Effect of heat treatment conditions on properties of lead- free Bi<inf>2</inf>GeO<inf>5</inf>ferroelectric glass ceramics

Nowadays, lead-free ferroelectric materials have attracted much interest among materials scientists as a result of environmental concern. The bismuth germanate (Bi2GeO5) phase, one of the lead-free ferroelectric crystals, is of particular interest as its composition already contains good glass forme...

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Main Authors: P. Kantha, K. Pengpat, G. Rujijanagul, T. Tunkasiri, S. Eitssayeam, U. Intatha, S. Sirisoonthorn
Format: Conference Proceeding
Published: 2018
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/49448
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-494482018-08-16T02:17:34Z Effect of heat treatment conditions on properties of lead- free Bi<inf>2</inf>GeO<inf>5</inf>ferroelectric glass ceramics P. Kantha K. Pengpat G. Rujijanagul T. Tunkasiri S. Eitssayeam U. Intatha S. Sirisoonthorn Physics and Astronomy Nowadays, lead-free ferroelectric materials have attracted much interest among materials scientists as a result of environmental concern. The bismuth germanate (Bi2GeO5) phase, one of the lead-free ferroelectric crystals, is of particular interest as its composition already contains good glass former (GeO2) and can be prepared by an alternative glass ceramic route. In this work, the conventional melt-quenching method was used to produce the parent glass with composition of 60 mol% BiO1.5: 20 mol% GeO2: 20 mol% BO1.5. The as-received glass pieces were subjected to the heat treatment schedule at various crystallization temperatures and dwell-times. The glass and glass ceramics samples were then investigated by XRD, Raman spectroscopy and their dielectric properties were also measured. The XRD and Raman spectroscopy showed that the crystallinity of the prepared glass ceramics depended very much on crystallization temperature and dwell-time. The larger dielectric constant and lower dielectric loss were obtained as crystallinity of the glass ceramics enhanced. The highest dielectric constant (εr) was found at 77 with a low dielectric loss of about 0.005. © 2009 American Institute of Physics. 2018-08-16T02:17:34Z 2018-08-16T02:17:34Z 2009-11-25 Conference Proceeding 15517616 0094243X 2-s2.0-70450056296 10.1063/1.3203228 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=70450056296&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/49448
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Physics and Astronomy
spellingShingle Physics and Astronomy
P. Kantha
K. Pengpat
G. Rujijanagul
T. Tunkasiri
S. Eitssayeam
U. Intatha
S. Sirisoonthorn
Effect of heat treatment conditions on properties of lead- free Bi<inf>2</inf>GeO<inf>5</inf>ferroelectric glass ceramics
description Nowadays, lead-free ferroelectric materials have attracted much interest among materials scientists as a result of environmental concern. The bismuth germanate (Bi2GeO5) phase, one of the lead-free ferroelectric crystals, is of particular interest as its composition already contains good glass former (GeO2) and can be prepared by an alternative glass ceramic route. In this work, the conventional melt-quenching method was used to produce the parent glass with composition of 60 mol% BiO1.5: 20 mol% GeO2: 20 mol% BO1.5. The as-received glass pieces were subjected to the heat treatment schedule at various crystallization temperatures and dwell-times. The glass and glass ceramics samples were then investigated by XRD, Raman spectroscopy and their dielectric properties were also measured. The XRD and Raman spectroscopy showed that the crystallinity of the prepared glass ceramics depended very much on crystallization temperature and dwell-time. The larger dielectric constant and lower dielectric loss were obtained as crystallinity of the glass ceramics enhanced. The highest dielectric constant (εr) was found at 77 with a low dielectric loss of about 0.005. © 2009 American Institute of Physics.
format Conference Proceeding
author P. Kantha
K. Pengpat
G. Rujijanagul
T. Tunkasiri
S. Eitssayeam
U. Intatha
S. Sirisoonthorn
author_facet P. Kantha
K. Pengpat
G. Rujijanagul
T. Tunkasiri
S. Eitssayeam
U. Intatha
S. Sirisoonthorn
author_sort P. Kantha
title Effect of heat treatment conditions on properties of lead- free Bi<inf>2</inf>GeO<inf>5</inf>ferroelectric glass ceramics
title_short Effect of heat treatment conditions on properties of lead- free Bi<inf>2</inf>GeO<inf>5</inf>ferroelectric glass ceramics
title_full Effect of heat treatment conditions on properties of lead- free Bi<inf>2</inf>GeO<inf>5</inf>ferroelectric glass ceramics
title_fullStr Effect of heat treatment conditions on properties of lead- free Bi<inf>2</inf>GeO<inf>5</inf>ferroelectric glass ceramics
title_full_unstemmed Effect of heat treatment conditions on properties of lead- free Bi<inf>2</inf>GeO<inf>5</inf>ferroelectric glass ceramics
title_sort effect of heat treatment conditions on properties of lead- free bi<inf>2</inf>geo<inf>5</inf>ferroelectric glass ceramics
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=70450056296&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/49448
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