研究生: |
周依函 |
---|---|
論文名稱: |
雙羧基紫精對 Co/Cu(100) 薄膜的磁性影響研究 Effects of dicarboxylated viologens on the magentic properties of Co/Cu(100) films. |
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: | 2012 |
畢業學年度: | 100 |
語文別: | 中文 |
論文頁數: | 116 |
中文關鍵詞: | 紫精酸 、鈷 、矯頑場 、電位控制磁性表現 |
論文種類: | 學術論文 |
相關次數: | 點閱:90 下載:4 |
分享至: |
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本研究利用電鍍的方式成長鈷薄膜於銅(100),並量測其磁性表現,之後加入紫精酸分子於水溶液中,探測其磁性表現,並改變基底電位做一系列磁性表現之研究。首先,以紫精酸加入鹽酸水溶液中,了解紫精酸吸附於基底銅之情形,發現以負電位方向掃描可以使表面上的紫精酸排列較為一致。再者,研究鈷吸附於銅表面上,發現在銅臺階邊緣容易有鈷的吸附,且較難退吸附;而在銅臺階上較少鈷的吸附,且較易退吸附。嘗試以不同電位電鍍鈷薄膜,發現在-1050毫伏電鍍,形成的鈷薄膜較為平整,量測其磁性其矯頑場較小;以-1150毫伏電鍍鈷,形成的鈷薄膜表面起伏較大,薄膜之矯頑場較大。綜合以上條件,以-1050毫伏電鍍鈷薄膜,再將基底電位至-850毫伏、-800毫伏、-750毫伏、-700毫伏量測磁性,發現隨基底電位改變,薄膜之矯頑場變大,證明在這一簡單的單一磁性薄膜系統之磁性表現,可藉由水溶液中電位之改變來調變。接著,以相同的薄膜,將水溶液中加入紫精酸分子,同樣將基底電位設定為-850毫伏、-800毫伏、-750毫伏、-700毫伏量測其磁性表現,發現隨電位改變薄膜之矯頑場會變大。比較相同層數的鈷薄膜,在相同電位下,水溶液中含紫精酸時的矯頑場較小,表示薄膜與水溶液之介面會影響薄膜磁性的表現。
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