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Diffusion-limited and asymmetric growth of amorphous layer in Ni/Zr bilayer upon annealing

Published online by Cambridge University Press:  31 January 2011

W. S. Lai  and
B. X. Liu
W. S. Lai
Affiliation:
Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China, and State Key Laboratory of Solid-State Microstructure Physics, Nanjing University, Nanjing 210093, China
B. X. Liu*
Affiliation:
Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China, and State Key Laboratory of Solid-State Microstructure Physics, Nanjing University, Nanjing 210093, China
*
a)Address correspondence to this author.[email protected]
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Abstract

Asymmetric growth of amorphous layer in a Ni/Zr bilayer, in which a thin disordered interlayer is preset, upon annealing at medium temperatures is observed by molecular-dynamics simulation with an n-body potential. It is shown that the amorphous layer is extended from the interlayer with different speeds toward two opposite directions and that the growth kinetics follows time dependence of t1/2, indicating amorphization upon annealing in the Ni/Zr bilayer is indeed through a diffusion-limited reaction. Besides, two low temperature limits allowing the growth of amorphous layer toward Ni and Zr layers are also obtained.

Type
Articles
Information
Journal of Materials Research , Volume 13 , Issue 6 , June 1998 , pp. 1712 - 1716
Copyright
Copyright © Materials Research Society 1998

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