Effects of topological disorder on thermodynamic and vibrational properties of amorphous solids

Authors

  • Giovanna D'Angelo Università degli Studi di Messina and Consiglio Nazionale delle Ricerche
  • Giuseppe Carini Università degli Studi di Messina and Consiglio Nazionale delle Ricerche

DOI:

https://doi.org/10.1478/AAPP.98S1A1

Keywords:

glasses, topological disorder, boson peak

Abstract

The disordered topology introduces additional degrees of freedom in the structure of amorphous solids mainly enhancing the local atomic mobility. This gives rise to substantial and amazing changes of the physical properties of these systems compared to the corresponding crystals, i.e. solids having the same stoichiometry, but over an ordered structure. In this article, the possible connection between the thermodynamic and vibrational aspects of glasses and the topological disorder is considered, emphasizing the most significant differences between crystalline and amorphous solids having the same stoichiometry.

Author Biographies

  • Giovanna D'Angelo, Università degli Studi di Messina and Consiglio Nazionale delle Ricerche
    Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra (Contrada Papardo, 98166 Messina, Italy) and Istituto Processi Chimico-Fisici, Sezione di Messina (Viale F. Stagno d’Alcontres 37, I-98158, Messina, Italy)
  • Giuseppe Carini, Università degli Studi di Messina and Consiglio Nazionale delle Ricerche
    Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra (Contrada Papardo, 98166 Messina, Italy) and Istituto Processi Chimico-Fisici, Sezione di Messina (Viale F. Stagno d’Alcontres 37, I-98158, Messina, Italy)

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Published

2020-10-01

Issue

Vol 98, SUPPL NO 1 (2020): Glasses and Polymers 2018

Section

Glasses & Polymers: The Science of Disorder (Conference Proceedings)

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