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Theoretical calculations on atomistic behaviors in transition metals (Fe, Co, Ni)-Al multilayer system: ab initio approach

机译:过渡金属(Fe,Co,Ni)-Al多层体系中原子行为的理论计算:从头算方法

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摘要

The energetics and the structural characteristics of atomistic behaviors for transition metal (TM; Fe, Co and Ni)-A1 multiplayer systems were quantitatively investigated using ab initio calculations. The energy barriers for the surface diffusion of adatom were calculated to be 0.89, 1.01 and 1.98 eV for Fe, Co and Ni on A1 (0 0 1) systems, respectively. For A1/TM (0 0 1) systems, however, the energy barriers turned out to be relatively smaller than those for the corresponding opposite systems. It could be verified that the incorporation process for TM/A1 (0 0 1) system can be occurred much easier than that for the A1/TM (0 0 1) systems due to relatively small energy barriers and positive energy gains. 2005 Elsevier B.V. All rights reserved.
机译:使用从头算术定量研究了过渡金属(TM; Fe,Co和Ni)-A1多分子体系的能级和原子行为的结构特征。在A1(0 0 1)系统上,Fe,Co和Ni的吸附原子表面扩散的能垒分别为0.89、1.01和1.98 eV。但是,对于A1 / TM(0 0 1)系统,其能垒比相应的相对系统要小。可以验证的是,由于相对较小的能垒和正的能量增益,TM / A1(0 0 1)系统的掺入过程比A1 / TM(0 0 1)系统的掺入过程容易得多。 2005 Elsevier B.V.保留所有权利。

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