Surface-near Modifications of SrTiO3 local symmetry due to nitrogen implantation investigated by grazing incidence XANES

被引：8

作者：

Stoecker, Hartmut ^{[1
]}

Zschornak, Matthias ^{[1
,2
]}

Richter, Carsten ^{[1
]}

Hanzig, Juliane ^{[1
]}

Hanzig, Florian ^{[1
]}

Hinze, Arnd ^{[3
]}

Potzger, Kay ^{[2
]}

Gemming, Sibylle ^{[2
]}

Meyer, Dirk C. ^{[1
]}

机构：

[1] TU Bergakad Freiberg, Inst Expt Phys, D-09596 Freiberg, Germany

[2] Helmholtz Zentrum Dresden Rossendorf, Inst Ionenstrahlphys & Mat Forsch, D-01328 Dresden, Germany

[3] Fraunhofer Inst Zelltherapie & Immunol, D-04103 Leipzig, Germany

来源：

SCRIPTA MATERIALIA | 2014年 / 86卷

关键词：

Strontium titanate; Nitrogen implantation; X-ray absorption spectroscopy; Finite difference calculations; TI-K-EDGE; STRONTIUM-TITANATE; PRE-EDGE; FERROELECTRICITY; SPECTROSCOPY; DEPENDENCE; PRESSURE; SPECTRA;

D O I：

10.1016/j.scriptamat.2014.02.014

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Nitrogen ion implantation into strontium titanate single crystals causes a slight shift of the Ti-K edge position compared to pristine SrTiO3 and a strong increase of the second pre-edge peak in X-ray absorption near-edge spectroscopy (XANES) using grazing incidence geometry. Calculations by a finite difference method demonstrate that the strong increase of the second pre-edge feature in the defect distorted phase can be attributed to a static displacement of the Ti atom relative to the surrounding oxygen octahedron. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：1 / 4

页数：4

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