Formation of titanium monoxide (001) single-crystalline thin film induced by ion bombardment of titanium dioxide (110)
Formation of titanium monoxide (001) single-crystalline thin film induced by ion bombardment of titanium dioxide (110)
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DOI：
10.1038/ncomms7147
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发表时间：
2015-02-01
影响因子：
16.6
通讯作者：
de la Fuente, O. Rodriguez
中科院分区：
文献类型：
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作者：
Pabon, B. M.;Beltran, J. I.;de la Fuente, O. Rodriguez
大量的技术应用证明了为什么二氧化钛可能是研究最多的氧化物，并且对其性能的最佳利用经常需要对表面进行受控的改性。低能离子轰击是用于此目的的最广泛的技术之一，并且最近已用于钛氧化物等应用，以有利于电阻切换机制或形成透明导电层。以这种方式改性的表面经常被描述为减少的和有缺陷的，具有高密度的氧空位。与这一观点不同的是，我们在这里表明，金红石二氧化钛 (110) 上的高离子剂量会导致其转变为具有岩盐结构的纳米单晶一氧化钛 (001) 薄膜。这种能力的发现可能为以前未报道过的离子轰击新技术应用铺平道路，该应用可用于制造异质结构和界面。
A plethora of technological applications justify why titanium dioxide is probably the most studied oxide, and an optimal exploitation of its properties quite frequently requires a controlled modification of the surface. Low-energy ion bombardment is one of the most extended techniques for this purpose and has been recently used in titanium oxides, among other applications, to favour resistive switching mechanisms or to form transparent conductive layers. Surfaces modified in this way are frequently described as reduced and defective, with a high density of oxygen vacancies. Here we show, at variance with this view, that high ion doses on rutile titanium dioxide (110) induce its transformation into a nanometric and single-crystalline titanium monoxide (001) thin film with rocksalt structure. The discovery of this ability may pave the way to new technical applications of ion bombardment not previously reported, which can be used to fabricate heterostructures and interfaces.