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Browsing by Author "蔡承佑"

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    脈衝雷射蒸鍍法製備氧化鈥鋅薄膜的探討: 結構、光學與磁性研究
    (2014) 蔡承佑; Cheng-You Tsai
    利用脈衝雷射沉積法製備氧化鋅摻鈥薄膜,鈥的原子莫耳濃度介於3~30%之間,沉積於c方向的藍寶石基板。鍍膜環境氧氣壓力為3×10-2mbar,基板溫度為750℃。部分樣品在溫度650℃進行一小時的退火。拉曼散射光譜顯示僅有濃度5%退火處理後的Ho樣品產生合金相。光致螢光光譜能將大部分的樣品分析出鋅空缺、鋅間隙以及鋅錯位的缺陷發光訊號,而整體發光強度隨著Ho摻入濃度的上升而增強。所有樣品在5K及300K外加磁場下的量測下表現皆為順磁性。

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