Glass transition singularities and slow relaxation

T. Odagaki, J. Matsui, Y. Hiwatari

研究成果: Contribution to journalConference article査読

5 被引用数 (Scopus)

抄録

Generalized susceptibility for the binary soft-sphere mixtures is computed for the frequency range including both the α and β peaks in a supercooled fluid phase with a super-long-time molecular dynamics simulation. It is shown that the α peak has a non-Debye type frequency dependence and the β peak is essentially of a Debye-type. The slow dynamics is analyzed on the basis of the trapping diffusion model which takes account of two types of diffusive dynamics. With the use of the coherent medium approximation, the frequency dependence of dynamical quantities are shown to agree with the observation. The primary relaxation time is shown to exponentially diverge at a certain temperature below the glass transition point, in line with the Vogel-Fulcher equation. A unified view for the Vogel-Fulcher temperature, the glass transition temperature and the kinetic transition temperature is give on the basis of the trapping diffusion model.

本文言語英語
ページ(範囲)337-346
ページ数10
ジャーナルMaterials Research Society Symposium - Proceedings
367
出版ステータス出版済み - 1 1 1995
イベントProceedings of the 1994 MRS Fall Meeting - Boston, MA, USA
継続期間: 11 28 199412 2 1994

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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