鈦酸鍶(110)基板上(103)YBCO薄膜的成長演進及其各向異性物理性質的探討

Abstract

本論文將詳細報告鈦酸鍶(110)基板上(103)YBCO薄膜的成長過程及其各向 異性物理性質。首先，介紹利用雷射蒸鍍法即時製備不同厚度薄膜的技術 ，並詳細描述利用此技術及AFM研究鈦酸鍶(110)基板上(103)YBCO薄膜成 長演進的結果。接著，我們比較此類薄膜在鈦酸鍶(110)基板上沿[110]s 及[001]s方向在電阻－溫度特性、臨界電流密度及釘扎機制間的差異，並 評估將這類薄膜運用在元件上的可行性。 In this thesis, we report the growth process and anisotropic physical properties of (103)YBCO thin films on STO(110) substrate in detail. First, we illustrate how we fabricated in- situ thin films with different thickness by PLD and describe explicitly the growth evolution of (103)YBCO thin films on STO(110) substrates by AFM. And then, we compare the R-T characteristics, critical current densities and pinning mechanism of this type of thin film between [110]s and [001]s substrate directions. Additionally th