2Nb1/2O3 ceramics
title_fullStr Effect of Al2O3 nanoparticles on grain sizes and dielectric properties of BaFe1/2Nb1/2O3 ceramics
title_full_unstemmed Effect of Al2O3 nanoparticles on grain sizes and dielectric properties of BaFe1/2Nb1/2O3 ceramics
title_sort effect of al2o3 nanoparticles on grain sizes and dielectric properties of bafe1/2nb1/2o3 ceramics
publishDate 2014
url http://www.scopus.com/inward/record.url?eid=2-s2.0-84878708272&partnerID=40&md5=3c41373c3c8eb42a46bca05bf4b1319e
http://cmuir.cmu.ac.th/handle/6653943832/7059
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