Dielectric properties of low temperature sintered LiF doped BaFe0.5Nb0.5O3

Sintering of BaFe0.5Nb0.5O3:BFN requires the use of high temperatures to achieve satisfactory densification of this material. The aim of this study is to determine the effect of LiF on the sintering and electrical properties of BFN ceramics (the LiF was added as a sintering agent). The results show...

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Main Authors: Intatha U., Eitssayeam S., Pengpat K., MacKenzie K.J.D., Tunkasiri T.
Format: Article
Language:English
Published: 2014
Online Access:http://www.scopus.com/inward/record.url?eid=2-s2.0-33750622637&partnerID=40&md5=95dabf20796727b884d44909987d14b0
http://cmuir.cmu.ac.th/handle/6653943832/5330
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-53302014-08-30T02:56:25Z Dielectric properties of low temperature sintered LiF doped BaFe0.5Nb0.5O3 Intatha U. Eitssayeam S. Pengpat K. MacKenzie K.J.D. Tunkasiri T. Sintering of BaFe0.5Nb0.5O3:BFN requires the use of high temperatures to achieve satisfactory densification of this material. The aim of this study is to determine the effect of LiF on the sintering and electrical properties of BFN ceramics (the LiF was added as a sintering agent). The results show that LiF lowers the sintering temperature by 150-200 °C without affecting the formation of BFN. Ceramics doped with 2-3% LiF show optimum densities of about 93-94% of the theoretical value when sintered at low temperatures (1000-1100 °C). Samples containing 2-3% LiF show the following dielectric behaviour. The dielectric constant curves are very broad over a wide temperature range, with room-temperature values of 7154 in the 2% LiF sample and 2527 in the 3% LiF sample. The dielectric constants gradually increase up to 300 °C to values of about 38,862 in the 2% LiF sample and 40,471 in the 3% LiF sample. Furthermore, the addition of 2-3% LiF to BFN causes a reduction in the room-temperature dielectric loss from 4.29 in undoped BFN to less than 1.2 for LiF-containing samples. © 2006 Elsevier B.V. All rights reserved. 2014-08-30T02:56:25Z 2014-08-30T02:56:25Z 2007 Article 0167577X 10.1016/j.matlet.2006.04.030 MLETD http://www.scopus.com/inward/record.url?eid=2-s2.0-33750622637&partnerID=40&md5=95dabf20796727b884d44909987d14b0 http://cmuir.cmu.ac.th/handle/6653943832/5330 English
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
language English
description Sintering of BaFe0.5Nb0.5O3:BFN requires the use of high temperatures to achieve satisfactory densification of this material. The aim of this study is to determine the effect of LiF on the sintering and electrical properties of BFN ceramics (the LiF was added as a sintering agent). The results show that LiF lowers the sintering temperature by 150-200 °C without affecting the formation of BFN. Ceramics doped with 2-3% LiF show optimum densities of about 93-94% of the theoretical value when sintered at low temperatures (1000-1100 °C). Samples containing 2-3% LiF show the following dielectric behaviour. The dielectric constant curves are very broad over a wide temperature range, with room-temperature values of 7154 in the 2% LiF sample and 2527 in the 3% LiF sample. The dielectric constants gradually increase up to 300 °C to values of about 38,862 in the 2% LiF sample and 40,471 in the 3% LiF sample. Furthermore, the addition of 2-3% LiF to BFN causes a reduction in the room-temperature dielectric loss from 4.29 in undoped BFN to less than 1.2 for LiF-containing samples. © 2006 Elsevier B.V. All rights reserved.
format Article
author Intatha U.
Eitssayeam S.
Pengpat K.
MacKenzie K.J.D.
Tunkasiri T.
spellingShingle Intatha U.
Eitssayeam S.
Pengpat K.
MacKenzie K.J.D.
Tunkasiri T.
Dielectric properties of low temperature sintered LiF doped BaFe0.5Nb0.5O3
author_facet Intatha U.
Eitssayeam S.
Pengpat K.
MacKenzie K.J.D.
Tunkasiri T.
author_sort Intatha U.
title Dielectric properties of low temperature sintered LiF doped BaFe0.5Nb0.5O3
title_short Dielectric properties of low temperature sintered LiF doped BaFe0.5Nb0.5O3
title_full Dielectric properties of low temperature sintered LiF doped BaFe0.5Nb0.5O3
title_fullStr Dielectric properties of low temperature sintered LiF doped BaFe0.5Nb0.5O3
title_full_unstemmed Dielectric properties of low temperature sintered LiF doped BaFe0.5Nb0.5O3
title_sort dielectric properties of low temperature sintered lif doped bafe0.5nb0.5o3
publishDate 2014
url http://www.scopus.com/inward/record.url?eid=2-s2.0-33750622637&partnerID=40&md5=95dabf20796727b884d44909987d14b0
http://cmuir.cmu.ac.th/handle/6653943832/5330
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