Inherent amorphous structures and statistical mechanics of melting

Alexander Z. Patashinski, Mark A Ratner

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The statistical mechanics of local and global order in a condensed system is studied in a coarsened model in which the atomic arrangements in small volumes may be crystalline or amorphous. The melting behavior of the material is determined by two characteristic energies, the energy of an orientationally disordered locally crystalline state and the energy of a completely amorphous state. If the amorphization energy is high, the material retains local crystallinity even in the melt; then, at higher temperatures there is a crossover to a locally amorphous state. A material with a low-energy noncrystalline local packing exhibits amorphization melting; the phase transition is from an orientationally ordered crystal state to a fully amorphous melt. Strong interactions that are not of a two-body type are suggested to favor the first behavior, and to lead to structural liquids just above the melting point.

Original languageEnglish
Pages (from-to)7249-7256
Number of pages8
JournalJournal of Chemical Physics
Volume106
Issue number17
Publication statusPublished - May 1 1997

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Statistical mechanics
statistical mechanics
Melting
melting
Amorphization
Crystalline materials
energy
Melting point
Phase transitions
melting points
crystallinity
crossovers
Crystals
Liquids
liquids
crystals
Temperature

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Inherent amorphous structures and statistical mechanics of melting. / Patashinski, Alexander Z.; Ratner, Mark A.

In: Journal of Chemical Physics, Vol. 106, No. 17, 01.05.1997, p. 7249-7256.

Research output: Contribution to journalArticle

Patashinski, Alexander Z. ; Ratner, Mark A. / Inherent amorphous structures and statistical mechanics of melting. In: Journal of Chemical Physics. 1997 ; Vol. 106, No. 17. pp. 7249-7256.
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