Vacancy-Mediated Phase Separation of Binary Alloy
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概要
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The most i?taportant eletnent process of the phase separatiora of loinary alloys is tlae vacancydifftrsion uauechanisrn. A set of plaenomenological dynauaaicatl eqtrations for the vacancy-uaaediatedphase separation is forrtatrlated frona a raaean-field f'ree eraergy and the ntrraaerical sitntnlation ofthe uaaodel is perforzmed. Frorau nttrnerical results, vacancies f'orraa cltrsters along plaase boundariesbetxveen two degenerate stable doraaains. The widtla of tlae vacancy-cltuster across the izaterfacegroxvs with the logarithunic ftrnction of tirne. If effects of xxarcancy-clttsters ?tre not donainant, thedynamics is not different frona tlaat by the excl'nange dynarauics. If' the effects are dotaainant. thecharacteristic lezagth proportional to the average dot'raain size groxvs witl'u the logarritlanaic functionof tinae. The analytical approach shoxvs tlaat the logarithrmic groxvtla of the claaracteristic lengthis related to the growth law of the width of the vacancy-clttster.
- 社団法人日本物理学会の論文
- 1999-11-15
著者
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Iwai T
Tohoku Univ. Sendai
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Iwai Toshiya
Department Of Physics Tohoku University
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Iwai Toshiya
Department Of Applied Physics Graduate School Of Engineering
関連論文
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- Numerical Study of Ordering Processes in a One-Dimensional System with Quenched Impurities
- Kink Dynamics in a One-Dimensional Non-Conserved TDGL System with a Quenched Impurity
- Numerical Analysis of Stochastic Resonance by Method of Stochastic Energetics : General Physics
- The Dynamics of Phase Separations in a System with Impurities(Abstracts of Doctral Dissertations)
- Vacancy-Mediated Phase Separation of Binary Alloy
- Simulation of Domain Growth in a System with Random Impurities