Accumulation of ion beam induced disorder in strontium titanate

被引：6

作者：

Thevuthasan, S ^{[1
]}

Jiang, W ^{[1
]}

Shutthanandan, V ^{[1
]}

Weber, WJ ^{[1
]}

机构：

[1] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2003年 / 206卷

关键词：

amorphization; ceramics; ion irradiation; radiation effects; atomic defects;

D O I：

10.1016/S0168-583X(03)00710-9

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Damage accumulation has been investigated in single crystal SrTiO2(100) irradiated with 1.0 MeV Au2+ by using in situ Rutherford backscattering spectrometry in channeling geometry (RBS/C). Samples were irradiated at temperatures of 170, 300 and 350 K with ion fluences ranging from 0.05 to 0.60 Au2+/nm(2). The in situ RBS/C analysis indicates that the relative disorder in both Sr and Ti sublattices shows a strong sigmoidal dependence on ion dose. After an ion fluence of 0.30 Au2+/nm(2) at 170 K, the buried region at the damage peak (similar to60 nm) becomes fully amorphous, which corresponds to a dose of similar to0.39 dpa. For irradiation at 300 and 350 K, ion fluences of 0.40 Au2+/nm(2) (similar to0.52 dpa) and 0.45 Au2+/nm(2) (similar to0.59 dpa) are necessary to achieve an amorphous state at the damage peak, respectively. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：162 / 165

页数：4

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