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理學院
物理學系
學位論文
學位論文
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http://rportal.lib.ntnu.edu.tw/handle/20.500.12235/73905
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search.filters.author.Hui-Ya Tsai
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search.filters.author.蔡蕙雅
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search.filters.subject.鐵
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search.filters.subject.AES
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search.filters.subject.diffusion
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鐵薄膜與鉑基底間溫度相依的介面擴散行為
(
2009
)
蔡蕙雅
;
Hui-Ya Tsai
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我們利用歐傑電子能譜術配合離子濺射,觀察隨離子濺射打掉表面原子系統表面的組成變化,分析1ML Fe/Pt(111)系統經升溫熱退火後鐵原子的擴散情形,並搭配理論估算鐵在合金各層的分布比例。 觀察570K,700K,910K熱退火後的鐵原子擴散,經由歐傑縱深分析後發現鐵原子大部份分布在表面前兩層至第三層,其中700K與910K鐵原子與白金在表層混合均勻,同時配合理論估算得知700K熱退火後,鐵原子在第一層佔73%,在第二層佔23%;910K熱退火後鐵原子在第一層佔 70%,第二層佔21%,比例差異不大。 1017K下的鐵原子則已經鑽入內層與白金均勻混合成類似塊材合金的結構。以理論估算得知鐵原子在每一層比例佔11%至15%,表示鐵原子往內層擴散並與白金混合均勻。
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