| 研究生: |
甘承訓 Kan, Cheng-Hsun |
|---|---|
| 論文名稱: |
製程及電場對鐵酸鉍漏電流機制與介電行為之影響 The effect of processing and electric field on leakage-current mechanism and dielectric behavior of bismuth ferrite |
| 指導教授: |
方滄澤
Fang, Tsang-Tze |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 材料科學及工程學系 Department of Materials Science and Engineering |
| 論文出版年: | 2012 |
| 畢業學年度: | 100 |
| 語文別: | 中文 |
| 論文頁數: | 102 |
| 中文關鍵詞: | 鐵酸鉍 、複鐵材料 、電滯曲線 、漏電流機制 、介電行為 |
| 外文關鍵詞: | BiFeO3, hysteresis loop, leakage current mechanism, dielectric behavior |
| 相關次數: | 點閱:112 下載:5 |
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鐵酸鉍(統稱BFO)是一種十分富有潛力的複鐵材料,雖然其在室溫下同時擁有鐵電性與反鐵磁性,但巨大的漏電流、甚至是雜相,皆有可能影響其鐵電性質。
本實驗利用濕式化學法製作純相BFO粉末,並利用製程上參數的改變,藉由XRD探討其雜相生成趨勢以及觀察其電滯曲線。此外,在施加電場與否條件下,找出各種製程參數的BFO漏電流機制,最後並討論施加電場前後其介電行為。
BiFeO3 (BFO) is a potentially multiferroic materials. Despite it exhibits ferroelectric ordering and antiferromagnetic ordering at room temperature, large leakage current and second phase can effect it’s ferroelectric ordering.
In this study, we present a simple wet chemical route for obtaining pure BFO powders. By changing process parameters, we explore the trend of the generation of impurity phases and observation of the hysteresis loop. In addition, under the conditions of an electric field is applied or not, we find out the BFO leakage current mechanisms of the various process parameters. Finally, we discuss the dielectric behavior before and after the electric field is applied.
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