The structural behavior of SrTiO3 under 400 keV Ne2+ ion irradiation
The structural behavior of SrTiO3 under 400 keV Ne2+ ion irradiation
复制标题
400 keV Ne2离子辐照下SrTiO3的结构行为
DOI：
10.1007/s00339-015-9492-6
复制
发表时间：
2015-09
期刊：
影响因子：
--
通讯作者：
Y.H.Li
中科院分区：
文献类型：
--
作者：
L.J. Chen;D.P. Xu;Y.Q. Wang;Y.H.Li
研究了在液氮和室温下400 keV Ne ~（2+）离子辐照下多晶钙钛矿型SrTiO_3的结构行为。掠入射X射线衍射技术被用来研究辐射诱导的结构演变。SrTiO_3的辐照行为强烈依赖于辐照温度。在液氮温度下，样品表现出显着的晶格膨胀和非晶化，而在室温下，晶格膨胀是不太明显，甚至在5.0 dpa的最高辐照剂量没有检测到非晶化。然而，Ne 2+照射诱导在两个温度下的XRD图案中的峰分裂。此外，第一性原理计算已与VASP，涉及可能的缺陷类型，以确定哪种缺陷是负责SrTiO 3的辐射效应。结果表明，氧空位缺陷是最有可能对SrTiO 3的辐射行为作出贡献。
The structural behavior of polycrystalline perovskite SrTiO3 under 400 keV Ne2+ ion irradiation at both liquid nitrogen (LN2) and room temperature (RT) has been investigated. The grazing incident X-ray diffraction technique was applied to examine the radiation-induced structural evolution. The radiation behavior of SrTiO3 depends strongly on the irradiation temperature. At LN2 temperature, the samples exhibit significant lattice swelling and amorphization, whereas at RT, the lattice swelling is much less conspicuous and no amorphization is detected even at the highest irradiation dose of 5.0 dpa. Nevertheless, Ne2+ irradiation induces peak splitting in XRD patterns at both temperatures. Furthermore, first-principle calculations have been performed with VASP, involving possible defect types, to identify which defect is responsible for the radiation effect of SrTiO3. The results reveal that the oxygen vacancy defect is the most likely to contribute to the radiation behavior of SrTiO3.
DOI：
10.2172/1021288
发表时间：
2011-04
期刊：
--
影响因子：
--
作者：
R. Ginhoven;J. Jaffe;Weilin Jiang;D. Strachan
通讯作者：
R. Ginhoven;J. Jaffe;Weilin Jiang;D. Strachan