MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Electron-Phonon Mechanism of ω Phase Transformation
Jianfeng WanXiaolin LeiShipu ChenZuyao Xu
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2004 Volume 45 Issue 3 Pages 953-957

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Abstract

We have first calculated the driving force of ω phase transformation (PT) based on the electron-phonon interaction Hamiltonian. The nucleation rate of PT has also been investigated in the interaction system. The condensation of one single phonon makes a great contribution to the formation of charge density wave (CDW) whose amplitude is related to the wavevector of phonon. Considering the electron-phonon interaction and the condensation of phonon, Double Sine-Gordon equation of atomic phase angle has been proposed to study the nonlinear characteristics of ω PT and the electron-phonon coupling mechanism is suggested as the main mechanism of nucleation.

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© 2004 The Japan Institute of Metals and Materials
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