Ion irradiation damage in ilmenite at 100 K

被引：8

作者：

Mitchell, JN ^{[1
]}

Yu, N ^{[1
]}

Devanathan, R ^{[1
]}

Sickafus, KE ^{[1
]}

Nastasi, MA ^{[1
]}

Nord, GL ^{[1
]}

机构：

[1] US GEOL SURVEY,RESTON,VA 22092

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 1997年 / 127卷

关键词：

D O I：

10.1016/S0168-583X(96)01140-8

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A natural single crystal of ilmenite (FeTiO3) was irradiated at 100 K with 200 keV Ar2+. Rutherford backscattering spectroscopy and ion channeling with 2 MeV He+ ions were used to monitor damage accumulation in the surface region of the implanted crystal, At an irradiation fluence of 1 x 10(15) Ar2+/cm(2), considerable near-surface He+ ion dechanneling was observed, to the extent that ion yield from a portion of the aligned crystal spectrum reached the yield level of a random spectrum. This observation suggests that the near-surface region of the crystal was amorphized by the implantation. Cross-sectional transmission electron microscopy and electron diffraction on this sample confirmed the presence of a 150 nm thick amorphous layer. These results are compared to similar investigations on geikielite (MgTiO3) and spinel (MgAl2O4) to explore factors that may influence radiation damage response in oxides.

引用

页码：629 / 633

页数：5

共 26 条

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