研究生: |
侯詠智 |
---|---|
論文名稱: |
紅熒烯與鈷在矽(100)上形成複合材料的結構與磁性研究 Structures and magnetic properties of composite films containing Cobalt and Rubrene |
指導教授: | 蔡志申 |
學位類別: |
碩士 Master |
系所名稱: |
物理學系 Department of Physics |
論文出版年: | 2013 |
畢業學年度: | 101 |
語文別: | 中文 |
論文頁數: | 123 |
中文關鍵詞: | 紅熒烯 、混鍍 、鈷 、磁光柯爾效應 、結構 |
論文種類: | 學術論文 |
相關次數: | 點閱:207 下載:16 |
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本實驗室利用磁光柯爾效應儀(MOKE)、原子力顯微鏡(AFM)與X光繞射儀(XRD),來分析使用磁控濺鍍的鈷(Cobalt)與蒸鍍的紅熒烯(Rubrene)在矽(Si(100))基板上的結構與磁特性,第一部分先探討Co/Si(100)的不同濺鍍功率的表面結構與磁特性,再來是Rubrene/Si(100)的不同溫度與不同厚度之表面結構,Co/Si(100)於所有濺鍍功率都會有三角錐結構,只是濺鍍功率低的比例較少,而Rubrenen/Si(100)於不同的溫度與時間都會有結構上的變化,但無論是改變蒸鍍溫度或時間,表面的堆積過程是雷同的,都是由顆粒狀轉變為網狀結構。第二部分將不同的鈷與紅熒烯混合比例分成三組,第一組Co0.5Rubrene0.5/Si(100)、第二組Co0.6Rubrene0.3/Si(100)、第三組Co0.75Rubrene0.25/Si(100),改變鈷的鍍率但紅熒烯的蒸鍍條件完全相同,分析結構與磁性之間相互影響之現象。這三組皆無三角錐結構,第一組樣品表面平整,且矯頑力與表面粗糙度相關,表面粗糙度越大矯頑力越大。第二組與第三組較薄的前幾個樣品開始出現顆粒狀結構,且矯頑力與顆粒大小相關,顆粒越大矯頑力越大。為後一個部分是將Co0.5Rubrene0.5/Si(100)與Co0.75Rubrene0.25/Si(100)這兩組的紅熒烯使用酒精沖洗掉,分析其表面結構與磁性的關係,發現這兩組表面有不一樣的成膜方式,但相同的是洗掉紅熒烯會將部分懸浮的鈷粒一起帶走,所以洗掉紅熒烯後的矯頑力比洗掉前小。
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