Effect of Process Parameter on Domain Wall Dynamics and Dielectric Properties of Ce and Cr Co-doped SBN50
碩士 === 國立成功大學 === 材料科學及工程學系碩博士班 === 101 === Strontium barium niobate ( SBN ) ceramic is a good electro-optic material. It has Tetragonal Tungsten Bronze (TTB) structure and SBN is a non centro-symmerty ferroelectrics. It has very high linear electro-optical coefficient、high pyroelectric coefficient...
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ndltd-TW-101NCKU51591782015-10-13T22:51:44Z http://ndltd.ncl.edu.tw/handle/44458737924492687046 Effect of Process Parameter on Domain Wall Dynamics and Dielectric Properties of Ce and Cr Co-doped SBN50 製程參數對Ce及Cr共添加之鍶鋇鈮陶瓷電域壁動力學及介電性質之影響 Tzu-HaoLi 李梓豪 碩士 國立成功大學 材料科學及工程學系碩博士班 101 Strontium barium niobate ( SBN ) ceramic is a good electro-optic material. It has Tetragonal Tungsten Bronze (TTB) structure and SBN is a non centro-symmerty ferroelectrics. It has very high linear electro-optical coefficient、high pyroelectric coefficient and good photorefractive effect, SBN ceramic uses CZ method to growth now. Though the properties of the SBN single crystal has been intensively studied, its high cost and difficult fabrication have limited its practical use, such as shape, size or mechanical strength,hence it is necessary to develop polycrystal SBN ceramic. We take advantage of Cole-Cole plot to study the dielectric properties and domain wall dynamics of pure SBN50 and co-doping Cr2O3,CeO2 under ac field, and analyze effects of different temperature and doping ratio, then we use function to fit the region of relaxation. Finally, we observe the effect of co-doping in SBN50 by the fitting parameters. Wen-Dung Hsu Wen-Dung Hsu 許文東 林士剛 2013 學位論文 ; thesis 141 zh-TW |
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碩士 === 國立成功大學 === 材料科學及工程學系碩博士班 === 101 === Strontium barium niobate ( SBN ) ceramic is a good electro-optic material. It has Tetragonal Tungsten Bronze (TTB) structure and SBN is a non centro-symmerty ferroelectrics. It has very high linear electro-optical coefficient、high pyroelectric coefficient and good photorefractive effect, SBN ceramic uses CZ method to growth now. Though the properties of the SBN single crystal has been intensively studied, its high cost and difficult fabrication have limited its practical use, such as shape, size or mechanical strength,hence it is necessary to develop polycrystal SBN ceramic.
We take advantage of Cole-Cole plot to study the dielectric properties and domain wall dynamics of pure SBN50 and co-doping Cr2O3,CeO2 under ac field, and analyze effects of different temperature and doping ratio, then we use function to fit the region of relaxation.
Finally, we observe the effect of co-doping in SBN50 by the fitting parameters.
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author2 |
Wen-Dung Hsu |
author_facet |
Wen-Dung Hsu Tzu-HaoLi 李梓豪 |
author |
Tzu-HaoLi 李梓豪 |
spellingShingle |
Tzu-HaoLi 李梓豪 Effect of Process Parameter on Domain Wall Dynamics and Dielectric Properties of Ce and Cr Co-doped SBN50 |
author_sort |
Tzu-HaoLi |
title |
Effect of Process Parameter on Domain Wall Dynamics and Dielectric Properties of Ce and Cr Co-doped SBN50 |
title_short |
Effect of Process Parameter on Domain Wall Dynamics and Dielectric Properties of Ce and Cr Co-doped SBN50 |
title_full |
Effect of Process Parameter on Domain Wall Dynamics and Dielectric Properties of Ce and Cr Co-doped SBN50 |
title_fullStr |
Effect of Process Parameter on Domain Wall Dynamics and Dielectric Properties of Ce and Cr Co-doped SBN50 |
title_full_unstemmed |
Effect of Process Parameter on Domain Wall Dynamics and Dielectric Properties of Ce and Cr Co-doped SBN50 |
title_sort |
effect of process parameter on domain wall dynamics and dielectric properties of ce and cr co-doped sbn50 |
publishDate |
2013 |
url |
http://ndltd.ncl.edu.tw/handle/44458737924492687046 |
work_keys_str_mv |
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