Studies of Correlations between Surface Composition Changes and Ion Bombardment Fluences of Multicomponent Materials

J Mater Sci Technol ›› 1993, Vol. 9 ›› Issue (3): 229-231.

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Studies of Correlations between Surface Composition Changes and Ion Bombardment Fluences of Multicomponent Materials

Received:1993-05-28 Revised:1993-05-28 Online:1993-05-28 Published:2009-10-10

Abstract

Abstract: Correlations between surface composition changes and ion bombardment fluences were studied for multicomponent materials by using a dynamic Monte Carlo program,including the preferential sputtering and bombardment-induced Gibbsian segregation (BIGS) processes.For the case of 1 keV KR-~(10)B_(0.02)~(11)B_(0.08) (the most simple multicomponent material system),it is found that the ~(10)B composition enriches at the surface at low fluences but depletes at the surface at high fluences.For the case of 1 keV Ar-Pt_(0.5)Cu_(0.5).it is found that the Cu composition at the topmost surface is always under the bulk composition between zero and high fluences,but the evident composition gradient of Cu(the segregation species) exists in the surface at low fluences.The effects of the preferential sputtering and BIGS processes on above two surface composition profiles are also discussed.

Key words: implantation, preferential sputtering, BIGS

Liping ZHENG Xiqing XIA Mingyao LI Shanghai Institute of Nuclear Research,Academia Sinca,Shanghai,201800,ChinaRisheng LI Lab.of Atomic Imaging of Solids,Institute of Metal Research,Academia Sinica,Shenyang,110015,China. Studies of Correlations between Surface Composition Changes and Ion Bombardment Fluences of Multicomponent Materials[J]. J Mater Sci Technol, 1993, 9(3): 229-231.

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Studies of Correlations between Surface Composition Changes and Ion Bombardment Fluences of Multicomponent Materials

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