| 研究生: |
邱詩航 chiu, shih-hang |
|---|---|
| 論文名稱: |
[Si 20Å/Mn XÅ]30結構與磁、電特性研究 Study of [Si 20Å/Mn XÅ]30 structure and magnetic、electric property |
| 指導教授: |
黃榮俊
Huang, J.C.A |
| 學位類別: |
碩士 Master |
| 系所名稱: |
理學院 - 物理學系 Department of Physics |
| 論文出版年: | 2005 |
| 畢業學年度: | 93 |
| 語文別: | 中文 |
| 論文頁數: | 79 |
| 中文關鍵詞: | 磁性、稀磁性 |
| 外文關鍵詞: | diluted |
| 相關次數: | 點閱:52 下載:2 |
| 分享至: |
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本實驗利用分子束磊晶系統成長[Si 20Å/Mn XÅ]30三十週期多層膜,結構方面至同步輻射中心Wigger-C光束線對錳K邊緣光譜分析樣品局部電子結構及幾何結構,排除系統中錳-錳鍵結,使用超導量子干涉儀量測出樣品X=1Å具有室溫鐵磁性,電性方面,使用霍爾效應量測載子濃度變化,並探討[Si 20Å/Mn XÅ]30磁性機制。
[Si 20Å/Mn XÅ]30 multilayers has been prepared by MBE system. The structures probed by X-ray absorption spectroscopy are reported.Above room-temperature ferromagnetism has been boserved for x=1Å. We discussed the carrier induced ferromangetism theory with [Si 20Å/Mn XÅ] by Hall effect measurements .
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