SEGREGATION EFFECT ON SURFACE COMPOSITION IN ALLOY SPUTTERING
-
Abstract
The modified dynamic TCIS (Transport and atomic Collision cascade of energetic Ions an Solids) Monte Carlo program including the radiation-enhanced Gibbsian segregation (REGS) is employed to estimate the compositional distributions at surface of the Au0.56Cu0.44 alloy under 2keV Ar+ ion bombardment at high dose. The calculation results exhibit that the Au composition enriches in the first layer (74 at.%), depletes in the second layer (37 at.%) and gradually rises with depth to the bulk composition. The effect of the relation between sputter depth and segregation layer on the surface concentration of Au0.56Cu0.44 is also discussed. -
References
-
Related Articles
[1] FAN Ping, ZHENG Zhuang-Hao, LIANG Guang-Xing, CAI Xing-Min, ZHANG Dong-Ping. Composition-Dependent Characterization of Sb2Te3 Thin Films Prepared by Ion Beam Sputtering Deposition [J]. Chin. Phys. Lett., 2010, 27(8): 087201. doi: 10.1088/0256-307X/27/8/087201 [2] XUE Gang, PENG Long, ZHANG Huai-Wu. Effect of Sputtering Parameters on Film Composition, Crystal Structure, and Coercivity of SmCo Based Films Deposited on Si (100) Substrates [J]. Chin. Phys. Lett., 2010, 27(1): 017501. doi: 10.1088/0256-307X/27/1/017501 [3] S. S. Ng, Z. Hassan, H. Abu Hassan. Composition Dependence of Surface Phonon Polariton Mode in Wurtzite InxGa1-xN (0≤x≤1) Ternary Alloy [J]. Chin. Phys. Lett., 2008, 25(12): 4378-4380. [4] WANG Tie-Shan, CHEN Liang, PENG Hai-Bo, CHENG Rui, XIANG Yang, WANG Yu-Yu, XIAO Guo-Qing. Sputtering Induced by Arq+ Impact on Nb Surface [J]. Chin. Phys. Lett., 2008, 25(10): 3643-3645. [5] DENG Bai-Quan, YAN Jian-Cheng, HUANG Jin-Hua, PENG Li-Lin. New Description Model of Sputtering on Material Surface [J]. Chin. Phys. Lett., 2003, 20(7): 1098-1101. [6] CAO Ze-xian, Ralf Mueller, WANG En-ge, NIE Yu-xin. Equilibrium Segregation to Free Surface:Kinet ics and Experiment [J]. Chin. Phys. Lett., 1999, 16(5): 364-366. [7] LIU Ri-ping, JING Qin, CAO Li-min, ZHANG Ming, ZHANG Fu-xiang, ZHANG Xiang-yi, ZHAO Jian-hua, HE Duan-wei, XU Ying-fan, WANG Wen-kui. Solidification of Undercooled Ge73.7Ni26.3 Alloy Subjected to Sputtering-Deposition of Ni Clusters [J]. Chin. Phys. Lett., 1998, 15(2): 149-151. [8] WU Xijun, HU Bin, ZHENG Qingqi. EFFECT OF SULPHUR AND CARBON SEGREGATION ON CHEMICAL BONDING OF GRAIN BOUNDARIES IN BCC METAL IRON [J]. Chin. Phys. Lett., 1988, 5(4): 157-160. [9] CHEN Naiqun, ZHANG Qiangji, HUA Zhongyi. THE MECHANISM OF SURFACE SEGREGATION BY THE METHOD OF MECHANICAL POLISHING [J]. Chin. Phys. Lett., 1986, 3(3): 129-132. [10] QU Zhe, XIE Tian-sheng. A MODEL FOR SIMULATION OF THE COMPOSITION-DEPTH PROFILE OBTAINED BY ION SPUTTERING [J]. Chin. Phys. Lett., 1985, 2(4): 165-168.
DownLoad: