Electrical properties of bismuth germanate (Bi <inf>2</inf> GeO <inf>5</inf> ) ferroelectric glass-ceramics prepared by two different methods
© 2019, © 2019 Taylor & Francis Group, LLC. Ferroelectric Bi 2 GeO 5 glass-ceramics were fabricated using conventional and incorporation method. Glasses have been prepared from BiO 1.5 -GeO 2 -BO 1.5 ternary glass system by focusing on the region of 59 mol%BiO 1.5 : 23 mol%GeO 2 : 18 mol%BO 1...
Saved in:
Main Authors: | , , , , , |
---|---|
Format: | Journal |
Published: |
2019
|
Subjects: | |
Online Access: | https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85065489572&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/65597 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Institution: | Chiang Mai University |
id |
th-cmuir.6653943832-65597 |
---|---|
record_format |
dspace |
spelling |
th-cmuir.6653943832-655972019-08-05T04:43:34Z Electrical properties of bismuth germanate (Bi <inf>2</inf> GeO <inf>5</inf> ) ferroelectric glass-ceramics prepared by two different methods Surapong Panyata Sukum Eitssayeam Gobwute Rujijanagul Tawee Tunkasiri Anocha Munpakdee Kamonpan Pengpat Engineering Materials Science Physics and Astronomy © 2019, © 2019 Taylor & Francis Group, LLC. Ferroelectric Bi 2 GeO 5 glass-ceramics were fabricated using conventional and incorporation method. Glasses have been prepared from BiO 1.5 -GeO 2 -BO 1.5 ternary glass system by focusing on the region of 59 mol%BiO 1.5 : 23 mol%GeO 2 : 18 mol%BO 1.5 . The resulting glass was analyzed by using differential thermal analysis (DTA) for determining the crystallization temperature (T p ). Then, the prepared glass pieces were heat treated at T p . Effects of different fabrication methods on structure and electrical of the glass-ceramics were investigated. X-ray diffraction result of all glass-ceramics suggested that the main peak of glass-ceramics matched the orthorhombic structure of the pure Bi 2 GeO 5 phase. Microstructures of the prepared glass-ceramics have been found to change from rod-like crystallites to bulk crystallites on modifying the fabrication method. The Bi 2 GeO 5 glass-ceramics prepared by incorporation method presented higher dielectric constant than those of the Bi 2 GeO 5 glass-ceramics prepared by conventional method. Moreover, the Bi 2 GeO 5 glass-ceramic prepared by incorporation method possesses a large value of P max (0.94 µC/cm 2 ) comparing to that of the glass-ceramics prepared by conventional method (P max = 0.73 µC/cm 2 ). Thus, this study suggests that the incorporation method can effectively modify the microstructure of Bi 2 GeO 5 glass-ceramics, resulting in the improvement of dielectric and ferroelectric properties. 2019-08-05T04:36:59Z 2019-08-05T04:36:59Z 2019-01-02 Journal 16078489 10584587 2-s2.0-85065489572 10.1080/10584587.2019.1570032 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85065489572&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/65597 |
institution |
Chiang Mai University |
building |
Chiang Mai University Library |
country |
Thailand |
collection |
CMU Intellectual Repository |
topic |
Engineering Materials Science Physics and Astronomy |
spellingShingle |
Engineering Materials Science Physics and Astronomy Surapong Panyata Sukum Eitssayeam Gobwute Rujijanagul Tawee Tunkasiri Anocha Munpakdee Kamonpan Pengpat Electrical properties of bismuth germanate (Bi <inf>2</inf> GeO <inf>5</inf> ) ferroelectric glass-ceramics prepared by two different methods |
description |
© 2019, © 2019 Taylor & Francis Group, LLC. Ferroelectric Bi 2 GeO 5 glass-ceramics were fabricated using conventional and incorporation method. Glasses have been prepared from BiO 1.5 -GeO 2 -BO 1.5 ternary glass system by focusing on the region of 59 mol%BiO 1.5 : 23 mol%GeO 2 : 18 mol%BO 1.5 . The resulting glass was analyzed by using differential thermal analysis (DTA) for determining the crystallization temperature (T p ). Then, the prepared glass pieces were heat treated at T p . Effects of different fabrication methods on structure and electrical of the glass-ceramics were investigated. X-ray diffraction result of all glass-ceramics suggested that the main peak of glass-ceramics matched the orthorhombic structure of the pure Bi 2 GeO 5 phase. Microstructures of the prepared glass-ceramics have been found to change from rod-like crystallites to bulk crystallites on modifying the fabrication method. The Bi 2 GeO 5 glass-ceramics prepared by incorporation method presented higher dielectric constant than those of the Bi 2 GeO 5 glass-ceramics prepared by conventional method. Moreover, the Bi 2 GeO 5 glass-ceramic prepared by incorporation method possesses a large value of P max (0.94 µC/cm 2 ) comparing to that of the glass-ceramics prepared by conventional method (P max = 0.73 µC/cm 2 ). Thus, this study suggests that the incorporation method can effectively modify the microstructure of Bi 2 GeO 5 glass-ceramics, resulting in the improvement of dielectric and ferroelectric properties. |
format |
Journal |
author |
Surapong Panyata Sukum Eitssayeam Gobwute Rujijanagul Tawee Tunkasiri Anocha Munpakdee Kamonpan Pengpat |
author_facet |
Surapong Panyata Sukum Eitssayeam Gobwute Rujijanagul Tawee Tunkasiri Anocha Munpakdee Kamonpan Pengpat |
author_sort |
Surapong Panyata |
title |
Electrical properties of bismuth germanate (Bi <inf>2</inf> GeO <inf>5</inf> ) ferroelectric glass-ceramics prepared by two different methods |
title_short |
Electrical properties of bismuth germanate (Bi <inf>2</inf> GeO <inf>5</inf> ) ferroelectric glass-ceramics prepared by two different methods |
title_full |
Electrical properties of bismuth germanate (Bi <inf>2</inf> GeO <inf>5</inf> ) ferroelectric glass-ceramics prepared by two different methods |
title_fullStr |
Electrical properties of bismuth germanate (Bi <inf>2</inf> GeO <inf>5</inf> ) ferroelectric glass-ceramics prepared by two different methods |
title_full_unstemmed |
Electrical properties of bismuth germanate (Bi <inf>2</inf> GeO <inf>5</inf> ) ferroelectric glass-ceramics prepared by two different methods |
title_sort |
electrical properties of bismuth germanate (bi <inf>2</inf> geo <inf>5</inf> ) ferroelectric glass-ceramics prepared by two different methods |
publishDate |
2019 |
url |
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85065489572&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/65597 |
_version_ |
1681426298554023936 |