本文尝试采用纳米Au颗粒作为催化剂,利用化学气相沉积法合成铁纳米线.并着重研究了不同沉积温度对纳米线生长过程的影响.研究结果表明,过低沉积温度无法分解二茂铁,而过高沉积温度则会导致二茂铁高温分解副反应发生,生成大量碳颗粒,从而阻碍铁纳米线的生长.作者在600℃沉积温度下,以二茂铁为反应前驱体和蓝宝石作为基板,通过纳米Au颗粒的催化作用首次成功获得了大批量的铁单晶纳米线,并进一步揭示了纳米线的气-固生长机制.此外,本文还对合成的单晶Fe纳米线的磁各向异性进行了探讨.
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